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-S, body material - steel WCB, knife material - stainless steel AISI 304, seal - METAL, handwheel operated
| Nominal diameter DN, mm | 50 ÷ 200 |
| Nominal pressure of the gate valve, bar | 10 |
| Flow direction | one-way |
| Temperature of the working medium, ⁰C | from -30 to +400 |
| Tightness in the gate valve | B |
| Working medium | wastewater, pulp, viscous, powder and crystallized media, acids |
| Connection to the pipeline | interflange |
| Nominal pressure of the flanges, bar | DN50÷150 – 10/16 DN200 – 10 |
| Control type | steering wheel |
| Gate type | single-disk |
| Stem | non-retractable |
| Body material | carbon steel WCB |
| Gate material | stainless steel AISI 304 |
| Seal material | metal |
Overall and installation dimensions of the gate valve DNOVA GVKN3431M-1W-Fb-S, body material - steel WCB, knife material - stainless steel AISI 304, seal - METAL, handwheel operated
| DN | L | D | D1 | D2 | D0 | N-Th | d | H | Weight |
| mm | kg | ||||||||
| 50 | 48 | 160 | 125 | 99 | 180 | 4-M16 | Ø18 | 290 | 7 |
| 80 | 51 | 195 | 160 | 132 | 220 | 8-M16 | Ø18 | 350 | 10 |
| 100 | 51 | 215 | 180 | 156 | 240 | 8-M16 | Ø18 | 385 | 13 |
| 150 | 57 | 280 | 240 | 212 | 280 | 8-M20 | Ø23 | 485 | 23 |
| 200 | 70 | 335 | 295 | 266 | 300 | 8-M20 | Ø23 | 565 | 30 |
Valve sketch DNOVA GVKN3431M-1W-Fb-S, body material - steel WCB, knife material - stainless steel AISI 304, seal - METAL, handwheel operated
Construction and materials of the gate DNOVA GVKN3431M-1W-Fb-S, body material - steel WCB, knife material - stainless steel AISI 304, seal - METAL, handwheel operated
| № | Part name | Material |
| 1 | Body | Steel WCB |
| 2 | Disk | Steel 304 |
| 3 - 4 | Bolt / Nut | Steel A3 |
| 5 | Sealing | 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 | Helm | cast iron QT450 |
| 14 - 15 | Bolt / Nut | Steel A3 |
| 16 | Bolt / Nut | cast iron QT450 |
| 17 - 18 | Bolt / Nut | Steel A3 |
| 19 | Support | Steel 304 |
Material sketch of valve parts DNOVA GVKN3431M-1W-Fb-S, body material - steel WCB, knife material - stainless steel AISI 304, seal - METAL, handwheel operated
Specifications
Delivery
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