General Instrument products are made with fine precision, latest automation, and by qualified professionals. They are tested and certified as per industry standards' organizations. Our products are pre-approved on most large company procurements world-wide.


Sandwich Type Diaphragm Seal


Sandwich type Diaphragm Seals are the most commonly used Diaphragm Seals. The Diaphragm is sandwiched between Top Chamber & Bottom Chamber / Flange. These are available Threaded as well as Flanged process Connection. For low Pressure Range & Smaller Flange Sizes, “I” section type Diaphragm Seals are used. 


• Visual Inspection

• Dimensional Verification

• Accuracy Test

• Hysteresis Test

• Leak Test

• Influence Of Mounting Position

• Degree of Protection

• Effect of Mechanical Vibration


•  Effect of Mechanical Shock

•  Endurance Test With Steady Pressure

•  Endurance Test With Over Pressure

•  Endurance Test with Cyclic Pressure

•  Safety Blow-out Test

•  Thermal Stability Test at Rated

•  Temperature effect Test

•  Energy release Test 


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