MID-WEST’S model 835 is a 0-15 psig differential pressure gauge equipped with 5 valves : 1 high pressure valve, 1 low pressure valve, 1 by-pass valve, 1 high pressure bleed valve and 1 low pressure bleed valve. Both bleeding valves are located on the top of the device, making it easier for the tester to operate.
The test kit also comes in a rigid plastic box with 3 hoses and all the necessary adapters needed to connect the hoses to any size backflow preventer’s test cocks. The 835 can also be easily unclipped from the box.