How it works
Multi-turn handwheel
Knife gate
The number that matters
Max. medium temperature
90°C
The highest medium temperature this valve is rated for.
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.
Main technical characteristics of the gate valve DNOVA GVKN1331N-2W-Fb-R, body material - cast iron GGG40, knife material - stainless steel AISI 304, seal - NBR, gear operated
| Nominal diameter DN, mm | 400 ÷ 600 |
| Nominal pressure of the gate valve, bar | DN400 – 6 DN500÷600 - 4 |
| Flow direction | two-way |
| Temperature of the working medium t, °C | from -10 to +90 |
| Tightness in the gate | A |
| Working medium | wastewater, pulp, viscous, powder and crystallized media |
| Connection to the pipeline | interflange |
| Nominal pressure of the flanges, bar | 10 |
| Control type | gearbox |
| Stem | non-retractable |
| Body material | cast iron GGG40 |
| Gate material | stainless steel AISI 304 |
| Seal material | NBR |
| Maximum service life, years | 15 |
| Maximum resource, cycles of closing/opening | 35,000 (in non-aggressive environment and average pressure and temperature values) |
Overall and installation dimensions of the gate valve DNOVA GVKN1331N-2W-Fb-R, body material - cast iron GGG40, knife material - stainless steel AISI 304, seal - NBR, gear operated
| DN | PN | L | D | D1 | D2 | D0 | H1 | d | T | N | M | Weight |
| 400 | 6 | 90 | 565 | 515 | 480 | 350 | 970 | 27 | 24 | 16 | M24 | 90 |
| 500 | 4 | 105 | 670 | 620 | 582 | 310 | 1200 | 27 | 24 | 20 | M24 | 192 |
| 600 | 4 | 125 | 780 | 725 | 682 | 310 | 1410 | 30 | 27 | 20 | M27 | 252 |
Valve sketch DNOVA GVKN1331N-2W-Fb-R, body material - cast iron GGG40, knife material - stainless steel AISI 304, seal - NBR, gear operated
Construction and materials of the gate DNOVA GVKN1331N-2W-Fb-R, body material - cast iron GGG40, knife material - stainless steel AISI 304, seal - NBR, gear operated
| № | Part name | Material |
| 1 | O-ring | Nitrile NBR |
| 2 | Gate valve body | Cast iron GGG40 |
| 3 | Disk seal | Nitrile NBR |
| 4 | Disk | steel AISI304 |
| 5 | Bolt | steel AISI201 |
| 6 | Gland packing | PTFE |
| 7 | Bolt and nut | steel AISI201 |
| 8 | gland | Carbon steel WCB |
| 9 | Bolt and nut | steel AISI201 |
| 10 | Nut | Brass |
| 11 | Stem | steel 2Cr13 |
| 12 | Support plates | steel A3 |
| 13 | Bolt | steel A3 |
| 14 | Bearing cover | Carbon steel WCB |
| 15 | Bearing | ZChSnSb10-6 |
| 16 | Gearbox | Cast iron GGG40 |
Material sketch of valve parts DNOVA GVKN1331N-2W-Fb-R, body material - cast iron GGG40, knife material - stainless steel AISI 304, seal - NBR, gear operated
- 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
- Gear
- Gate valve type
- Knife Gate Valve
- 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