Diaphragm Seals

  • Standard Features:

    • Standard Pressure Rating with Metal Lower Housing 1/4 inches through 1 inch
    • All Pipe Schedules per ASME/ANSI B36.10 or B36.19
    • Maximum Working Pressure Conforms to Pipe Schedule Ratings as calculated by ASME/ANSI B31.1 Equation "4" @ 100 ºF (38ºC)
    Download Datasheet
  • Standard Features:

    • Standard Pressure Rating with Metal Lower 1/4 inches through 1 inch
    • All Pipe Schedules per ASME/ANSI B36.10 or B36.19
    • Maximum Working Pressure Conforms to Pipe Schedule Ratings as calculated by ASME/ANSI B31.1 Equation "4" @ 100 ºF (38ºC)
    Download Datasheet
  • Standard Features:

    • Standard Pressure Rating with Metal Lower Housing
    • Process Connection Sizes 1/4 " NPTF through 1 1/2" NPTF
    • Maximum Pressure Rating 1250, 2500 PSIG (8.63, 17.25Mpa) @ 100ºF (38ºC)
    Download Datasheet
  • Standard Features:

    • 2" (50.80mm) and Larger
    • Process Connection Sizes 2" through 3" ASME/ANSI  Flange Rating up to 2500lb
    • Maximum Working Pressure Conforms to Flange Pressure-Temperature Ratings  per ASME/ANSI B16.5
    • Flange Faces (125-250Ra Spiral Finish is standard)
    • Raised Face , Flat Face , Ring Type Joint and Special Flange Faces are available
    Download Datasheet
  • Standard Features:

    • Standard Pressure Rating with Metal Lower Housing
    • Process Connection Sizes 1/4 " NPTF through 1 1/2" NPTF
    • Maximum Pressure Rating 750, 1500 PSIG (5,18,10.35Mpa) @ 100ºF (38ºC)
    Download Datasheet
  • Standard Features:

    • 2" (50.80mm) and larger
    • Process Connection Sizes 2" and 3"
    • Maximum Working Pressure Conforms to Flange Pressure-Temperature Ratings per ASME/ANSI B16.5
    • Flange Faces (125-250Ra Spiral Finish is standard)
    • Raised Face , Flat Face , Ring Type Joint and Special Flange Faces are available
    Download Datasheet
  • Standard Features:

    • Instrument Connection Sizes 1/4"  NPTF OR 1/2" NPTF
    • Maximum Working Pressure Determined by Piping System Clamp Rating
    Download Datasheet
  • D74 2-PIECE INDUSTRIAL SEAL

    • Two piece construction and designed to withstand even the most severe process applications
    • “Continuous use” seals – backing plate will prevent diaphragm from rupturing if pressure sensing instrument fails. Pressure will be held until instrument is replaced
    • Diaphragm is separable for servicing and is available with a 1/4” NPT flushing connection for removing any material which may clog the process connection
    • Standard diaphragm is constructed of AISI 316 stainless steel and welded to the upper chamber of the seal
    • ASME B40.100 compliant
    • 5 year warranty
    Where the media is low in pressure and the process fluid is corrosive or viscous and would clog instrument internals/solidify within the pressure gauge, switch or transmitter
  • noshoklogforproductpage TYPE 10 STANDARD/ 10H ELEVATED PRESSURE BOLTED REPLACEABLE DIAPHRAGM SEALS NOSHOK STANDARD PRESSURE BOLTED REPLACEABLE DIAPHRAGM SEALS are designed to utilize a replaceable diaphragm clamped between the metal housings. They are rated to 2,000 psi with a displacement capability of 3.2 ml. NOSHOK ELEVATED PRESSURE BOLTED REPLACEABLE DIAPHRAGM SEALS are a threaded connection, off-line seal with a replaceable diaphragm. They are designed for high pressure applications and are rated to 5,000 psi. Displacement capability is 1.4 ml.
  • noshoklogforproductpage TYPE 12 SANITARY, CLAMPED-STYLE, ASME-BPE NONREPLACEABLE DIAPHRAGM SEALS NOSHOK SANITARY, CLAMPED-STYLE, ASME-BPE NONREPLACEABLE DIAPHRAGM SEALS feature a flush mount diaphragm and all welded construction, making them ideal for food & beverage, SANITARY, CLAMPED-STYLE, ASME-BPE NONREPLACEABLE DIAPHRAGM SEALS pharmaceutical and sanitary markets. They can accommodate process connection pipes from 1-1/2" through 3" sizes. Their clamped connection allows ease of installation and removal of seal for maintenance and cleaning.
  • noshoklogforproductpage TYPE 25/25H NOSHOK STANDARD PRESSURE NON-REPLACEABLE DIAPHRAGM SEALS utilize an all welded, all metallic housing design, pressure rated to 2,500 psi. The housing and diaphragm are offered in a variety of materials to suit most applications. A flushing port is offered as an option. NOSHOK ELEVATED PRESSURE NON-REPLACEABLE DIAPHRAGM SEALS utilize an all welded, all metallic housing design pressure rated to 5,000 psi. The housing and diaphragm are offered in a variety of materials to suit most applications. A flushing port is offered as an option.
  • noshoklogforproductpage TYPE 29 HIGH VOLUMETRIC DISPLACEMENT NONREPLACEABLE DIAPHRAGM SEALS NOSHOK HIGH VOLUMETRIC DISPLACEMENT NONREPLACEABLE DIAPHRAGM SEALS are an all welded, all metallic housing design that does not utilize an o-ring or gasket. Displacement is limited to 1.5 ml requiring the use of gauges with less than 4-1/2" dial size and Bourdon tube range no lower than 0 psi to 15 psi. Pressure rating is 2,500 psi.

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