Plate closures (flat valves) - for plastic pipelines
The new plate closure has reduced cross-section (patented), which enabled weight reduction by 35%. This closure consists of two flat steel bodies between which a closing blade moves; pressure tightness is guaranteed by two O-rings, one upper and one lower. The plate closure is equipped with an internal pressure equalizer and it enables easy opening if pressure between the lower and the upper part is different. For the valve opening and closing, a quarter of turning using the regulatory square is sufficient. They are available in two versions: made of steel and of anodized aluminium alloy "Ergal", with considerable reduction in weight.