Blowdown valve
August 1st 2007

The new MPA 46 from Flowserve Gestra is a straight-through rapid action intermittent blowdown that the company says can help reduce energy loss.To minimise internal wear the valve is fitted with a radial stage nozzle downstream of the valve seat, together with an improved arrangement of valve seals on the low pressure side. It is operated by means of a direct acting integral diaphragm compressed air or pressurised water actuator. The valve features a large cross-sectional area of the orifice that creates a suction effect when the valve is opened, providing a short-term high water flow that aids the rapid and effective discharge of harmful sludge and sediment.