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Type 40 Flow-Through Annular Style, Replaceable Diaphragm Seals

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Application Brochures
Water/
Wastewater
  • Process liquid flowing through the pipe exerts pressure onto a flush-mounted flexible inner cylinder containing clean, captive liquid; completely isolating instrumentation from the process flow and preventing plugging
  • Can be used for remote mounting of pressure instrument(s) with capillary, see options & accessories below
  • Instrumentation can be removed for calibration, repair or replacement without interrupting the process flow
  • Integral design prevents accidental breakage
  • Can be used with a variety of process conditions in many applications
  • Eliminates clogging typically associated with diaphragm seals used in viscous fluid applications which can lead to inaccurate pressure readings
  • Assembly flanges ASME B16.1 Class 150, 2" to 10"

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TYPE 40 Annular Ring 40BT Bolt-Through Annular Ring        
INSTRUMENT CONNECTION SIZES 02 1/4" NPT 04 1/2" NPT        
UPPER HOUSING MATERIALS C Carbon steel S 316 Stainless steel        
DIAPHRAGM MATERIALS B NBR V FKM T PTFE E EPDM
PIPE SIZES 16 2" Pipe 32 4" Pipe 48 6" Pipe 80 10" Pipe
24 3" Pipe 40 5" Pipe 64 8" Pipe    
FLANGE MATERIALS C Carbon steel S 316 Stainless steel        

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PRODUCT SPECIFICATIONS
Seal type Inline flanged with sleeve diaphragm
Instruments Type Size Minimum Pressure Maximum Pressure
Gauges 2-1/2" to 6" 0 psig to 30 psig 0 psig to 285 psig
Transducers 0 psig to 30 psig 0 psig to 285 psig
Switches 0 psig to 30 psig 0 psig to 285 psig
Upper housing Type Non-continuous duty
Connections 1/4" NPT, 1/2" NPT
Materials Polyurethane enamel coated steel, 316 Stainless steel
Diaphragm Size Sleeve style per ring size
Materials NBR, FKM, EPDM, PTFE (Other materials available on request)
Flange Materials Connections Flanged, Class 150, 2" through 10"
  Materials Polyurethane enamel coated steel, 316 Stainless steel
Bolting   Zinc-plated steel, optional stainless steel
Operating temperature   -30 °F to 140 °F, based on materials of construction and fill fluid

Options & Accessories

  • 1/4" NPT X 1/4" NPT Cooling Element (1/4" NPT X 1/4" NPT-CE)
  • 1/2" NPT X 1/2" NPT Cooling Element (1/2" NPT X 1/2" NPT-CE)
  • Works in combination with diaphragm seal to isolate instrument from high media temperatures
  • Recommended for process temperatures above 212 °F
  • Requires direct mounted system
  • Effective temperature reductions of 200 °F depending upon ambient conditions
  • High >212 °F process temperature, low < -40 °F process temperature
  • All Stainless Steel construction

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

  • Glycerin (GY) *
  • Silicone (SL)
  • Halocarbon® (HL)
  • Neobee M20 (NB)
  • Mineral Oil (MO)
  • Propylene Glycol (PG)

* Not recommended for use in vacuum applications.

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

View NOSHOK Distribution Manifolds

  • 5 ft. SS Armored Flexible Capillary, 1/4" NPT (AC-02-02-5) per ft. adder (AC-02-02-#)
  • 5 ft. SS Armored Flexible Capillary, 1/2" NPT (AC-04-04-5) per ft. adder (AC-04-04-#)
  • Stainless Steel capillaries available with or without Stainless Steel armor
  • Protects the instrument from high or low process temperatures
  • Allows remote mounting of pressure instrument(s)
  • Select the shortest capillary length possible, as changes in ambient temperature conditions may significantly affect the accuracy and response time of the instrument
  • Standard length 5', others available
  • Installation on analog gauges requires a gauge support and gauge adaptor, or other surface mounting provisions
  • Any level difference between the instrument and the seal will result in a pressure indication error; make sure to compensate for the level difference during calibration of the diaphragm seal assembly if the level difference is known
  • Filling options for capillaries
    • Silicone - specify to 10 or 20 feet (SL-C)
    • Halocarbon® - specify to 10 or 20 feet (HL-C)

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

For NOSHOK Diaphragm Seals with Carbon Steel lower housing materials:

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


For NOSHOK Diaphragm Seals with Stainless Steel lower housing materials:

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