Reliability Performance Report for Furon® HPVM Valves
April 25th, 2018
Furon HPVM valves, normally closed, were tested for reliability in 49 wt% hydrofluoric acid (HF) by an independent test lab using the protocol of a major US OEM manufacturer.
Accelerated Life Test Method
Eight Furon HPVM 2" valves were assembled in a manifold (valve set A in Figure to the left) allowing two parallel flow paths through each set of 8 valves. Each set was cycled 3 seconds open and 3 seconds closed at room temperature with an actuator pressure of 80 psig. One set was opened as the other set was closed to maintain a constant flow of acid through the system at 76-80 psig. Flow was provided by a double diaphragm pump. Valves were inspected every workday for leaks. The accelerated life test was performed on a set of eight valves in 49% HF. Cleanroom-grade HF was used. The acid was replaced halfway through the test to ensure that full chemical strength was maintained.