Most Fuji Ring Compressors should not be operated in a “dead-head” condition. These relief valves are designed to protect the blowers from overheating when operating dead-headed. The valves are preset to provide the proper protection for the appropriate model, which is approximately 90% of the dead-head pressure level, and is adjustable to a lower setting.
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Pressure Relief Valves

Pressure Relief Valves for Ring Compressor Blowers
Pressure Relief Valves

Pressure Relief Valves for Ring Compressor Blowers
Pressure Relief Valves

Pressure Relief Valves for Ring Compressor Blowers
Pressure Relief Valves

Pressure Relief Valves for Ring Compressor Blowers
Pressure Relief Valves

Pressure Relief Valves for Ring Compressor Blowers
For Use With Blower Model N/A VFC30 N/A VFC40 N/A VFC50 N/A VFC60 N/A VFC70
Factory Setting (“H2O") N/A 42 N/A 46 N/A 68 N/A 100 N/A 98
Thread Size N/A 1 1/2" MPT N/A 1 1/2" MPT N/A 1 1/2" MPT N/A 2" MPT N/A 2" MPT
Manufacturer N/A Fuji Electric