Non-Rising stem elastic seat gate valve overcomes bad sealing, leakage and rust of general gate valves and can save the fixing space. It is widely used as the adjusting and cutting-off devices of liquid pipeline of tap water, sewage, construction, petroleum, chemical industry, food, medicine, light texture, electric power, metallurgy, energy system and other fields. Feature: 1) Standards: ISO9001:2000 a) Flange standard: GB/T 17241.6 GB9113 b) Experimental standard: GB13927 AP1598 2) Main parts material: Valve body: Grey Cast iron, ductile cast iron, cast steel Gate board: ductile cast iron + EPDM or NBR Inner hexagonal bolt: carbonized treatment Sealing ring: NBR Bonnet: Grey Cast iron, ductile cast iron, cast steel Stem: Stainless steel "O" type sealing ring: NBR Bearing: Tin bronze Screw: Stainless steel Bonnet: Ductile cast iron, cast steel Dustproof cover: NBR Hand wheel: Cast iron 3) Nominal pressure: 1.0～2.5MPa 4) Nominal diameter: 50～600mm 5) Medium applicable: water, oil, gas, etc 6) Working temperature: 0～80癈