Products
COVNA Pneumatic Knife Gate Valve
knife gate valves are available in various designs, one-piece body and two-piece bodies.
knife gate valves are available in various designs, one-piece body and two-piece bodies.
Product details description
Knife gate valves are available in various designs, one-piece body and two-piece bodies, wafer, lug and flange connection, rising stem and non-rising stem, unidirectional and bidirectional seal, soft seat and metal seat, bonnetless and bonneted designs.
| Technical Specifications of Ductile iron Wafer Knife Gate Valve | |
| Size Range | DN 50~1200mm NPS 2”-48”(Large diameter on request) |
| Design Options | Unidirectional or Bidirectional Seal;
Rising Stem or Non-rising stem |
| Body Material | GGG40, GGG50 |
| Knife Material | SS304, SS304L, SS316, SS316L, SAF2205, SAF2507
or other requested |
| Seat Material | NR：70°C NBR：80°C EPDM: 120°C PTFE: 150°C
Viton/FKM: 180°C Metal seat: SS304/316+Stellite ≥ 200°C |
| Applicable Standards | Design & Manufacture: MSS SP-81
Face to Face: MSS SP-81/ EN558-1 Series 20 Flange connection: ASME B 16.5, EN1092-1, AS2129 “D”/”E” (Other connections on customers’ request) Test: MSS SP-81 |
| Operation
Options |
Lever/Handwheel/Bevel Gear/Chainwheel
Pneumatic/Hydraulic/Electric actuator |
| Applications | Pulp & Paper / Water & Waste Water/Mining/Metallurgy
/Petrochemical /Printing & Dying / Pharmacy/ Beverage& Food |
| Technical Specifications of Ductile iron Wafer Knife Gate Valve | |
| Size Range | DN 50~1200mm NPS 2”-48”(Large diameter on request) |
| Design Options | Unidirectional or Bidirectional Seal;
Rising Stem or Non-rising stem |
| Body Material | GGG40, GGG50 |
| Knife Material | SS304, SS304L, SS316, SS316L, SAF2205, SAF2507
or other requested |
| Seat Material | NR：70°C NBR：80°C EPDM: 120°C PTFE: 150°C
Viton/FKM: 180°C Metal seat: SS304/316+Stellite ≥ 200°C |
| Applicable Standards | Design & Manufacture: MSS SP-81
Face to Face: MSS SP-81/ EN558-1 Series 20 Flange connection: ASME B 16.5, EN1092-1, AS2129 “D”/”E” (Other connections on customers’ request) Test: MSS SP-81 |
| Operation
Options |
Lever/Handwheel/Bevel Gear/Chainwheel
Pneumatic/Hydraulic/Electric actuator |
| Applications | Pulp & Paper / Water & Waste Water/Mining/Metallurgy
/Petrochemical /Printing & Dying / Pharmacy/ Beverage& Food |
