Double backflow assembly failure

This backflow assembly is for the domestic water in a warehouse in Seattle. It’s a Wilkins 375 Reduced Pressure Backflow Assembly.

Unfortunately it failed the annual backflow assembly test, the relief valve failed (low psid) and check valve #2 leaks. We’ll have to repair it when the place is closed.

Update: its 1:00am on 4/19/11 this repair went smoothly and this device passed the backflow assembly test with good readings.