Air Products
Catalog
Pressure Protection Valves With Internal Check Valve

Can be used to direct fill system reservoirs because of the built in check valve.

Piping Diagrams
Used to protect the air brake system in case of failure of an attached device. The built in check valve allows direct filling of system reservoirs from the supply line.


Always install with vent port downward.
Part Number Inlet Port (NPT) Outlet Port (NPT) Nominal Closing Repair Kit Notes
140200 3/8" 3/8" 50 PSI 140201  
140270 3/8" 3/8" 60 PSI 140271  
140280 3/8" 3/8" 70 PSI 140281  
140290 3/8" 3/8" 80 PSI 140291  
140300 1/4" 1/4" 50 PSI 140201  
140370 1/4" 1/4" 60 PSI 140271  
140380 1/4" 1/4" 70 PSI 140281  
140390 1/4" 1/4" 80 PSI 140291  
140680 3/8" 1/4" 70 PSI 140281 Replaces 140580

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