Dixon Valve Pneumatic Test Pump Manual - Manual (Page 4)

4 Pneumatic Test Pump Dixon Valve & Coupling 800.355.1991
Procedure for Hydrostatic Testing using Pneumatic Test Pump (PTP)
It is important to know the parameters of the test being conducted. Follow
the hose manufacturer, recommendations of Rubber Manufacturers Association
(R.M.A.), OSHA, or other regulatory bodies guidelines for specific test parameters.
The test should be carefully monitored and all results recorded. Dixon recommends
the following sequence for a successful test:
1. Determine the test pressure of the assembly to be tested.
2. Make sure that the test caps or test plugs and all connections are tight on the test
sample.
3. Connect the air supply line, the water supply line and the intermediate hose to
the test pump.
4. Connect one end of the test sample to the intermediate hose. The connection
between test sample and intermediate hose should be tight.
5. Connect the bleed-off valve to the other end of the test sample.
6. Open the bleed-off valve on the test sample.
7. Close the pressure relief valve (see 1 on drawing) on the pump.
8. Open the water inlet valve (see 2 on drawing) on the pump.
9. Fill test sample with water. Vent all air from test sample by keeping the bleed-
off valve elevated until a solid stream of water (no bubbles) is coming out of the
bleed-off valve.
Warning!
Do not turn off water supply once test sample has been filled with water
10. Turn air regulator knob (see 3 on drawing) counterclockwise to fully closed posi-
tion.
11. Turn on the air supply valve (see 4 on drawing).
12. Turn the air regulator knob (see 3 on drawing) clockwise until desired test pres-
sure is shown on the liquid filled pressure gauge (see 5 on drawing).
13. Hold test pressure until test duration requirement is met.