

Body and bonnet made of ductile cast iron EN-GJS 400-15 EN 1563, NBR/EPDM fully galvanized bowl (made of aluminum alloy or cast iron). Body-bonnet O-ring gasket: NBR/EPDM. Silent and reliable operation, simple and compact design – high durability. Epoxy coating minimum 250 microns according to EN ISO 12944-5.
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- Operating temperature: -10°C to +70°C
- Available diameters (dimensions): - DN50 [mm] for Type 6626 valves
- Maximum medium flow rate: - liquid: max. 4 [m/s]
- nominal pressure ratings (PN): - 1.0 MPa
- 1.6 MPa
Valves for gravity flow systems. The valve features a cast iron body that houses a loose ball inside (the closure). The body chamber is closed from the top by a cast-iron cover that is sealed with an o-ring and bolted to the body with hex cap bolts which are flush with the valve cover seats. The ball in the valve before installation is located in the lowest valve body part, sitting in the valve seat. In the operating conditions, the ball is held at the top position within the valve cover pocket by the dynamic force of the liquid stream, or in the closed position, where it seals off the valve seat under the back pressure. All inner and outer cast-iron surfaces of the valve are epoxy powder coated. The check ball valves for gravity flow systems have the ball density higher than water.
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