Description
Knife gate valves are a specific type of gate valve that are typically used in industries for handling tough solids and slurries. Named for their shape, knife gate valves have a sharp, knife-like gate that can cut through viscous or solid material in the flow. They are commonly used in wastewater treatment plants, paper mills, mining operations, and food industries, among others. Their primary function is to start or sop a flow or adjust its volume, but they do not control the pressure or flow rate.
Main technical characteristics of the gate valve DNOVA GVKN3431M-1W-Fb-2P, body material - Carbon Steel WCB, knife material - stainless steel AISI 304, seal - METAL, pneumatic actuator
| Nominal diameter DN, mm | 50 ÷ 400 |
| Nominal pressure of the gate valve, bar | 10 |
| Temperature of the working medium t, ⁰C | from -30 to +400 |
| Working medium | water, slightly contaminated liquids with suspended particles content up to 5% |
| Direction of medium flow | two-way |
| Tightness class | B |
| Control type | pneumatic cylinder |
| Connection to the pipeline | interflange |
| Nominal pressure of flanges, bar | DN50÷150 – 10/16 DN200÷400 - 10 |
| Body material | WCB steel |
| Gate material | AISI 304 stainless steel |
| Application areas | heating and water supply systems, industrial pipelines. |
| Service life, years | 15 |
Overall and installation dimensions of the gate valve DNOVA GVKN3431M-1W-Fb-2P, body material - Carbon Steel WCB, knife material - stainless steel AISI 304, seal - METAL, pneumatic actuator
| DN | 50 | 65 | 80 | 100 | 125 | 150 | 200 | 250 | 300 |
| L | 48 | 48 | 51 | 51 | 57 | 57 | 70 | 70 | 76 |
| D | 160 | 185 | 195 | 215 | 250 | 280 | 335 | 390 | 440 |
| D1 | 125 | 145 | 160 | 180 | 210 | 240 | 295 | 350 | 400 |
| D2 | 99 | 118 | 132 | 156 | 184 | 212 | 266 | 319 | 370 |
| D0 | 80 | 100 | 100 | 125 | 125 | 160 | 160 | 200 | 200 |
| d | Ø18 | Ø18 | Ø18 | Ø18 | Ø18 | Ø23 | Ø23 | Ø23 | Ø23 |
| N-Th | 4-M16 | 4-M16 | 8-M16 | 8-M16 | 8-M16 | 8-M20 | 8-M20 | 12-M20 | 12-M20 |
| H, mm | 455 | 500 | 530 | 635 | 715 | 810 | 955 | 1090 | 1225 |
| Weight | 9 | 11 | 14 | 17,5 | 21 | 29 | 41 | 62 | 75 |
Valve sketch DNOVA GVKN3431M-1W-Fb-2P, body material - Carbon Steel WCB, knife material - stainless steel AISI 304, seal - METAL, pneumatic actuator
Construction and materials of the gate DNOVA GVKN3431M-1W-Fb-2P, body material - Carbon Steel WCB, knife material - stainless steel AISI 304, seal - METAL, pneumatic actuator
| № | Part name | Material |
| 1 | Body | Carbon steel |
| 2 | Disk | Stainless steel 304 |
| 3-4 | Bolt / Nut | Steel A3 |
| 5 | Seat seal | Metal |
| 6 | gland | Steel WCB |
| 7-9 | Bolt / Nut | Steel A3 |
| 10 | Stem | Steel 2Cr13 |
| 11 | Support plates | Steel A3 |
| 12 | Bearing | ZChSnSb10-6 |
| 13 | Pneumatic actuator | - |
| 14 | Stem nut | Steel A3 |
| 15-16 | Bolt / Nut | Steel A3 |
| 17 | Support | Steel 304 |
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.