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Instrumentation & Gauges

Diaphragm Seal & Gauge Protector

Diaphragm seals (chemical seals) and gauge protection devices mounted between the process connection and a pressure gauge or transmitter: they separate the measuring element from aggressive, hot, viscous or crystallising media, and limit overpressure. Created 10.10.2026 because 75 such items were spread across three unrelated types.

153models
3manufacturers
10.10.2026last updated
From the library

Typical models.

One well-documented model per manufacturer — with photo, key figures and datasheet details on the model page.

Models

Models in this type.

The best-documented model of each manufacturer first, then the next — 100 of 153 models in Diaphragm Seal & Gauge Protector. Every row links to full specifications, documents and service notes.

AFRISOBack flange stainless steel 304 vibration-ground Swagelok316L VAR High Purity High Pressure Diaphragm Sealed Valve, 0.14 Cv, 1/4 in. TBW, Lever Handle Endress+HauserPMP75-with diaphragm seal AFRISOConnection socket nickel-plated Swagelok316L VAR High Purity High Pressure Diaphragm Sealed Valve, 3/8 in. TBW, Round Handle AFRISODiaphragm seal MD 11 | 33970 Swagelok316L VAR UHP High Flow Diaphragm Sealed Valve, 1/2 in. Female Swagelok VCR Fitting, SC-01 Cleaned, Green Round Handle AFRISODiaphragm seal MD 11 | 33971 Swagelok316L VAR UHP High Flow Diaphragm Sealed Valve, 1/2 in. Rotatable Male Swagelok VCR Fitting, SC-01 Cleaned, NC Actuator AFRISODiaphragm seal MD 11 | 33972 Swagelok316L VAR UHP High Flow Diaphragm Sealed Valve, 1/2 x 0.049 in. TBW, SC-01 Cleaned, NC Actuator AFRISODiaphragm seal MD 11 | 33973 Swagelok316L VAR UHP High Flow Diaphragm Sealed Valve, 1/4 in. Female Swagelok HVCR Fitting, SC-01 Cleaned, NC Actuator AFRISODiaphragm seal MD 11 | 33974 Swagelok316L VIM-VAR UHP 2-Port Diaphragm Sealed Valve, 1/4 in. TBW, SC-01 Cleaned, NC Actuator AFRISODiaphragm seal MD 11 | 33975 Swagelok316L VIM-VAR UHP 3-Port Diaphragm Sealed Valve, C Flow Path, 1/4 in. TBW, SC-01 Cleaned, NC Actuator AFRISODiaphragm seal MD 30 | 31331W Swagelok316L VIM-VAR UHP Diaphragm Sealed 2-Valve 3-Port Monoblock, 1V Path, 1/4 in. Female VCR Fitting, SC-01 Cleaned, NC Acts. AFRISODiaphragm seal MD 30 | 31332W Swagelok316L VIM-VAR UHP Diaphragm Sealed 2-Valve 3-Port Monoblock, 2V Path, 1/4 in. Female VCR Fitting, SC-01 Cleaned, NC Acts. AFRISODiaphragm seal MD 30 | 31417W Swagelok316L VIM-VAR UHP Diaphragm Sealed Valve, 1/4 in. Female VCR Fitting, SC-01 Cleaned, Green Directional Handle AFRISODiaphragm seal MD 40 | 31347W Swagelok316L VIM-VAR UHP Diaphragm Sealed Valve, 1/4 in. Female VCR Fitting, SC-11 Cleaned, NC Actuator AFRISODiaphragm seal MD 56 BioControl® D25 | 31410W Swagelok316L VIM-VAR UHP Diaphragm Sealed Valve, 1/4 in. Integral Male VCR Fitting, SC-01 Cleaned, Blue Toggle AFRISODiaphragm seal MD 56 BioControl® D50 | 31411W Swagelok316L VIM-VAR UHP Diaphragm Sealed Valve, 1/4 in. Male VCR Fitting, SC-01 Cleaned, Blue Directional Handle AFRISODiaphragm seal MD 56 BioControl® D65 | 31412W Swagelok316L VIM-VAR UHP Diaphragm Sealed Valve, 1/4 in. Rotatable Male VCR Fitting, SC-01 Cleaned, Blue Directional Handle AFRISODiaphragm seal MD 56 BioControl® D80 | 31413W Swagelok316L VIM-VAR UHP Diaphragm Sealed Valve, 1/4 in. Swagelok Tube Fitting, NC Actuator AFRISODiaphragm seal MD 60 | 31324W Swagelok316L VIM-VAR UHP Diaphragm Sealed Valve, 1/4 in. Swagelok Tube Fitting, NO Actuator AFRISODiaphragm seal MD 60 | 31325W Swagelok316L VIM-VAR UHP Diaphragm Sealed Valve, 1/4 in. TBW, SC-01 Cleaned, Blue Directional Handle AFRISODiaphragm seal MD 60 | 31326W Swagelok316L VIM-VAR UHP Diaphragm Sealed Valve, 1/4 in. TBW, SC-01 Cleaned, NC Actuator AFRISODiaphragm seal MD 60 | 31912W Swagelok316L VIM-VAR UHP Diaphragm Sealed Valve, 6 mm Swagelok Tube Fitting, Blue Directional Handle AFRISODiaphragm seal MD 60 | 31914W Swagelok316L VIM-VAR UHP Diaphragm Sealed Valve, 6 mm Swagelok Tube Fitting, NC Actuator AFRISODiaphragm seal MD 63 | 31340W Swagelok316L VIM-VAR UHP High Flow 3-Port Diaphragm Sealed Valve, 1/4 in. Rotatable Male VCR x Female VCR x Female VCR, NC AFRISODiaphragm seal MD 63 | 31341W Swagelok316L VIM-VAR UHP High Pressure Diaphragm Sealed Valve, 1/4 in. Female VCR Fitting, SC-01 Cleaned, White Directional Hndl AFRISODiaphragm seal MD 81 | 31917W Swagelok316L VIM-VAR UHP High Pressure Diaphragm Sealed Valve, 1/4 in. Integral Male VCR Fitting, SC-01 Cleaned, NC Actuator AFRISODiaphragm seal MD 81 | 31921W Swagelok316L VIM-VAR UHP High Pressure Diaphragm Sealed Valve, 1/4 in. Male Swagelok VCR Fitting, SC-01 Cleaned, NC Actuator AFRISODiaphragm seal MD 81 | 31924W Swagelok316L VIM-VAR UHP High Pressure Diaphragm Sealed Valve, 1/4 in. Male VCR Fitting, SC-01 Cleaned, White Directional Handle AFRISODiaphragm seal MD 81 | 31929W Swagelok316L VIM-VAR UHP High Pressure Diaphragm Sealed Valve, 1/4 in. Swagelok Tube Fitting, NC AFRISODiaphragm seal MD 81 | 31931W Swagelok316L VIM-VAR UHP High Pressure Diaphragm Sealed Valve, 1/4 in. TBW, SC-01 Cleaned, White Directional Handle AFRISODiaphragm seal MD 81 | 31938W Swagelok316L VIM-VAR UHP High Pressure Diaphragm Sealed Valve, 6 mm Swagelok Tube Fitting, NC AFRISOHousing stainless steel 304 polished KP Swagelok316L VIM-VAR UHP Modular Surface Mount 2-Port Diaphragm Sealed Valve, SC-01 Cleaned, NC Actuator AFRISOMD 56 SwagelokDiaphragm-Sealed Valves — Multi-Valve Manifolds — Diaphragm Sealed AFRISONG 100 clamp fixing SwagelokStainless Steel High Purity High Pressure Angle-Pattern Diaphragm Sealed Valve, 1/4 in. MNPT x 1/4 in. FNPT, Round Handle AFRISOOverpressure safety device adjustable, vacuum-tight | 63131 SwagelokStainless Steel High Purity High Pressure Diaphragm Sealed Valve, 1/4 in. Female Swagelok VCR Fitting, Round Handle AFRISOOverpressure safety device adjustable, vacuum-tight | 63132 SwagelokStainless Steel High Purity High Pressure Diaphragm Sealed Valve, 3/8 in. Swagelok Tube Fitting, Round Handle AFRISOOverpressure safety device adjustable, vacuum-tight | 63133 SwagelokStainless Steel High Purity High Pressure Diaphragm Sealed Valve, 8 mm Swagelok Tube Fitting, Lever Handle AFRISOOverpressure safety device adjustable, vacuum-tight | 63134 AFRISOOverpressure safety device adjustable, vacuum-tight | 63135 AFRISOOverpressure safety device adjustable, vacuum-tight | 63136 AFRISOOverpressure safety device adjustable, vacuum-tight | 63139 AFRISOOverpressure safety device adjustable, vacuum-tight | 63140 AFRISOOverpressure safety device adjustable, vacuum-tight | 63141 AFRISOOverpressure safety device adjustable, vacuum-tight | 63142 AFRISOOverpressure safety device adjustable, vacuum-tight | 63143 AFRISOOverpressure safety device adjustable, vacuum-tight | 63144 AFRISOOverpressure safety device, brass AFRISOOverpressure safety device, stainless steel 316 Ti AFRISOPiston type diaphragm seal KD 21 | 31420W AFRISOPiston type diaphragm seal KD 21 | 31421W AFRISOPiston type diaphragm seal KD 21 | 31422W AFRISOPiston type diaphragm seal KD 21 | 31423W AFRISOPiston type diaphragm seal KD 21 | 31424W AFRISOPiston type diaphragm seal KD 21 | 31425W AFRISOPiston type diaphragm seal KD 21 | 31426W AFRISOPiston type diaphragm seal KD 21 | 31427W AFRISOPiston type diaphragm seal KD 21 | 31428W AFRISOPiston type diaphragm seal KD 21 | 31429W AFRISOPressure gauge dual stop valve DIN 16272 design A AFRISOPressure gauge dual stop valve DIN 16272 design B AFRISOPressure gauge push-button stop cock AFRISOPressure gauge push-button stop cock | 63031 AFRISOPressure gauge push-button stop cock | 63191 AFRISOPressure gauge push-button stop cock | 63193 AFRISOPressure gauge push-button stop cock | 63235 AFRISOPressure gauge shut-off cock female x female
By manufacturer

Manufacturers.

All 3 manufacturers with models of Diaphragm Seal & Gauge Protector. Names with a manufacturer page open it; the others open a search across the full library.

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Related types

Also in Instrumentation & Gauges.

The other equipment types in this category.

Bourdon Tube Pressure GaugeCalibration EquipmentCapsule Pressure GaugeDiaphragm (Plate Spring) Pressure GaugeDifferential Pressure GaugeElectrical Measuring TransducerFlow MeterFlow SwitchHumidity / Temperature TransmitterInclinometer / Inclination SensorIndustrial ThermometerLiquid Analysis Sensor / TransmitterMechanical Level IndicatorPanel Meter / Electrical IndicatorPosition & Limit SwitchPosition Transmitter / EncoderPressure GaugePressure SwitchPressure Transmitter / TransducerProcess Indicator / Field DisplayRPM / Speed SensorSignal Converter / IsolatorTemperature / Process ControllerTemperature Switch
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