Dry Tests Pipework During & After Installation Triple scale Bar, psi & k Pa Scales Suitable for water, air, gas & petroleum oil pipes upto 4bar & for testing combi systems. Can be left on test while flooring is laid to reveal any nail damage. Test hot & cold supplies separately to ensure pipes are not crossed. Fitted with Schrader Valve & 15mm Pushfit° fitting. With rubber boot for added protection