【QWY series】Bi-directional seal Knife Gate Valve
	Model: QWYZ73X   Working Pressure: DN850 6bar      Type: Flange Design Standard: MSS SP-81 Flange Standard: customize Face to Face: MSS SP-81 Testing Standard: API-598 Operation: hydraulic Main material: Q235 Disc material: SS316 Sealing material: NBR Packing: rubber packing Applicable medium: Applicable for sewage treatment, Slurry,Pulp Data Sheet    Installation Instructions