In detail
What it is made of
How it works
Knife gate
The number that matters
Nominal pressure
10bar
The pressure class of the valve body at 20 °C. Working limits depend on the medium and its temperature.
Construction
Parts and materials
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.
Overall and installation dimensions of the gate valve DNOVA GVKN1331N-2W-Fb-ISO body material - cast iron GGG40, knife material - stainless steel AISI 304, seal - NBR, stem only
| DN | L | D | D1 | D2 | N-Th | d | H | stem | Weight | ISO 5211 |
| mm | kg | |||||||||
| 50 | 50±2 | 165 | 125 | 99 | 4-M16 | Ø18 | 342 | Ø16 | 7 | F10 |
| 65 | 50±2 | 185 | 145 | 118 | 4-M16 | Ø18 | 351 | Ø16 | 8 | F10 |
| 80 | 50±2 | 200 | 160 | 132 | 8-M16 | Ø18 | 397 | Ø16 | 10 | F10 |
| 100 | 52±2 | 220 | 180 | 156 | 8-M16 | Ø18 | 443 | Ø18 | 13 | F10 |
| 125 | 58±2 | 250 | 210 | 184 | 8-M16 | Ø18 | 480 | Ø18 | 18 | F10 |
| 150 | 60±2 | 285 | 240 | 211 | 8-M20 | Ø23 | 510 | Ø18 | 23 | F10 |
| 200 | 72±2 | 340 | 295 | 266 | 8-M20 | Ø23 | 600 | Ø22 | 31 | F10 |
| 250 | 72±2 | 395 | 350 | 319 | 12-M20 | Ø23 | 723 | Ø22 | 52 | F14 |
| 300 | 80±2 | 445 | 400 | 370 | 12-M20 | Ø23 | 805 | Ø22 | 64 | F14 |
Valve sketch DNOVA GVKN1331N-2W-Fb-ISO body material - cast iron GGG40, knife material - stainless steel AISI 304, seal - NBR, stem only
Construction and materials of the gate DNOVA GVKN1331N-2W-Fb-ISO 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 nitrile |
| 3 | Knife | Steel AISI304 |
| 4 | Gland packing | PTFE |
| 5 | gland | Carbon steel WCB |
| 6, 7, 10, 13 |
Bolt | Steel AISI201 |
| 8, 16 | Nut | Steel AISI201 |
| 9 | Nut | Cast iron |
| 11 | Support plates | Steel A3 |
| 12 | Stem | Steel 2Cr13 |
| 14 | Bearing cover | Steel A3 |
| 15 | Bearing | ZChSnSb10-6 |
| 17 | Gasket | NBR nitrile |
Material sketch of valve parts DNOVA GVKN1331N-2W-Fb-ISO body material - cast iron GGG40, knife material - stainless steel AISI 304, seal - NBR, stem only
- Body material
- Cast iron GGG40/EN-GJS-400-15
- Stopper Material
- Stainless steel AISI 304/1.4301
- Maximum allowable temperature
- 90 °C
- Connection type
- Compact flanged
- Control type
- Stem only
- Gate valve type
- Knife Gate Valve
- Nominal pressure
- 10 bar
- Type of seal
- NBR
- Coating type
- Epoxy powder
- Country of origin
- China
Production. Usually 7–14 business days after you approve the quotation and pay. Made-to-specification items are confirmed in the quotation.
Freight. Not charged at checkout. A manager quotes air and sea freight to your port or airport, and nothing ships until you approve the price and the freight.
To North America. From approval and payment to the destination port or airport: air 14–24 days, sea 32–60 days. Estimates, not guarantees.
Terms. EXW Ningbo or FOB Ningbo Port; CIF on request. The agreed term is written on the Proforma Invoice.
Total items
Product subtotal