This product is no longer made. The nearest alternative is the Brownall 1688. Please call +44 (0)1482 601030 or email sales@flowstar.co.uk for price and availability.
The NABIC Fig 503 Three Way Valve (also known as a Three Way Escape Valve) has been designed for use on vented hot water systems, to ensure there is a permanent connection from the boiler or calorifier to atmosphere. Fitting a NABIC 503 allows the use of a single common vent pipe, and permits continued operation of the system whilst maintenance is carried out on an individual unit. NABIC Valves now come with an Industry leading 5 Year Guarantee.
Specification
Sizes: 3/4" (DN20), 1" (DN25), 1.1/4" (DN32), 1.1/2" (DN40), 2" (DN50), 2.1/2" (DN65)
Connections: Female BSP
Materials: Gunmetal body
Pressure: 7 Barg Max
Temperature: 93 degC Max