Keystone GRW/GRL industriell mjuktätande vridspjällsventil
Keystone™ serie GRW/GRL är en kraftig industriell mjuktätande vridspjällsventil. GRW - för inspänt montage. GRL - med luggad design.
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Bernhard Witzelsteiner
East Area Sales Manager
Tel. 070 378 83 35
Fredrik Malmström
Inside Sales Engineer
Tel. 040-33 02 33
Johan Riedenlow
South Area Sales Manager
Tel. 040-33 02 30
| Certifications | ABS, CRN, CUTR, PED, SIL capable |
| End Connection | Lugged, Wafer |
| Application | Air Circulation, Balance of Plant, Bulk Storage, Bulk Conversion Other, Compressors , Conveyors, Cooling Water, Cruise Ship, Facilities & Process Utilities, Blowers |
| Material | Ductile Iron, Duplex, Epdm Rubber, Monel, Nylon, Super Duplex, 316L Stainless Steel, 316 Stainless Steel, 304 Stainless Steel, Buna-N, Aluminum Bronze |
| Operating Temperature | Less than 150 C |
| Pressure Class | PN, ASME |
| Process Connection Type | 150RF, PN16 |
| Seat/Seal Type | Resilient |
| Shutoff Class | Zero Leakage |
| Standards | API 609, ASME B16.34 |
| Valve Size | NPS 18 / DN 450, NPS 20 / DN 500, NPS 2-1/2 / DN 65, NPS 24 / DN 600, NPS 3 / DN 80, NPS 14 / DN 350, NPS 12 / DN 300, NPS 6 / DN 150, NPS 8 / DN 200, NPS 16 / DN 400, NPS 4 / DN 100, NPS 10 / DN 250 |
| Valve Size Standard | DN, NPS |
| Valve Type | Butterfly |
| Media | Air, Air, Inert Gas, Ammonia, Fuel Oil, Hot Water, Liquids, Specialty Gases, Natural Gas, Water, Vacuum, Steam, Oxygen |
| Stem | Live loaded, Adjustable packing |
- Wafer and lugged body design with face-to-face dimension, according to EN 558 Series 20 and API 609.
- Designed according to EN 593 and API 609.
- The seat is field replaceable and fully isolates the body and shaft from the flow.
- Primary shaft sealing exceeds the pressure rating of the valve and prevents leakage through shaft area to atmosphere.
- A secondary shaft sealing provides back-up safety.
- A molded-in O-ring in the seat for flange sealing eliminates the need for gaskets.
- Shaft seals prevent moisture penetrating into the shaft area.
- The two piece shaft allows for a thin disc and provides minimal obstruction to flow (up to DN 300/ NPS 12).
- Rounded polished disc edge gives full concentric sealing, lower torques, longer seat life and drop-tight shut-off.
- Body locating holes allow ease of installation and centering between the flanges.
- Extended body neck allows for pipe insulation.
- Top and bottom shaft bearings for optimized support and minimum friction and decreased torque.
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