Clamp Style with Replaceable Diaphragm

Sanitary

Front Flush

All Welded Miniature

Clamped Style with Welded Diaphragm

ALL

10/10H
Standard & Elevated Pressure Diaphragm Seal

10L
Reduced Pressure Diaphragm Seal

12
Ladish "Tri-Clamp" Sanitary Diaphragm Seal

20
Front Flush Button Style Diaphragm Seal

25/25H
Standard & Elevated Pressure Welded Diaphragm Seal

29
High Displacement All Welded Diaphragm Seal

30/30H
Standard & Elevated Pressure Diaphragm Seal

30L
Reduced Pressure Diaphragm Seal

Type 10/10H

Clamped Style Replaceable Diaphragm

Standard & Elevated Pressure Diaphragm Seal

NOSHOK Type 10L Low Pressure Diaphragm Seals are designed to isolate the pressure measuring instrument from the process media in lower pressure applications requiring a large diaphragm surface area with high displacement capability. The field replaceable diaphragm is available in all metallic or elastomer materials and is clamped between two o-rings and the upper and lower housing creating a leak free union. The upper housing material is available in carbon steel and 316SS while the lower housing is only available in non-metallic materials. The threaded connections are 1/4 inch NPT through 1 1/2 inch NPT sizes. Flushing connections are not available due to the strength of the lower housing material.

The NOSHOK Type 12 Ladish “Tri-Clamp” Sanitary Seal is designed for applications within the food & beverage, pharmaceutical and sanitary market where a flush mount diaphragm and all welded construction are required. The upper housing and wetted parts are constructed of 316SS and fit process connection pipes from 1 1/2 inch through 3 inch sizes. Installation and removal of the seal system is simplified through the use of a connecting clamp, which also determines the maximum pressure rating for the seal. Fluid displacement is determined by the diameter of the diaphragm and the process pipe size that the seal can accommodate.

NOSHOK Type 20 Front Flush Style Diaphragm Seal is designed for applications requiring an NPT male threaded process connection and with a flush diaphragm. The flush diaphragm prevents clogging and process material build-up within a threaded cavity found in typical female NPT seals. The Type 20 isolates the measuring instrument from the process media and is pressure rated to 4300 psi. The housing and diaphragm material are constructed from 316SS for greater strength and durability.

NOSHOK Type 25 and 25H, Standard and Elevated Pressure All Welded Diaphragm Seals are designed to isolate the measuring instrument from the corrosive or viscous process media that may clog the instruments pressure port. The all welded diaphragm and housing materials are offered in various metallic forms to suit most application needs. The standard pressure seal is rated to 2500 psi maximum and elevated pressure models are rated to 5000 psi. Both units have a limited displacement capability of 0.02 cubic inches with a 1.4 inch diameter diaphragm. Due to the displacement constraint this diaphragm seal is generally restricted to gauges with dial sizes of 2 1/2 inches & smaller and pressure ranges no less than 100 psig. A flushing port is an available option, which allows the user to clean the wetted areas and vent the process line without removing the seal.

Type 29

All Welded Miniature High Displacement

High Volumetric Displacement Diaphragm Seal

The NOSHOK Type 29 High Displacement, All Welded Diaphragm Seal is an off-line seal with a threaded connection and all welded, gasketless construction. They are designed with a larger diameter diaphragm for higher displacement capability. They may be used with pressure gauges up to 4 1/2 inches in diameter with pressure ratings from -30″ Hg to 0 psig through -30″ Hg to 2500 psig. These seals are offered in a variety of materials and process connections to suit most application needs. A flushing port is offered as an option to clean the wetted area and prevent process media clogging or vent the process without removing the seal from the line.

Type 30/30H

Clamped Style Welded Diaphragm

Standard & Elevated Pressure Diaphragm Seal

The NOSHOK Type 30 and 30H, Standard and Elevated Pressure Diaphragm Seals utilize an all metallic diaphragm welded to the upper housing to allow field replacement of the lower housing while maintaining continuity of the measuring system. The upper housing is available in carbon steel and 316SS with the lower housing offered in a variety of metallic materials. The threaded process connections are available in 1/4 inch NPT through 1 1/2 inch NPT sizes. The standard maximum pressure rating is 2500 psig with elevated pressure rating to 20000 psi. A flushing connection is available to clean the process media from the diaphragm cavity and allows venting of the process line.

Type 30L

Clamped Style Welded Diaphragm

High Volumetric Displacement Diaphragm Seal

The NOSHOK Type 30L Low Pressure Diaphragm Seal is designed for lower pressure applications and utilizes a larger diameter diaphragm to achieve a high displacement capability. The all metallic diaphragm is welded to the upper housing to allow replacement of the non metallic lower housing, while maintaining continuity of the measuring system. The upper housing is available in carbon steel and 316SS with the lower housing offered in a variety of non metallic materials. The threaded process connections range from 1/4 inch NPT through 1 1/2 inch NPT. The standard pressure rating is 200 psig.