Description
The gate valve is designed to be installed on the pipeline as a shut-off device and regulate the flow of medium in water supply systems (except drinking water supply systems) and chemical industry. The principle of operation of the gate valve is to move the gate (knife) perpendicular to the flow of medium. The flow is stopped when the diameter of the nominal bore of the pipeline is completely blocked, and adjusted when it is partially blocked.
Overall and installation dimensions DNOVA GVKN1331N-2W-Fb-ISO knife gate valves, body material - cast iron GGG40, knife material - stainless steel AISI 304, seal - NBR, stem only:
| DN | L, mm | D, mm | D1, mm | D2, mm | D0, mm | H1, mm | T, mm | d, mm | ● | O | N-Th, mm |
| 150 | 57 | 285 | 240 | 211 | 250 | 490 | 14 | 23 | 2 | 6 | 8-M20 |
| 250 | 70 | 395 | 350 | 319 | 250 | 690 | 16 | 23 | 4 | 8 | 12-M20 |
| 300 | 76 | 445 | 400 | 370 | 250 | 815 | 16 | 23 | 4 | 8 | 12-M20 |
| DN | D3, mm | D4, mm | D5, mm | n-Ød, mm | L1, mm | A, mm | B, mm |
| 150 | 125 | 102 | 70 | 4 – Ø12 | 48 | 6 | 20 |
| 250 | 125 | 102 | 70 | 4 – Ø12 | 48 | 6 | 20 |
| 300 | 125 | 102 | 70 | 4 – Ø12 | 48 | 6 | 20 |
Materials of DNOVA GVKN1331N-2W-Fb-ISO gate valves, body material - cast iron GGG40, knife material - stainless steel AISI 304, seal - NBR, stem only:
| № | Part name | Material |
| 1 | Body | cast iron GGG40 |
| 2 | Seat seal | NBR |
| 3 | Schieber | SS304 stainless steel |
| 4 | Guide seal | PTFE |
| 5 | Seal | PTFE |
| 6 | Gland packing | WCB steel |
| 7 | Nut | brass |
| 8 | Rod | 2Cr13 steel |
| 9 | Rack | steel Q235 |
| 10 | Rack top plate | cast iron QT450 |
| 11 | Bearing | GCr15 steel |
| 12 | O-ring | NBR |
Specifications
Delivery
The cost and delivery time for your order depend on several factors, including the specific product you are ordering, the quantity, and the country of destination. Each product may have different manufacturing lead times and shipping requirements, which can affect the overall delivery schedule.
To get the most accurate and up-to-date information on delivery costs and timelines, we recommend contacting our sales managers. They will be happy to provide you with a detailed quote and estimated delivery time based on your specific requirements.
Please feel free to reach out to us for any questions or further assistance regarding your order.