AVK dedicated UL & FM gate valves are designed specifically to fulfill the requirements in the UL 262 and FM 1120/1130 standards. They are available as OS&Y (Outside Screw and Yoke, with rising stem and handwheel) and NRS (Non-Rising Stem, with wrench nut) variants.
The NRS valves are suitable for both outdoor and indoor applications, while the OS&Y rising stem valves are typically used for above-ground indoor applications, since it is easy to recognise their wedge position, even at a distance. The yoke on the OS&Y valve is prepared for easy installation of a fixed monitoring switch.
AVK gate valves are designed with built-in safety in every detail. The wedge is fully vulcanized with AVK’s own drinking water approved EPDM 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.