Andrew McKay wrote in message . ..
On 5 Aug 2003 15:27:17 -0700, (John
Stumbles) wrote:

No, Speedfit (and Hep2O etc) are fine when used correctly at mains
pressure. From my own enquiries to JG they say "We recommend testing
central heating pipework 2 bar for 10 minutes and 10 bar for 10 minutes" and
mains is typically around 4 bar.

Stupid question time I guess - how do you go about introducing extra
pressure to a water mains in order to carry out this testing?

The recommended method for testing pipe work, and the method outlined
in the Water Regulations (and BS6700) is to use a hydraulic test pump.
These are available at plumbers' merchants, but are expensive to buy.
Test pumps can also be hired by the day from hire shop such as HSS.

The practical requirements for testing a Hep2O are he -

http://www.hep20.co.uk/v2Otesting1.cfm

The test methods (there are two alternatives for plastics systems) for
Water Regulations testing are in para. 12 he -

http://www.hmso.gov.uk/si/si1999/99114802.htm

In normal circumstances a test to 1.5 times working pressure will
suffice. Working pressure is usually defined as normal incoming mains
pressure after any pressure reducing valve that may be fitted.

The Hepworth Plumbing Products Team
--
Tel: +44 (0)1709 856 300 |Hepworth Plumbing Products
Fax: +44 (0)1709 856 301 |Edlington Lane, Edlington
Email: |Doncaster, UK
http://www.hepworthplumbing.co.uk |DN12 1BY