AVK SWING CHECK VALVE, METAL SEATED

Description

Key Features

• Clear way and full bore for low head loss and easy pig-cleaning
• Metal seat in gunmetal bronze for high durability
• Shaft fitted in the bonnet allowing for easy maintenance without removing valve from pipeline
• Shaft, bolts and washers in 1.4404 (AISI 316L) acid resistant stainless steel
• Free protruding shaft end for mounting of lever and weight or spring to assist valve closing and avoid water hammer
• Hinge of stainless steel for sizes ≤ DN 200; ductile iron coated with drinking water approved epoxy for larger
• Ductile iron disc covered with drinking water approved EPDM
• Bonnet gasket lying in a groove between bonnet and body prevents blow-out
• All seals and coatings with contact to the fluid are approved for drinking water – coating is blue, 300µm fusion bonded epoxy
• Disc mounted in a flexible rubber bushing allowing it to tilt slightly in all directions and adjust exactly to the valve seat
• Bosses on each side of the valve seat allow for installation of pressure gauge, by-pass, etc.
• WRAS approved materials

AVK swing check valves provide easy access to maintenance simply by unscrewing a few bolts and lifting the bonnet assembly including shaft and disc out of the body. The disc is fully vulcanized with EPDM rubber and is mounted in a nylon bushing allowing it to move slightly horizontally and vertically to achieve compete tightness. AVK swing check valves are available with closed bushings and with free shaft for mounting of lever and weight/spring.