AVK GATE VALVE, FLANGED, PN10/16

Features

• Wedge nut in dezincification resistant brass, designed as a fixed, integral part of the wedge which prevents vibration and ensures durability
• Wedge and wedge nut fully encapsulated in drinking water approved EPDM
• Wedge shoes in PA and guide rails on the body make the wedge slide easily up and down, keeping operational torque low even at high differential pressure
• A large conical stem hole going all the way through the wedge ensures circulation and prevents accumulation of stagnant water
• Stem in stainless steel with wedge stop and rolled threads for high strength
• Full circle thrust bearing keeps the stem firmly lined up and ensures low operating torque. Sizes DN450 to DN600 have a double roller bearing and DN700+ have stainless steel washers coated with bronze/PTFE composite
• Three independent stem seals: an NBR wiper ring protects against contamination from outside, four O-rings surround the radial bearing and innermost a lip seal backed up by an O-ring act as the main seal to the flow
• Bonnet gasket with a circular cross section fixed in a recess to avoid blow-out
• Bonnet bolts in A2-70, counterbored, sealed with hot melt glue and encircled by the bonnet gasket
• Corrosion protected with fusion bonded epoxy, applied in a GSK approved process, blue RAL 5017
• Bosses for by-pass
• ISO actuator flange; gearbox or actuator is recommended
• Detachable covers at the bottom for flushing of wedge rail