Dial Indicating

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100 Series ABS & Steel Case Dry Pressure Gauges

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Accurate and reliable general purpose dry gauge with vacuum & compound ranges, and ABS or Steel case. Ideal for applications including hydraulics, pneumatics, medical, pumps, compressors, refrigeration controls and more.

Multiple connection options are available including panel mount. A wide variety of pressure ranges, scale options, connections sizes, and options including flanges, case options, cover rings, lens materials, pointers, and orifices are also available.

  • General purpose non-fillable dry gauge
  • Vacuum and compound ranges through 0 psi to 15,000 psi
  • 1", 1-1/2", 2", 2-1/2" and 4" gauge sizes
  • Standard impact-resistant ABS & Steel case
  • Copper alloy and Brass wetted parts

If you are viewing on a smaller screen or with screen zoom, please use the horizontal scroll bar at the bottom of this table to see all information.

GAUGE SIZES 10 1" 20 2" 40 4"    
15 1-1/2" 25 2-1/2"        
CASE TYPES 100 ABS, bottom connection 120 Steel case panel mount        
110 ABS, back connection 148 Square ABS, panel mount (2" only)      
PRESSURE
RANGES
30vac -30 inHg to 0 psi 30/300 -30 inHg to 0 to 300 psi 200 0 psi to 200 psi 2000 0 psi to 2,000 psi
30/15 -30 inHg to 0 to 15 psi 15 0 psi to 15 psi 300 0 psi to 300 psi 3000 0 psi to 3,000 psi
30/30 -30 inHg to 0 to 30 psi 30 0 psi to 30 psi 400 0 psi to 400 psi 5000 0 psi to 5,000 psi
30/60 -30 inHg to 0 to 60 psi 60 0 psi to 60 psi 600 0 psi to 600 psi 6000 0 psi to 6,000 psi
30/100 -30 inHg to 0 to 100 psi 100 0 psi to 100 psi 1000 0 psi to 1,000 psi 10000 0 psi to 10,000 psi
30/160 -30 inHg to 0 to 160 psi 160 0 psi to 160 psi 1500 0 psi to 1,500 psi 15000 0 psi to 15,000 psi
30/200 -30 inHg to 0 to 200 psi Other ranges available on request      
SCALE OPTIONS*** psi psi single scale psi/kPa psi/kPa dual scale psi/kg/cm2 psi/kg/cm2 dual scale psi/bar psi/bar dual scale
CONNECTION
SIZES
1/8 1/8" NPT SST SAE J1926-3:7/16-20 Adjustable   1/4 1/4" NPT
OPTIONS PMC Panel Mount Clamp SSC Stainless Steel Case LL Polycarbonate Lens ST Stainless Steel Tagging
SSB Polished Stainless Steel Bezel CRC Chrome Case GL Glass Lens* CPO Brass Sintered Orifice 20 Micron
BLRF Black Rear Flange FAC Flat Sided ABS Case SG Safety Glass Lens* BP1 Brass Press Fit Orifice 0.1 mm
BLFF Black Front Flange – ABS Case BCR Black Cover Ring** HL Homalite Lens* BP3 Brass Press Fit Orifice 0.3 mm
CFF Chrome Front Flange – ABS Case SSCR Stainless Steel Cover Ring** SP Red Set Pointer** BP8 Brass Press Fit Orifice 0.8 mm
SBFF Black Front Flange – Steel Case CCR Chrome Cover Ring** MIP Maximum Indicating Pointer  
SCFF Chrome Front Flange – Steel Case PCCR Polished Chrome Cover Ring** SDM Silicone Dampened Movement
BSC Black Steel Case CAR Chrome Adapter Ring* LM Laser Marking    

NOTE: Cleaning for Oxygen Service (O2) is available only for dry or HL filled gauges.

* A steel, stainless or chrome case & cover ring must be additionally ordered when lenses other than acrylic are utilized on all 100 Series models.
** Only 110 Models require a steel, stainless or chrome case & cover ring to be additionally ordered when utilizing a set pointer or cover ring. Please consult factory when a set pointer is to be utilized on a 120 Model.
*** Other ranges available on request

Please consult your local NOSHOK Distributor or NOSHOK, Inc. for availability and delivery information.

NOTES: See Standard Connection Sizes
Shaded portions of this part number example are not required unless a non-standard connection size or an option is needed.

If you are viewing on a smaller screen or with screen zoom, please use the horizontal scroll bar at the bottom of this table to see all information.

  SERIES SPECIFICATIONS
Pressure ranges 100 Series (all) Vacuum and compound ranges through 0 psi to 15,000 psi
Accuracy 10-110 ±4% full scale
15-100, 15-110, 15-120, 20-100, 20-110,
20-120, 20-148, 25-100, 25-110, 25-120
±2.5% full scale
40-100 ±1.6% full scale
Temperature ranges* 10-110 Media 0 °F to 140 °F (-17 °C to 60 °C)
Ambient 32 °F to 140 °F (0 °C to 60 °C)
15-100, 15-110, 15-120, 20-100, 20-110,
20-120, 20-148, 25-100, 25-110, 25-120
Media -4 °F to 140 °F (-20 °C to 60 °C)
Ambient -40 °F to 140 °F (-40 °C to 60 °C)
Measuring elements 100 Series (all) Copper alloy Bourdon tube
Connection 10-110 1/8″ NPT, ABS
15-100, 15-110, 15-120, 20-100, 20-110 1/8″ NPT, Brass
20-148 1/8″ NPT/10-32 Female, Brass
20-100, 20-110, 20-120, 25-100, 25-110,
25-120, 40-100
1/4″ NPT Brass
SAE J1926-3:7/16-20
Case 10-110, 15-100, 15-110, 20-100, 20-110,
20-148, 25-100, 40-100
ABS (Acryl Nitril Butadien Styrol)
15-120, 20-120, 25-120 Black painted steel with chrome triangular bezel and U-clamp
Bezel 15-110, 20-110, 25-110 Built-in bezel, molded as an integral part of the
case for ease of panel mounting.
15-120, 20-120, 25-120 Chrome-plated steel triangular bezel
Lens 100 Series (all) Acrylic
Pointer 100 Series (all) Molded plastic
Dial 100 Series (all) White background with black primary scale & red secondary scale. UV resistant.
Movement 100 Series (all) Brass & nylon, or all-brass with highly polished
bearing surfaces

* For every 10 ºF (10 ºC) shift in temperature from which the gauge is calibrated, the user can experience up to ±0.4% additional error.

Working Pressure Limitations

Dynamic Pressure 
The working pressure should be limited to 60% of the dial range.

Static Pressure 
The working pressure, where no sharp fluctuations occur, should be limited to 90% of the dial range

Options & Accessories

AVAILABLE

  • Red Set Pointer (SP)
  • 10-32-UNF-2B (10-32)
  • Orifice - Brass Press Fit Sintered, 20 Micron (CPO)
  • Orifice - Brass Press Fit 0.1mm (BP1)
  • Orifice - Brass Press Fit 0.3mm (BP3) - Standard
  • Orifice - Brass Press Fit 0.8mm (BP8)
  • Laser Marking (LM)
  • Stainless Steel Tagging (ST)

CERTIFICATES

  • Certified Calibration (CC)
  • Cleaning for Oxygen Service (O2), Up to 1,000 psi
  • Cleaning for Oxygen Service (O2), 1,500 psi and up

CONSULT FACTORY

  • Black Steel Case (BSC)
  • Chrome Case (CRC)
  • Stainless Steel Case (SSC)
  • Silicone Dampened Movement (SDM)
  • Glass Lens (GL)*
  • Chrome Front Flange (SCFF) Steel Case
  • Black Front Flange (SBFF) Steel Case
  • Black Cover Ring (BCR)
  • Stainless Steel Cover Ring (SSCR)
  • Chrome Cover Ring (CCR)

* A Steel, Stainless or Chrome Case & Cover Ring must be additionally ordered when Lenses other than acrylic are utilized on all 100 Series Models

Prop 65

WARNING:This product can expose you to chemicals including Lead and Nickel, which are known to the State of California to cause cancer and birth defects or other reproductive harm. For more information go to www.P65Warnings.ca.gov

  • Certificate of Cleaning (COCL)
  • Certificate of Conformance (COC)

AVAILABLE

  • Black Steel Case (BSC)
  • Chrome Case (CRC)
  • Flat Sided ABS Case (FAC)
  • Stainless Steel Case (SSC)
  • Black Front Flange (BLFF) ABS Case
  • Chrome Front Flange (CFF) ABS Case
  • Black Cover Ring (BCR)**
  • Stainless Steel Cover Ring (SSCR)**
  • Chrome Cover Ring (CCR)**
  • Polished Stainless Steel Bezel (SSB)
  • Chrome Adaptor Ring (AR)
  • Panel Mount Clamp (PMC)
  • 10-32-UNF-2B (10-32)
  • Orifice - Brass Press Fit Sintered, 20 Micron (CPO)
  • Orifice - Brass Press Fit 0.1mm (BP1)
  • Orifice - Brass Press Fit 0.3mm (BP3) - Standard
  • Orifice - Brass Press Fit 0.8mm (BP8)
  • Laser Marking (LM)
  • Stainless Steel Tagging (ST)

CERTIFICATES

  • Certified Calibration (CC)
  • Cleaning for Oxygen Service (O2), Up to 1,000 psi
  • Cleaning for Oxygen Service (O2), 1,500 psi and up

CONSULT FACTORY

  • Silicone Dampened Movement (SDM)
  • Glass Lens (GL) - Consult Factory for Availability and Minimum Quantity*
  • Red Set Pointer (SP)**
  • Chrome Front Flange (SCFF) Steel Case
  • Black Front Flange (SBFF) Steel Case

* A Steel, Stainless or Chrome Case & Cover Ring must be additionally ordered when Lenses other than acrylic are utilized on all 100 Series Models

** Requires a Steel, Stainless or Chrome Case & Cover Ring to be additionally ordered when utilizing a Set Pointer or Cover Ring.

Prop 65

WARNING:This product can expose you to chemicals including Lead and Nickel, which are known to the State of California to cause cancer and birth defects or other reproductive harm. For more information go to www.P65Warnings.ca.gov

  • Certificate of Cleaning (COCL)
  • Certificate of Conformance (COC)

AVAILABLE

  • Black Steel Case (BSC) - Standard
  • Glass Lens (GL)*
  • Homalite Lens (HL)*
  • Polished Stainless Steel Bezel (SSB) - Standard
  • Chrome Adaptor Ring (AR)
  • Panel Mount Clamp (PMC)
  • 10-32-UNF-2B (10-32)
  • Orifice - Brass Press Fit Sintered, 20 Micron (CPO)
  • Orifice - Brass Press Fit 0.1mm (BP1)
  • Orifice - Brass Press Fit 0.3mm (BP3) - Standard
  • Orifice - Brass Press Fit 0.8mm (BP8)
  • Laser Marking (LM)
  • Stainless Steel Tagging (ST)

CERTIFICATES

  • Certified Calibration (CC)
  • Cleaning for Oxygen Service (O2), Up to 1,000 psi
  • Cleaning for Oxygen Service (O2), 1,500 psi and up

CONSULT FACTORY

  • Silicone Dampened Movement (SDM)
  • Red Set Pointer (SP)

* A Steel, Stainless or Chrome Case & Cover Ring must be additionally ordered when Lenses other than acrylic are utilized on all 100 Series Models

Prop 65

WARNING:This product can expose you to chemicals including Lead and Nickel, which are known to the State of California to cause cancer and birth defects or other reproductive harm. For more information go to www.P65Warnings.ca.gov

  • Panel Mount Clamp (15-110-PMC)
  • Certificate of Cleaning (COCL)
  • Certificate of Conformance (COC)

AVAILABLE

  • 10-32-UNF-2B (10-32)
  • Orifice - Brass Press Fit Sintered, 20 Micron (CPO)
  • Orifice - Brass Press Fit 0.1mm (BP1)
  • Orifice - Brass Press Fit 0.3mm (BP3) - Standard
  • Orifice - Brass Press Fit 0.8mm (BP8)
  • Laser Marking (LM)
  • Stainless Steel Tagging (ST)

CERTIFICATES

  • Certified Calibration (CC)
  • Cleaning for Oxygen Service (O2), Up to 1,000 psi
  • Cleaning for Oxygen Service (O2), 1,500 psi and up

CONSULT FACTORY

  • Black Steel Case (BSC)
  • Chrome Case (CRC)
  • Stainless Steel Case (SSC)
  • Silicone Dampened Movement (SDM)
  • Glass Lens (GL)*
  • Red Set Pointer (SP)
  • Chrome Front Flange (SCFF) Steel Case
  • Black Front Flange (SBFF) Steel Case
  • Black Cover Ring (BCR)**
  • Stainless Steel Cover Ring (SSCR)
  • Chrome Cover Ring (CCR)

* A Steel, Stainless or Chrome Case & Cover Ring must be additionally ordered when Lenses other than acrylic are utilized on all 100 Series Models

Prop 65

WARNING:This product can expose you to chemicals including Lead and Nickel, which are known to the State of California to cause cancer and birth defects or other reproductive harm. For more information go to www.P65Warnings.ca.gov

  • Certificate of Cleaning (COCL)
  • Certificate of Conformance (COC)

AVAILABLE

  • Flat Sided ABS Case (FAC)
  • Red Set Pointer (SP)**
  • Black Front Flange (BLFF) ABS Case
  • Chrome Front Flange (CFF) ABS Case
  • Polished Stainless Steel Bezel (SSB)
  • Chrome Adaptor Ring (AR)
  • Panel Mount Clamp (PMC)
  • 10-32-UNF-2B (10-32)
  • Orifice - Brass Press Fit Sintered,­ Micron (CPO)
  • Orifice - Brass Press Fit 0.1mm (BP1)
  • Orifice - Brass Press Fit 0.3mm (BP3) - Standard
  • Orifice - Brass Press Fit 0.8mm (BP8)
  • Laser Marking (LM)
  • Stainless Steel Tagging (ST)

CERTIFICATES

  • Certified Calibration (CC)
  • Cleaning for Oxygen Service (O2), Up to 1,000 psi
  • Cleaning for Oxygen Service (O2), 1,500 psi and up

CONSULT FACTORY

  • Black Steel Case (BSC)
  • Chrome Case (CRC)
  • Stainless Steel Case (SSC)
  • Silicone Dampened Movement (SDM)
  • Glass Lens (GL) - Consult Factory for Availability and Minimum Quantity*
  • Chrome Front Flange (SCFF) Steel Case
  • Black Front Flange (SBFF) Steel Case
  • Black Cover Ring (BCR)**
  • Stainless Steel Cover Ring (SSCR)**
  • Chrome Cover Ring (CCR)**

* A Steel, Stainless or Chrome Case & Cover Ring must be additionally ordered when Lenses other than acrylic are utilized on all 100 Series Models

** Requires a Steel, Stainless or Chrome Case & Cover Ring to be additionally ordered when utilizing a Set Pointer or Cover Ring.

Prop 65

WARNING:This product can expose you to chemicals including Lead and Nickel, which are known to the State of California to cause cancer and birth defects or other reproductive harm. For more information go to www.P65Warnings.ca.gov

  • Panel Mount Clamp (20-110-PMC)
  • Certificate of Cleaning (COCL)
  • Certificate of Conformance (COC)

AVAILABLE

  • Black Steel Case (BSC) - Standard
  • Glass Lens (GL)*
  • Homalite Lens (HL)*
  • Polished Stainless Steel Bezel (SSB) - Standard
  • Chrome Adaptor Ring (AR)
  • Panel Mount Clamp (PMC) - Standard
  • 10-32-UNF-2B (10-32)
  • Orifice - Brass Press Fit Sintered, 20 Micron (CPO)
  • Orifice - Brass Press Fit 0.1mm (BP1)
  • Orifice - Brass Press Fit 0.3mm (BP3) - Standard
  • Orifice - Brass Press Fit 0.8mm (BP8)
  • Laser Marking (LM)
  • Stainless Steel Tagging (ST)

CERTIFICATES

  • Certified Calibration (CC)
  • Cleaning for Oxygen Service (O2), Up to 1,000 psi
  • Cleaning for Oxygen Service (O2), 1,500 psi and up

CONSULT FACTORY

  • Silicone Dampened Movement (SDM)
  • Red Set Pointer (SP)

* A Steel, Stainless or Chrome Case & Cover Ring must be additionally ordered when Lenses other than acrylic are utilized on all 100 Series Models

Prop 65

WARNING:This product can expose you to chemicals including Lead and Nickel, which are known to the State of California to cause cancer and birth defects or other reproductive harm. For more information go to www.P65Warnings.ca.gov

  • Certificate of Cleaning (COCL)
  • Certificate of Conformance (COC)

AVAILABLE

  • Red Set Pointer (SP)
  • 10-32-UNF-2B (10-32) - Standard
  • Laser Marking (LM)
  • Stainless Steel Tagging (ST)

CERTIFICATES

  • Certified Calibration (CC)
  • Cleaning for Oxygen Service (O2), Up to 1,000 psi
  • Cleaning for Oxygen Service (O2), 1,500 psi and up

CONSULT FACTORY

  • Silicone Dampened Movement (SDM)

Prop 65

WARNING:This product can expose you to chemicals including Lead and Nickel, which are known to the State of California to cause cancer and birth defects or other reproductive harm. For more information go to www.P65Warnings.ca.gov

  • Certificate of Cleaning (COCL)
  • Certificate of Conformance (COC)

AVAILABLE

  • Black Steel Case (BSC)
  • Chrome Case (CRC)
  • Stainless Steel Case (SSC)
  • Polycarbonate Lens (LL)*
  • Red Set Pointer (SP)
  • Safety Glass Lens (SG)*
  • Chrome Front Flange (SCFF) Steel Case
  • Black Front Flange (SBFF) Steel Case
  • Black Rear Flange (BLRF)
  • Black Cover Ring (BCR)
  • Stainless Steel Cover Ring (SSCR)
  • Rubber Case Protectors (RCP)
  • 10-32-UNF-2B (10-32)
  • Orifice - Brass Press Fit Sintered, 20 Micron (CPO)
  • Orifice - Brass Press Fit 0.1mm (BP1)
  • Orifice - Brass Press Fit 0.3mm (BP3) - Standard
  • Orifice - Brass Press Fit 0.8mm (BP8)
  • Laser Marking (LM)
  • Stainless Steel Tagging (ST)

CERTIFICATES

  • Certified Calibration (CC)
  • Cleaning for Oxygen Service (O2), Up to 1,000 psi
  • Cleaning for Oxygen Service (O2), 1,500 psi and up

CONSULT FACTORY

  • Silicone Dampened Movement (SDM)
  • Glass Lens (GL) - Consult Factory for Availability and Minimum Quantity*
  • Maximum Indicating Pointer (MIP)

* A Steel, Stainless or Chrome Case & Cover Ring must be additionally ordered when Lenses other than acrylic are utilized on all 100 Series Models

Prop 65

WARNING:This product can expose you to chemicals including Lead and Nickel, which are known to the State of California to cause cancer and birth defects or other reproductive harm. For more information go to www.P65Warnings.ca.gov

  • Chrome Adapter Ring (25-13-1-CHROME-AR)
  • Rubber Case Protector (25-123459-0-RCP)
  • Certificate of Cleaning (COCL)
  • Certificate of Conformance (COC)

AVAILABLE

  • Black Steel Case (BSC)
  • Chrome Case (CRC)
  • Flat Sided ABS Case (FAC)
  • Stainless Steel Case (SSC)
  • Polycarbonate Lens (LL)*
  • Red Set Pointer (SP)**
  • Safety Glass Lens (SG)*
  • Black Front Flange (BLFF) ABS Case
  • Chrome Front Flange (CFF) ABS Case
  • Chrome Front Flange (SCFF) Steel Case
  • Black Front Flange (SBFF) Steel Case
  • Black Cover Ring (BCR)**
  • Stainless Steel Cover Ring (SSCR)**
  • Polished Stainless Steel Bezel (SSB)
  • Chrome Adaptor Ring (AR)
  • Panel Mount Clamp (PMC)
  • Rubber Case Protectors (RCP)
  • 10-32-UNF-2B (10-32)
  • Orifice - Brass Press Fit Sintered, 20 Micron (CPO)
  • Orifice - Brass Press Fit 0.1mm (BP1)
  • Orifice - Brass Press Fit 0.3mm (BP3) - Standard
  • Orifice - Brass Press Fit 0.8mm (BP8)
  • Laser Marking (LM)
  • Stainless Steel Tagging (ST)

CERTIFICATES

  • Certified Calibration (CC)
  • Cleaning for Oxygen Service (O2), Up to 1,000 psi
  • Cleaning for Oxygen Service (O2), 1,500 psi and up

CONSULT FACTORY

  • Silicone Dampened Movement (SDM)
  • Glass Lens (GL) - Consult Factory for Availability and Minimum Quantity*
  • Maximum Indicating Pointer (MIP)

* A Steel, Stainless or Chrome Case & Cover Ring must be additionally ordered when Lenses other than acrylic are utilized on all 100 Series Models

** Requires a Steel, Stainless or Chrome Case & Cover Ring to be additionally ordered when utilizing a Set Pointer or Cover Ring.

Prop 65

WARNING:This product can expose you to chemicals including Lead and Nickel, which are known to the State of California to cause cancer and birth defects or other reproductive harm. For more information go to www.P65Warnings.ca.gov

  • Panel Mount Clamp (25-110-PMC)
  • Chrome Adapter Ring (25-13-1-CHROME-AR)
  • Certificate of Cleaning (COCL)
  • Certificate of Conformance (COC)

AVAILABLE

  • Black Steel Case (BSC) - Standard
  • Glass Lens (GL)*
  • Homalite Lens (HL)*
  • Polished Stainless Steel Bezel (SSB) - Standard
  • Chrome Adaptor Ring (AR)
  • Panel Mount Clamp (PMC) - Standard
  • 10-32-UNF-2B (10-32)
  • Orifice - Brass Press Fit Sintered, 20 Micron (CPO)
  • Orifice - Brass Press Fit 0.1mm (BP1)
  • Orifice - Brass Press Fit 0.3mm (BP3) - Standard
  • Orifice - Brass Press Fit 0.8mm (BP8)
  • Laser Marking (LM)
  • Stainless Steel Tagging (ST)

CERTIFICATES

  • Certified Calibration (CC)
  • Cleaning for Oxygen Service (O2), Up to 1,000 psi
  • Cleaning for Oxygen Service (O2), 1,500 psi and up

CONSULT FACTORY

  • Silicone Dampened Movement (SDM)
  • Red Set Pointer (SP)

* A Steel, Stainless or Chrome Case & Cover Ring must be additionally ordered when Lenses other than acrylic are utilized on all 100 Series Models

Prop 65

WARNING:This product can expose you to chemicals including Lead and Nickel, which are known to the State of California to cause cancer and birth defects or other reproductive harm. For more information go to www.P65Warnings.ca.gov

  • Chrome Adapter Ring (25-13-1-CHROME-AR)
  • Certificate of Cleaning (COCL)
  • Certificate of Conformance (COC)

AVAILABLE

  • Black Steel Case (BSC)
  • Safety Glass Lens (SG)*
  • Chrome Front Flange (SCFF) Steel Case
  • Black Front Flange (SBFF) Steel Case
  • Black Rear Flange (BLRF)
  • Black Cover Ring (BCR)
  • Chrome Cover Ring (CCR)
  • Rubber Case Protectors (RCP)
  • 10-32-UNF-2B (10-32)
  • Orifice - Brass Press Fit Sintered, 20 Micron (CPO)
  • Orifice - Brass Press Fit 0.1mm (BP1)
  • Orifice - Brass Press Fit 0.3mm (BP3) - Standard
  • Orifice - Brass Press Fit 0.8mm (BP8)
  • Laser Marking (LM)
  • Stainless Steel Tagging (ST)

CERTIFICATES

  • Certified Calibration (CC)
  • Cleaning for Oxygen Service (O2), Up to 1,000 psi
  • Cleaning for Oxygen Service (O2), 1,500 psi and up

CONSULT FACTORY

  • Silicone Dampened Movement (SDM)
  • Glass Lens (GL) - Consult Factory for Availability and Minimum Quantity*

* A Steel, Stainless or Chrome Case & Cover Ring must be additionally ordered when Lenses other than acrylic are utilized on all 100 Series Models

Prop 65

WARNING:This product can expose you to chemicals including Lead and Nickel, which are known to the State of California to cause cancer and birth defects or other reproductive harm. For more information go to www.P65Warnings.ca.gov

  • Rubber Case Protector (40-123459-BLACK-RCP)
  • Certificate of Cleaning (COCL)
  • Certificate of Conformance (COC)

NOSHOK offers multiple assembly options to meet your specific system requirements. Consult factory to discuss your customized solution.

NOSHOK offers a wide variety of standard & elevated pressure, and reduced pressure replaceable and non-replaceable diaphragm seals, designed to isolate and/or protect the pressure measuring instrument from corrosive, viscous, contaminated or very high temperature process media.

View NOSHOK's Diaphragm Seal offering

NOSHOK's Distribution Manifolds connect multiple instruments to one diaphragm seal, eliminating multiple connections that lead to possible leak paths.

View NOSHOK Distribution Manifolds

  • Resist clogging and are self-cleaning
  • Five different sized pistons included with each snubber to ensure the correct amount of snubbing for virtually every application
  • Available in Brass and 316 Stainless Steel in 1/4" NPT, 1/2" NPT or SAE J1926-3: 7/16-20
  • Weight approximately 0.2 lb. for 1/4" & 7/16", and approximately 0.4 lb. for 1/2"​​​​​​

Specifications

WARNING: This product can expose you to chemicals including Lead, which is known to the State of California to cause cancer and birth defects or other reproductive harm. For more information go to www.P65Warnings.ca.gov


WARNING: This product can expose you to chemicals including Nickel, which is known to the State of California to cause cancer and birth defects or other reproductive harm. For more information go to www.P65Warnings.ca.gov

  • Cost effective solution to protect expensive instrumentation
  • Increases gauge readability by smoothing out pressure surges, pulsations and spikes
  • 5 basic elements available for each snubber to accommodate specific application needs
  • Snubbing action achieved by utilizing a corrosion resistant 316 Stainless Steel sintered porous element
  • Exotic materials or intermediate disc grades available
  • Provides long service life with no moving parts to wear out
  • Weight approximately 0.2 lb. for 1/4" & 7/16", and approximately 0.4 lb. for 1/2

Specifications

Dimensions

Replacement Disc Options

WARNING: This product can expose you to chemicals including Lead, which is known to the State of California to cause cancer and birth defects or other reproductive harm. For more information go to www.P65Warnings.ca.gov


WARNING: This product can expose you to chemicals including Nickel, which is known to the State of California to cause cancer and birth defects or other reproductive harm. For more information go to www.P65Warnings.ca.gov

  • Protect the instrument from the damaging effects of high temperature steam
  • Recommended for use in all steam applications
  • Available in 1/4" and 1/2" NPT sizes in welded steel, welded 316 Stainless Steel or seamless 316 Stainless Steel with ratings to 3,800 psi @ 850 ºF

Specifications

Dimensions

Steam Syphons Temperature 1/4" NPT vs. Pressure charts

Steam Syphons Temperature 1/2" NPT vs. Pressure charts

WARNING: This product can expose you to chemicals including Lead, which is known to the State of California to cause cancer and birth defects or other reproductive harm. For more information go to www.P65Warnings.ca.gov


WARNING: This product can expose you to chemicals including Nickel, which is known to the State of California to cause cancer and birth defects or other reproductive harm. For more information go to www.P65Warnings.ca.gov

  • Temperature ratings: 15,000 psi @ 200 °F and 3,000 psi @ 1,000 °F
  • Used with gauges and gauge valves to adjust the line of sight
  • Rotates 360° to allow the connected instrument to be positioned in the desired direction
  • The pressure connection is achieved with a tapered cone style compression fitting simply by tightening the swivel hex nut
  • All 316 Stainless Steel construction
  • Standard with 1/2" NPT male process – 1/2" NPT female instrument connections
  • Also available with 1/4" NPT connections, same specifications apply
  • Weight approximately 0.8 lb.

Swivel Adaptor Dimensions


WARNING: This product can expose you to chemicals including Nickel, which is known to the State of California to cause cancer and birth defects or other reproductive harm. For more information go to www.P65Warnings.ca.gov

WARNING:This product can expose you to chemicals including Lead and Nickel, which are known to the State of California to cause cancer and birth defects or other reproductive harm. For more information go to www.P65Warnings.ca.gov

Pressure Gauges

Frequently Asked Questions

A: A fill plug seals the fill hole in a pressure gauge case. On liquid filled pressure gauges, a ventable fill plug is used to relieve internal case pressures that occur due to thermal expansion of the fill fluid. In non-filled dry gauges, a non-ventable fill plug is used to occasionally drain the interior of the case from condensate or relieve internal case pressures. Ventable fill plugs incorporate a vent pin to open and close a hole for relieving internal case pressures and do not have to be removed from the case hole like non-ventable fill plugs.

A: Overpressure ratings are specific to the gauge type, pressure range and accuracy ratings of the gauge. Normal overpressure protection can range from 1.1 times to 1.3 times the full scale pressure depending on the gauge selected. NOSHOK gauges comply to the EN-837-1 and ASME B40.100 standards in regards to overpressure protection. When selecting a pressure gauge, it is recommended that the normal system pressure be maintained around half of the full range of the gauge as to avoid overpressure conditions.

A: A Maximum Indicating Pointer (MIP), also commonly referred to as a Tell Tale Pointer, adds an additional error to the pressure gauge due to the increase load on the bourdon tube. The lower the pressure range, the higher the error. Typically 1%. Consult factory.

A: Certified Calibrations provide the user with a serial numbered gauge along with a calibration certificate that it has been certified in accordance to the pressure gauge standard with instruments that are traceable to NIST with accuracies of at least 4 to 1.

A: A Certificate of Conformance is a formal statement on company letterhead stating that an instrument complies with a particular standard and/or specification. It contains the signatures of the required personnel. These Certificates are often needed to show industry inspectors that a system and its components are in compliance.

A: NOSHOK pressure gauges require little or no calibration within the Warranty period. Some applications may be more aggressive than others, resulting in an increased frequency in the need for calibration. The environmental limitations for the pressure gauge series should be observed in all cases. Gauges used in situations outside these requirements may result in inaccuracies, premature wear and/or failure of the gauge and would require additional maintenance. The frequency of calibration, therefore, is best left to the user to determine.

A: Orifices are a type of snubber. On pressure systems that have rapidly increasing or decreasing pressure spikes, orifices lessen the effects of these energy pulses by blocking the wave energy using restricted flow. They are recommended in dynamic pressure applications with mild pressure spikes.

A: A diaphragm is used to isolate and protect the instrument from the process media. Damaging process media may include corrosives, particulates, temperatures, or any state that is not suitable for direct contact with the measuring element. Diaphragms indirectly transmit system pressures by segregating the process pressure with a thin flexible membrane that in turn transfers the pressure through a fill fluid to the instrument. Diaphragms are often used in conjunction with capillaries to further distance the instrument from the process media. Capillary tubes transmit the diaphragm fill fluid to the instrument. Capillary tubes come in several lengths and provide the user a means to measure in a remote location and may also act as heat dissipaters in high temperature applications.

A: Primarily, in applications that have vibrations or pulsations, liquid filling enables reading the dial pointer by dampening the movement. Liquid filling should be considered in any system that has high dynamic operating conditions. In general, liquid filling helps extend the life of a gauge. It reduces damaging resonance induced fracturing, reduces frictional wear, prevents aggressive ambient air from entering, prevents condensation formation, and improves reliability.

A: Temperature changes affect the stiffness of a bourdon tube. The stiffness change is produced by a combination of changes in the elastic (Young's) modulus and a change in linear dimensions due to linear expansion and contraction. The error caused by temperature change will follow the approximate formula: ± 0.04 x (t2 ñ t) % of of the span.

A: The pressure range of a gauge should be a minimum of 10 percent over the maximum working pressure in static conditions with no pressure fluctuations. In dynamic conditions, the gauge range should be a minimum of 40 percent over the maximum working pressure. Ideally, the pressure gauge range should be selected for a midscale reading during normal operating pressures.

A: Accuracy is the difference between the true value and the gauge indication expressed as a percent of the gauge span. It is determined by comparing a gauge indication to a known standard or certified true value and combines the effects of method, observer, apparatus, and environment. Accuracy error also includes hysteresis and repeatability errors. An ASME B40.1 class B gauge has three accuracies. For example, a 3-2-3 percent of span designation stands for 3 percent in the first quarter of the scale, 2 percent in the middle half of the scale and 3 percent in the upper quarter of the scale.

A: Lens materials include Instrument Glass, Laminated Safety Glass, Tempered Glass, and plastic. Glass lenses are used for abrasion, chemical and wear resistant properties. Laminated safety glass reduces the possibility of shattering if the bourdon tube ruptures. Tempered glass is 2 to 5 times stronger than plain glass. Plastic lenses are used for impact, corrosion and chemical resistance. Special attention should be paid to the temperature and corrosive environments. Polycarbonate is selected for its superior impact resistance, acrylic for its clarity and scratch resistance and Homalite for its superior chemical resistance. In general, gauges with plastic lenses should remain below 140 degrees Fahrenheit.

A: Pigtail syphons should be used in steam applications and systems that contain superheated vapor. The pigtail buffers the instrument from the damaging effects of high temperature steam by holding system fluid in the coil to provide a steam trap for the fluid to condensate and dissipate the heat.

A: Cleaning for Oxygen (O2) service is performed on gauges that are used on oxygen service or oxidizing media applications. The cleaning removes all hydrocarbons, such as oil and grease, that can react violently, resulting in explosions, fire, and injury to personnel and property. Gauges cleaned for Oxygen service can be used in any application that requires the cleanliness level associated with oxygen cleaned gauges. Glycerin filled gauges cannot be used on oxygen systems or on other oxidizing media.

A: Glycerin is the most common fill fluid. Because of its unique fluid properties, Glycerin has become the standard for liquid filled gauges. Glycerin's clarity, viscosity, stability, cost, solubility and low toxicity make it an ideal fluid for many applications. Mineral oils and silicone fluids are used when temperature extremes, chemical compatibility or viscosity fall outside of Glycerin use. Halocarbon is an inert fluid that is compatible with chlorine, oxygen service and some high temperature applications. Glycerin is not compatible with strong oxidizers such as oxygen, chlorine, hydrogen peroxide or nitric acid. Glycerin and silicone are explosive in contact with chlorine. Halocarbon is explosive in contact with aluminum and magnesium.

A: The ASME B40.100 (formerly ASME B40.1) and EN 837-1 are both standards for pressure gauges, but they serve different regions and regulatory frameworks. ASME B40.100 is the U.S. standard for dial-type, elastic-element pressure gauges, providing guidelines for design, accuracy, performance, and testing. Primarily used in North America, it includes similar technical requirements to EN 837-1 within a mandatory appendix. EN 837-1, on the other hand, is the European standard specifically for Bourdon tube pressure gauges, enforcing strict requirements for dimensions, metrology, and testing to ensure compliance within the European Union. While both standards cover similar aspects of pressure gauge design and performance, EN 837-1 is a regulatory requirement for products sold in Europe, often necessary for CE marking, whereas ASME B40.100 serves as an industry guideline aligned with ANSI-approved U.S. standards.

A: Throttle devices limit the flow to the pressure instrument. They are a type of snubber.

A: The tip motion of a bourdon tube is translated to rotary motion of a pointer by a linkage and sector gear acting on the pointer pinion gear. Stop pins limit the movement of the bourdon tube, sector or pointer rotation in over and under pressure conditions that would otherwise move the pointer pinion off the sector gear and damage the gauge.

More questions? Contact NOSHOK Customer Support at info@noshok.com

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