TestableDouble Check Valve

The Wilkins model 350 double check valve assembly with its revolutionary removable pressure vessel, is designed to protect against backpressure and backsiphonage of polluted water into the potable water supply. In addition to the removable pressure vessel, the 350 series offers low head loss, short lay length and top mounted test cocks resulting in superior valve box installation flexibility. The removable pressure vessel allows for the most rapid repair of any valve in the Backflow Preventer marketplace.  The blow-out, flush fitting great simplifies start-up flushing and winterisation blow-outs (where needed). The 350 is designed for applications where a health hazard does not exist and is suitable for use in residential, commercial, industrial and irrigation applications where a double check assembly is called for.

350 - Standard model c/w 2 x ball valves350L - Less ball valves350S - Supplied with 2 x ball valves and 1 x Y strainer350F - Supplied with Filterball inlet valve and 1 x outlet ball valve

Double Check ValveBackflow Preventer

20 Carr Road, Three Kings Auckland, New Zealand PO Box 27-555, Mt Roskill Auckland 1440 Ph: +64 9 624 1115sales@macdonaldindustries.co.nz

Designed for solar applications and continuous flow heaters. The TVA-ABV valves can also be used in all water heater applications as per TVA installation instructions. This tempering valve with right angle ball valves has been upgraded to include high-temperature components. It provides more accurate control +/- 3 °C from set temperature (to AS4032.2). Will supply 50 °C mix with 55 °C hot supply. The TVA-ABV valve has a forged DR bronze body, integral 60 mesh stainless steel line strainers, integral non return valves to enhance flow through the valve, stainless steel springs, and O-ring seal union connectors.