Gas Gate valve, steel pipes, NBR PUR, AVK

For gas steel pipes, external PUR, replaceable stem sealing, NBR, DN50-600

Gate valve with long spigot ends, with external PUR. For gas -10°C to +60°C
AVK gate valves are designed with built-in safety in every detail and with full traceability of vital valve components. 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 replaceable under pressure, 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
• Stainless steel stem with wedge stop and rolled threads for high strength
• Triple safety stem sealing with an NBR wiper ring and four NBR O-rings in a stem seal nut of dezincification resistant brass replaceable under pressure. A rubber manchette is the main seal to the flow.
• Full circle thrust collar provides fixation of the stem and low free running torques
• Round NBR bonnet gasket fixed in a recess
• Countersunk and sealed stainless steel bonnet bolts encircled by the bonnet gasket
• Full bore
• Low operating torques
• Fusion bonded epoxy coating in compliance with DIN 3476 part 1 and EN 14901, PUR according to EN 10290 type 2, class B for extra cathodic protection externally
• DN 500-600 are fitted with stainless steel roller bearings and external polyamide wedge shoes providing low operating torques. Furthermore, with ISO top flange F14 and eye lifting bolts.