Products / Air release, penstocks & plug valves Share Butterfly valves Knife gate valves Gate valves & fire products Check valves Air release, penstocks & plug valves Penstocks & servere service valves Actuation & automation Air release, penstocks & plug valves AVK series 851 air release valves Variant: 851 - DN50-150, double Orifice, Ductile Iron body, ABS plastic internals, 316 Stainless Steel trim and flange drilling to AS 4807 B5. 851/10 for PN25 and 851/20 for PN16. Available in anti-slam. AVK series 851 VNR vented non-slam air release valves Variant: 851 VNR - DN50-150, double Orifice with vented non-return. Non-slam attachment, Ductile Iron body, ABS plastic internals, 316 Stainless trim and flange drilling to AS 4807 B5. 851/10 for PN25 and 851/20 for PN16. AVK series 701 air release valves Variant: 701 - DN25 (701/90), DN50 (701/91), ARV-1A (701/90), ARV-2KA (701/91), PN16, automatic function, GRP body, BSP thread and PP float. 1A (3G) DN25 metal body universal internals to 701/90. Ventomat sewage air release valves Variant: RGX - RGX & RGX11. Site and project specific brands are also available on request. AVK series 570 with 758 gearbox gate valve Variant: 570/758 - DN80-200, PN16, series 570 with IP68 2:1 bevel gear operator. Right angle operation ideal for air valve isolations in valve pits. AVK series 29 hydrant isolation valve Variant: 29/00 - DN80 & DN100, PN16, Ductile Iron, flanged to AS 4087. Available in DN80 or DN100 inlet or outlet flange slotted with CC & ACC options. Orbinox wall mount, channel & weir gate Variant: N/A - 150-2000mm2, 6-10mtr H2O pressure rating, Stainless Steel, EPDM seals and UHMWPE guides. Optional extras include four sided sealing, square or rectangular, exotic materials, and rising or non-rising spindle. Orbinox stop gates & stop logs Variant: N/A - 150-2000mm2, Stainless Steel & aluminium construction. Directional stop gate with uni or bi-directional arrangements. Contact your local representative for further information. AVK series 764/51 resilient seated plug valve Eccentric Variant: 764/51 - DN80-300, Ductile Iron body, fully vulcanised NBR plug, hydrocarbon resistant, welded nickel seat, full port design with ISO mounting flange and AS 4087 B5 drilling. Other drilling options available.