Spring Loaded
ModelA21H-16/25/40/64/100-C; A21W-16/25/40/64/100-P/R; A21F-16/25/40-C/P/R
A21H-16/25/40/64/100-C; A21W-16/25/40/64/100-P/R; A21F-16/25/40-C/P/R
Product Overview
A21H type are used for the equipment and pipelines with such media as air, ammonia and petroleum at a working temperature less than 200°C. A21W type are used for the equipment and pipelines containing corrosive gases or liquids at a working temperature less than 200°C. A21F type are used for the equipment and pipelines of liquefied gas and petroleum gas at a working temperature less than 80°C. They function as an overpressure protection device.
Model | Sealing Material | Body Material | Media |
|---|---|---|---|
A21H | Alloy Steel | WCB, ZG230-450 | Air, ammonia and petroleum gas |
A21W |
Body Material (Integral Seat) |
ZG1Cr18Ni9Ti ZG1Cr18Ni12Mo2Ti | Corrosive gases or liquids |
A21F | Fluoroplastics |
WCB, ZG230-450 ZG1Cr18Ni9Ti ZG1Cr18Ni12Mo2Ti | Liquefied gas and petroleum gas |
Technical Data
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Product Datasheet
Model-specific nominal diameters, thread specifications and corresponding dimensions.
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Operating Context
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