Flanged Diaphragm Seal

Flange Type Diaphragm Seals are pressure isolation devices designed to protect pressure instruments from corrosive, viscous, high-temperature, or hazardous process media. These seals are directly mounted between process flanges and instruments, using a flexible diaphragm that transmits pressure through a fill fluid while preventing direct contact between the process fluid and the sensing element. This ensures accurate measurement, eliminates clogging, and enhances instrument life in demanding applications.

Manufactured from high-quality materials such as SS 316, SS 316L, Hastelloy, Monel, or PTFE-lined constructions, flange type diaphragm seals are ideal for heavy-duty industrial applications. Their robust flanged design provides strong mechanical connection, excellent sealing, and suitability for high-pressure and high-temperature services. They are widely used in chemical, oil & gas, power, and process industries where threaded connections are not preferred.

Technical Details:

• Product Type: Flange Type Diaphragm Seal
• Material: SS 316 / SS 316L / Hastelloy / Monel / PTFE Lined
• Connection Type: Flanged (RF / RTJ / FF)
• Flange Standard: ANSI / ASME / DIN / JIS
• Size Range: 1 to 6 (or larger as required)
• Pressure Class: Class 150 to 2500
• Diaphragm Type: Flush / Extended / Welded
• Fill Fluid: Silicone Oil / Glycerin / Fluorinated Fluid
• Temperature Range: -40C to 300C (higher with cooling accessories)
• Mounting: Direct Mount / Capillary Type