Pressure
Testing
Installers should ensure that all non-Hep2O®
products can withstand the test pressure by checking with other relevant
manufacturers. When testing Hep2O pipework
systems, the recommended test pressure is: |
 |
For
Hep2O®
fittings with grab wedges - 1.5 times working pressure. |
|
For
Hep2O®
grab ring and SlimLine fittings - a further test to 18 Bar. |
|
If the system contains ANY grab ring or SlimLine fittings the
further test to a maximum of 18 Bar should always be undertaken. Care
should be taken to disconnect any appliances or fittings that will
not withstand, or will be damaged by testing at 18 Bar. For testing
procedure see below. The duration of the test should be not less than
1 hour in accordance with BS 6700. |
 |
 |
Figure
No. 65
Pressure Testing |
Figure
No. 66
Pressure Testing Kit (HX81) |
|
Pressure Test Procedure: |
|
| 1.
|
Ensure
any non-Hep2O®
components in system will withstand test pressure.
|
| 2.
|
Blank
off all open ends using Hep2O®
Blanking Pegs (HX44) or Blanking Plugs (HX41). |
| 3.
|
Connect
pressure hose to system at a convenient point using a demountable
socket. |
| 4.
|
Close
Valve V2 and open Valve V1. |
| 5. |
Fill
system to be tested with water ensuring system is completely
full of water (purge all air). |
| 6. |
Raise
pressure to test pressure and close Valve V1. |
| 7.
|
At
end of test duration, gently tap gauge with a finger (to ensure
pointer is 'free'). Read pressure on gauge, no appreciable drop
in pressure should be noticed to indicate the system is watertight.
|
| 8.
|
Release
Valve V1 and V2 to release pressure from system. Drain system
if necessary. |
| 9.
|
Replace
cap and components in socket used for connection to test kit. |
|
| Remember!
Pressure Testing is NOT a substitute for making sure
the Correct Insertion Depth of the Tube into the fitting using
either the Chevron marks or a pencil mark has been achieved.
For correct method (see Fig 8).
|
|
