AVK gate valves are designed with built-in safety in every detail. The wedge is fully vulcanized with AVK’s own oil and gas resistant NBR rubber compound. It features an outstanding durability due to the ability of the rubber to regain its original shape, the double bonding vulcanization process and the sturdy wedge design. The triple safety stem sealing system, the high strength stem and the thorough corrosion protection safeguard the unmatched reliability
FEATURES
– Fixed, integral wedge nut prevents vibration and ensures durability
– Wedge fully vulcanized with NBR rubber and equipped with wedge shoes to provide smooth
operation
– Wedge and body guide rails ensure stable operation
– Stem of acid-resistant stainless steel with wedge stop and rolled threads for high strength
– Full circle thrust collar provides fixation of the stem and low free running torques
– Triple safety stem sealing with an NBR wiper ring, a polyamide bearing with four NBR O-rings,
and an NBR rubber manchette
– Round NBR bonnet gasket fixed in a recess
– Countersunk and sealed stainless steel bonnet bolts encircled by the bonnet gasket
– Full bore
– Low operating torque
– Fusion bonded epoxy coating in compliance with DIN 3476 part 1 and EN 14901, GSK approved
– DN450-600 are fitted with stainless steel roller bearings and external polyamide wedge shoes
providing low operating torques. Furthermore, with ISO top flange and eye lifting bolts.
– DN500-600 are available with DN by-pass
