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 GVKR3131E-1W-Fb-S, body material - stainless steel AISI 304, knife material - stainless steel AISI 304, seal - EPDM, handwheel operated
| Nominal diameter DN, mm | 50 ÷ 300 |
| Nominal pressure of the gate valve, bar | 10 |
| Temperature of the working medium t, ⁰C | EPDM seal - from -10 to +110 METAL seal - from -10 to +400 |
| Ambient temperature, ⁰C | from -45 to +50 |
| Working medium | seal steel 304 - waste water, pulp, viscous, powder and crystallized media, acids seal EPDM - water, slightly polluted liquids with suspended particles content up to 5% |
| Flow direction | one-sided |
| Tightness class | seal steel 304 - B seal EPDM - A |
| Control type | steering wheel |
| Connection to the pipeline | wafer |
| Nominal pressure of flanges, bar | DN50÷150 – 10/16 DN200÷300 – 10 |
| Body material | stainless steel AISI 304 / AISI 316 |
| Gate material | stainless steel AISI 304 / AISI 316 |
| Seal material | EPDM or metal |
| Application areas | heating and water supply systems; industrial pipelines |
Overall and installation dimensions of the gate valve DNOVA GVKR3131E-1W-Fb-S, body material - stainless steel AISI 304, knife material - stainless steel AISI 304, seal - EPDM, handwheel operated
| DN | L | D | D1 | N - Th | Weight |
| 50 | 48 | 160 | 125 | 4 – M16 | 8 |
| 65 | 48 | 180 | 145 | 4 – M16 | 11 |
| 80 | 51 | 195 | 160 | 8 – M16 | 12 |
| 100 | 51 | 215 | 180 | 8 – M16 | 15 |
| 125 | 57 | 245 | 210 | 8 – M16 | 24 |
| 150 | 57 | 280 | 240 | 8 – M20 | 35 |
| 200 | 70 | 335 | 295 | 8 – M20 | 50 |
| 250 | 70 | 390 | 350 | 12 – M20 | 64 |
| 300 | 76 | 440 | 400 | 12 – M20 | 80 |
Valve sketch DNOVA GVKR3131E-1W-Fb-S, body material - stainless steel AISI 304, knife material - stainless steel AISI 304, seal - EPDM, handwheel operated
Construction and materials of the gate DNOVA GVKR3131E-1W-Fb-S, body material - stainless steel AISI 304, knife material - stainless steel AISI 304, seal - EPDM, handwheel operated
| № | Part name | Material |
| 1 | Body | Steel 304/316 |
| 2 | Slider | Steel 304/316 |
| 3-4 | Bolt / nut | Steel 304 |
| 5 | padding | PTFE + graphite |
| 6 | gland | Steel 304 |
| 7-9 | Bolt / washer / nut | Steel 304 |
| 10 | Stem | Steel 304 |
| 11 | staple | Steel A3 |
| 12 | Main bracket | Steel A3 |
| 13 | Bearing | ZChSnSb10-6 |
| 14 | Helm | Cast iron GGG40 |
| 15 | Sealing | Steel 304 / EPDM |
Material sketch of valve parts DNOVA GVKR3131E-1W-Fb-S, body material - stainless steel AISI 304, knife material - stainless steel AISI 304, seal - EPDM, handwheel operated
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.