Sanitary Diaphragm Seals, Tri-clamp Diaphragm

Diaphragm Seal

SJ Gauge offers a wide range of diaphragm seal solutions for pressure gauges and pressure transmitters, including single flange, double flange, sanitary type, threaded type, and special diaphragm seals, which can be selected based on different media characteristics and installation requirements.

When the measured media is viscous, paste-like, crystallizing, particle-containing, or highly corrosive, diaphragm seals help protect pressure instruments by reducing the risk of clogging, corrosion, and damage, while improving measurement stability. Common applications include chemical processing, food and beverage, pharmaceutical, wastewater treatment, petrochemical, and various process industries. If you have special operating conditions or customization requirements, please feel free to contact SJ Gauge.

  • Sanitary Diaphragm Seals, Tri-clamp Diaphragm
    Model: DIS-C

    Sanitary Diaphragm Seals, Tri-clamp Diaphragm

    • Clamp connection, easy to clean and mount
    • Used in the food, beverage, pharmaceutical and bio industries
  • Sanitary Diaphragm Seals, DIN Standard
    Model: DIS-DIN

    Sanitary Diaphragm Seals, DIN Standard

    • Flush welded diaphragm seal to assure the best hygiene and quick cleaning
    • Especially designed for sanitary application such as dairy and breweries
  • Sanitary Diaphragm Seals, IDF Standard
    Model: DIS-IDF

    Sanitary Diaphragm Seals, IDF Standard

    • Clamp connections are fast and easy to open for cleaning and seal replacement​​​
    • Grooved union nut and thread coupling can be selected
    • Suitable for Sterilization in Place (SIP) and Clean in Place (CIP)
  • Sanitary Diaphragm Seals, SMS Standard
    Model: DIS-SMS

    Sanitary Diaphragm Seals, SMS Standard

    • Applications for measuring viscous, powdery and clotting hydraulic fluid
    • Quick mounting and dismounting, easy to clean from the outside without residue
  • Threaded Connection, Screwed
    Model: DIT-S

    Threaded Connection, Screwed

    • Suitable for measuring corrosive or crystalline media
    • The diaphragm can be removed for cleaning when blocked with fluid
    • Mostly used in chemical processing and pharmaceutical industries
  • Threaded Connection, Welded
    Model: DIT-W

    Threaded Connection, Welded

    • Fully welded design, without additional sealing
    • For hot, hazardous or toxic media
    • Mostly used in oil, gas and petrochemical industries
  • Threaded Connection, High Pressure
    Model: DIT-H

    Threaded Connection, High Pressure

    • Recommended for high pressure application
    • For corrosive, viscous or sewage media measurement
    • Ideal for petrochemical, wastewater technology etc.
  • Threaded Connection with Corrosion-resistant Plastic
    Model: DIT-P

    Threaded Connection with Corrosion-resistant Plastic

    • Made of PTFE/PP to resist strong acids and alkalis effectively
    • Separates media from the gauge to prevent internal component damage
    • Ideal for viscous or particle-rich fluids, ensuring accurate pressure readings
  • Threaded Connection, Upper Metal, Lower Plastic
    Model: DIT-USLP

    Threaded Connection, Upper Metal, Lower Plastic

    • A metal upper body that connects to the instrument is tight and durable
    • Large selection of top housings and process connections
    • Ideal for processing corrosive fluids or other environmentally harmful medium
  • Threaded Connection, Flush Diaphragm
    Model: DIT-FS

    Threaded Connection, Flush Diaphragm

    • Threaded connection design for easy installment
    • Ideal for application with high pressure and limited space
    • Can be used in heavy industries such as mining, tunnel digging, etc.
  • Threaded Connection, Intergrated PP
    Model: DIT-PP

    Threaded Connection, Intergrated PP

    • Polypropylene has excellent anti-corrosion properties
    • One-piece molded, rarely cracks or leaks
    • Mainly used in printing circuit boards, liquid filter pumps, etc.
  • Threaded Connection, Bottom PP
    Model: DIT-PPS

    Threaded Connection, Bottom PP

    • Could be integrated with a pointer, digital manometer or transmitter
    • Suitable for measuring acidic fluids, which are compatible with Viton
    • Suitable for circuit board equipment, the petrochemical industry, etc.
  • Threaded Connection, Hexagonal
    Model: DIT-6

    Threaded Connection, Hexagonal

    • Detachable design for easy cleaning and maintenance
    • Often used in cement plants and the petrochemical equipment industry
  • Flanged Connection
    Model: DIF

    Flanged Connection

    • Screw type or welding type can be selected according to size requirements
    • Used for sewage or fluids with difficult properties such as corrosive, high temperature, or crystallization
    • Applicable for strict working environments including pharmaceuticals, chemical and petrochemical processing, etc.
  • Flanged Connection with Screwed Diaphragm
    Model: DIF-DSR

    Flanged Connection with Screwed Diaphragm

    • Used for rigid working environments and corrosive fluids like high temperature, sewage, high process pressures, and crystallization
    • Various types and materials for diaphragm seal bodies that fit any kind of gauge upon request
    • The flush port provides easy cleaning/flushing due to process media being prone to clogging
    • Extremely high compatibility replacement for the WIKA 990.12
  • Flanged Connection with Corrosion-resistant Plastic
    Model: DIF-P

    Flanged Connection with Corrosion-resistant Plastic

    • The all-plastic material design is lightweight and can effectively measure acidic and alkaline media
    • Excellent for paint, electroplating, sewage treatment and the paper industry