Threaded Connection, Flush Diaphragm

Pressure Instruments

SJ Gauge specializes in a wide range of professional pressure measurement instruments, including digital pressure gauges, differential pressure gauges, stainless steel mechanical gauges, and pressure transmitters. Our products are manufactured under strict quality control standards and are designed to meet diverse industrial and scientific applications. With a comprehensive product portfolio and reliable after-sales service, we ensure long-term performance and peace of mind for our customers.

We offer flexible customization services tailored to your specific requirements. From pressure gauges to transmitters, each product can be engineered to match your exact application needs. Whether for large-scale industrial procurement or low-volume customized orders without minimum quantity limitations, SJ Gauge provides fast response and efficient solutions. We understand the complexity of different operating environments and are committed to transforming your requirements into precise and reliable measurement solutions. For any customization inquiries, please feel free to contact us.

  • 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
  • Flanged Connection, Upper Metal, Lower Plastic
    Model: DIF-USLP

    Flanged Connection, Upper Metal, Lower Plastic

    • A metal upper body that connects to the instrument is tight and durable
    • Plastic lower body can protect pressure instruments from corrosive, contaminated or viscous media
    • Suitable for paint, electroplating, sewage treatment and the paper industry
  • Flanged Connection with Dual Diaphragm
    Model: DIF-S

    Flanged Connection with Dual Diaphragm

    • Lower pressure ranges can be measured to meet pipeline connection needs and accuracy
    • An alternative when flange diaphragm seal – “I” section type cannot be used due to lack of space
    • Applicable for strict working environments including biogas, oil, gas fracking and biodiesel, etc
  • Flanged Connection with Flush Diaphragm
    Model: DIF-F

    Flanged Connection with Flush Diaphragm

    • One-piece seal design bolts directly to process flange
    • Flush-mounted diaphragm prevents clogging of process media
    • Used in applications with difficult media such as machine building and automation
  • Flanged Connection with Extended Diaphragm
    Model: DIF-E

    Flanged Connection with Extended Diaphragm

    • Upper body of the diaphragm seal, the extended diaphragm and the wetted parts can be made of identical or different materials
    • As an alternative, the diaphragm and the extended diaphragm can be coated
    • Used for contaminated, solidifying, hot or highly viscous media such as thick walled or isolated tanks and pipelines
  • Flanged Connection, Cell (Pancake) Diaphragm
    Model: DIF-C

    Flanged Connection, Cell (Pancake) Diaphragm

    • Instruments are connected via a side capillary connection and it is an ideal seal for transmitters or DP transmitters
    • Be mounted between an open process flange and an optional cover flange
    • Used for contaminated, solidifying, hot, or highly viscous media
    • An alternative with high compatibility and corresponding specifications to the WIKA 990.28
  • Flanged Connection with Stub Pipe, Screwed Diaphragm
    Model: DIFF-S

    Flanged Connection with Stub Pipe, Screwed Diaphragm

    • By using diaphragm seals, the measuring instruments can be used at extreme temperatures up to +300 °C
    • The double flange diaphragm can increase the size of the upper body and diaphragm to match the piping connection, requirements, and improve accuracy
    • Applicable to special working environments and corrosive fluids, such as high pressure, high vibration, and concrete
  • Flanged Connection with Stub Pipe, Welded Diaphragm
    Model: DIFF-W

    Flanged Connection with Stub Pipe, Welded Diaphragm

    • Optimizable through the adjustment of the upper seat and diaphragm sizes for precision and to meet the criteria for pipeline connections
    • The short pipe length on the lower body can be manufactured to match the piping’s thermal-insulation requirements.
    • Durability for working environments using liquids that are high temperature, corrosive, sewage, or prone to crystallization
  • Flanged Connection with Stub Pipe, Corrosion-resistant Plastic
    Model: DIFF-P

    Flanged Connection with Stub Pipe, Corrosion-resistant Plastic

    • Upper seat and diaphragm can be enlarged to ensure precision and compliance with pipeline connection standards
    • Applicable for media that are corrosive, viscous, powdery, harmful or toxic to the environment
    • Ideal for industries such as petrochemical, chemical equipment construction, sewage treatment, paper, etc.
  • Flanged Connection with Stub Pipe, Upper Metal, Lower Plastic
    Model: DIFF-USLP

    Flanged Connection with Stub Pipe, Upper Metal, Lower Plastic

    • Enlarged upper seat and diaphragm to enhance accuracy and meet the requirements for pipeline connections
    • The material of diaphragm or dual diaphragm can be different from the main body
    • Ideal for industries such as electroplating, chemical and petrochemical processing, etc.