Diaphragm Seals

Kodiak Controls offers a wide variety of diaphragm seals including flow through, flush, industrial, mini, & sanitary to prevent damage to pressure gauges. Sort by connection type, ranges, and fitting type to match your needed application.

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    Plast-O-Matic GGS Diaphragm Seal

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    Item Type Style Connection Wetted Material
    Industrial Clamped Threaded Plastic

    Plast-O-Matic® series GGS gauge guards should be used to isolate and protect pressure or vacuum instruments used on ultra-pure or highly corrosive fluid lines. They can be confidently used with liquids such as de-mineralized water, sulphuric acid, hydrochloric acid, and caustics. Utilization of Plast-O-Matic gauge guards offers the added advantage of protection against clogging of instruments caused by suspended solids or highly viscous fluids. Plast-O-Matic gauge guards are available with or without gauges.

  • noshok5seal_large

    Noshok 5 Diaphragm Seal

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    Item Type Style Connection Wetted Material
    Industrial Clamped Threaded Plastic

    Noshok® series 5 plastic diaphragm seals are constructed from corrosion-resistant PP glass fiber reinforced upper housing and PP, PVC, or PVDF lower housing. They are used for wastewater and chemical feed applications, as well as most applications with a corrosive media which includes deionized water systems, reverse osmosis systems, desalinization systems, and electroplating.

  • plastomaticggmuseal_large

    Plast-O-Matic GGMU Diaphragm Seal

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    Item Type Style Connection Wetted Material
    Flow Through Clamped Threaded Plastic

    Plast-O-Matic® series GGMU gauge guards are designed for ultra-pure liquid systems and to eliminate piping dead-leg that can harbor bacterial growth or other contamination. This is in addition to their basic function of keeping system liquid from coming in contact with a pressure (vacuum) gauge or other pressure instrument while still maintaining the accuracy of the gauge or instrument.

  • kodiakdsm35_large

    Kodiak DSM35 Diaphragm Seal

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    Item Type Style Connection Wetted Material
    Mini Welded Threaded Metallic

    Kodiak’s series DSM35 mini diaphragm seals are designed for gauges 1.5″ to 3.5″ in size and are also acceptable for pressure transducer/transmitters or other small displacement instruments. They feature an all welded design, a standard pressure rating of 2500psi with 5000psi available, and a female threaded standard process connection with a male threaded connection available.

  • kodiak_large_seal_large

    Kodiak DS Diaphragm Seal

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    Item Type Style Connection Wetted Material
    Industrial Capsule, Welded Threaded, Flanged Metallic

    Kodiak’s series DS large diaphragm seals are used in applications where medias may corrode or clog pressure instruments by themselves. The diaphragm is welded to the upper housing or available as a replaceable diaphragm gasketed between the upper & lower housing.

  • kodiakdsm45_large

    Kodiak DSM45 Diaphragm Seal

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    Item Type Style Connection Wetted Material
    Mini Welded Threaded Metallic

    Kodiak’s series DSM45 mini diaphragm seals are designed for gauges 1.5″ to 6″ in size and are also acceptable for pressure transducer/transmitters or other small displacement instruments. They feature an all welded design, a standard pressure rating of 2500psi with 5000psi available, and a female threaded standard process connection with a male threaded connection available.

  • ashcroft-106

    Ashcroft 106-206 In-Line Flanged Diaphragm Seals

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    Item Type Style Connection Wetted Material
    Flow Through, Industrial Welded 1/4 NPT, 1/2 NPT, Flanged, Other Metallic, Stainless Steel

    The Ashcroft® 106 and 206 in-line flanged diaphragm seals or isolation devices protect pressure measuring instruments. Mounted in-line to the process piping, they are used on applications where continuous flow prevents process clogging or accumulation, while preventing process fluid loss in the event the measuring instrument is removed or fails. An ideal choice for satisfying challenging installation requirements.

  • ashcroft200seal_large

    Ashcroft 200 Diaphragm Seal

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    Item Type Style Connection Wetted Material
    Flow Through, Industrial Welded Threaded, Flanged, Saddle Weld Metallic, Plastic

    Ashcroft® series 200 and 201 large diaphragm seals protect pressure measuring instruments. A metal diaphragm is welded to the top housing. Elastomeric diaphragms are bonded to the top housing. Either provides a double positive seal. They are commonly used for elevated process temperatures, corrosive service, isolation of the process for safety, suspended solids in the process, sanitary connections, replacement of process dead leg, and to ease cleaning between batches.

  • ashcroft310seal_large

    Ashcroft 310 Diaphragm Seal

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    Item Type Style Connection Wetted Material
    Mini Welded Threaded Metallic

    Ashcroft® series 310 and 315 mini diaphragm seals protect pressure measuring instruments. Used to ensure process compatibility, they are also applied when process media exhibits high temperature, pulsation, and the potential for plugging or freeze-up. They are commonly used in oil & gas, chemical & petrochemical, engineered systems, and heavy vehicles. They are ideal where corrosion protection and limited spacing are essential.

  • ashcroft-702-703

    Ashcroft 702-703 Flanged High Displacement Diaphragm Seals

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    Item Type Style Connection Wetted Material
    Industrial Welded 1/4 NPT, 1/2 NPT, Threaded, Flanged Metallic, Monel, Stainless Steel

    The Ashcroft® 702 and 703 high-displacement diaphragm seals or isolation devices are used with low pressure or differential pressure gauges with low differential pressure and elevated static pressure. Used to ensure material compatibility, they are also applied when process media exhibits high temperature, pulsation or the potential to clog an instrument connection. An ideal product for satisfying low pressure measurement needs.