Pressure and Vacuum Relief Thief Hatch



Pressure and Vacuum Relief Thief Hatch

Data Sheet



Certified test report verifying specified settings and leakage performance
Precision lapped valve seat for low leakage performance of no more than 0.1 SCFH at 90% of the set pressure
Lightweight, non-sparking aluminum cast cover for easy installation, operation and maintenance
High quality 316 S.S. hardware for increased durability
Anodized vacuum pallet for improved corrosion resistance
Oversized step pad allowing for hands-free operation
Wide variety of spring and gasket materials to accommodate many applications


Sizes: 8” API flat face flange
Settings Pressure: 2, 4, 6, 8, 12, 16, 24, 32 oz./sq. in.
Settings Vacuum: 0.4, 0.9, 3.5 oz./sq. in.
Materials: Cover and base flange – non-sparking cast aluminum; Hardware – 316 S. S.


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