Installation Guide

7
Customer Service [phone]
backflow.apollovalves.com
ES1602 REV A.
BFMMRP4ASBF
V. TESTING PROCEDURES
NOTE: This is a 3 valve test kit procedure and may or may not be approved in all jurisdictions. Consult your local water purveyor for acceptable test procedures.
TEST SETUP
1. Notify customer water will be o; inspect device for leaks, verify the make, model, and serial number.
2. Flush test cocks, in order (4-1-2-3), (open #2 test cock very slowly to prevent accidental opening of the relief valve), then install appropriate
adapters (if necessary)
3. Close valves “A”, “B”, & “C” on test kit and close the #2 shut-o valve.
4. Connect high side hose to test cock #2, and low hose to test cock #3.
5. Slowly open test cock #3, then open vent “C” valve and low “B” valve. This will bleed air from low side of gauge. Slowly open test cock #2, then
open high “A” valve. This will bleed air from high side of gauge. Close valve “A”, then valve “B”, then valve “C”.
6. Observe this apparent dierential pressure for check valve #1; this value must be at least 5.0 psi or greater.
TEST NO. 1
PURPOSE: TO TEST CHECK VALVE #2 AGAINST BACK PRESSURE.
1. Connect the vent “C” hose to test cock #4.
2. Slowly open the high “A” and vent “C” valves and keep the low “B” closed.
3. Open test cock #4.
4. Gauge may decrease slightly due to disc compression. If pressure dierential continues to decrease until the vent opens, then check valve #2 is
reported as leaking.
TEST NO. 2
PURPOSE: TO TEST SHUT-OFF VALVE #2 FOR TIGHTNESS.
1. After passing test No. 1, continue to test No. 2 by closing test cock #2.
2. The indicated pressure dierential will decrease slightly. If pressure dierential continues to decrease (approaching zero) the
3. No. 2 shut-o valve is reported to be leaking.
TEST NO. 3
PURPOSE: TO TEST CHECK VALVE #1 FOR TIGHTNESS.
1. Close high “A” valve and open test cock #2.
2. Close test cock #4.
3. Open low valve “B”, this will bleed air from low side of gauge, then closing valve “B” restores the system to a normal static condition.
4. Observe the pressure dierential gauge; this value must be a least 5.0 psi or greater. Record this value for check valve #1 on the backflow test
report form.
TEST NO. 4
PURPOSE: TO TEST OPERATION OF THE DIFFERENTIAL PRESSURE RELIEF VALVE.
1. The Pressure Dierential Relief Valve must operate to maintain the “zone” between the two check valves at least 2 psi less than supply pressure.
2. Close vent “C” valve.
3. Open the high “A” valve.
4. Slowly open the low “B” valve no more than one turn.
5. Hold the valve at this position and observe the gauge reading at the first moment the first discharge is noted from the relief valve.
6. Record this as the opening dierential pressure of the relief valve on the test report form.
TEST NO. 5
PURPOSE: TO DO A DIFFERENTIAL PRESSURE TEST ON CHECK VALVE #2.
1. After completing test No. 4, close test cock #2, then close test cock #3.
2. Close valves “A”, “B”, and “C” on test kit.
3. Move low hose “B” to test cock #4, then move high hose “A” to test cock #3.
4. Slowly open test cock #4, then open vent “C” valve and low “B” valve. This will bleed air from low side of gauge.
5. Slowly open test cock #3, then open high “A” valve. This will bleed air from high side of gauge.
6. Close valve “A”, then “B”, then “C”.
7. Observe the pressure dierential gauge, this value must be at least 1.0 psi or greater.
8. Record this value for check valve #2 on the backflow test report form.
END OF TESTING
1. Make sure all test cocks are closed. Remove hoses and fittings. Slowly open shut-o valve #2 to restore water supply to the customer.