Manual Knife Gate Valve – World's Largest Gate Valve | ZECO Valvebellow seal valve
Ductile iron wafer knife gate valve with resilient seat (NBR) and 316 stainless steel gate. Operated by a rising stem hand wheel and suitable for up to 10 BAR media pressure. Great for effluent, sewerage treatment plants, and other applicable media (not recommended for abrasive media which will sit in seats).
What is a Manual Knife Gate Valve?
A knife gate valve is a shut-off valve, which means that it is used to start and stop the flow through a pipeline. It is mainly used in fluid-based applications and settings, especially those that involve a dense material.
The “knife” blade that is built in the valve uses its sharp edges to cut through tough or sticky material. The valve uses a pressure drop function to achieve this function and stops the flow when required.
Structure of Knife Gate Valve
The structure of the body and seat eliminates clogging shutoff for flow with fine particles. Additionally, a beveled knife edge helps the gate cut through thick media easily. According to the different working situations: non-rising stem knife gate valve, wafer knife gate valve, lugged knife gate valve, pneumatic knife gate valve, electric knife gate valve, manual knife gate valve and bevel gear knife gate valve are all available.
Product Overview of Knife Gate Valve
| Size Range: | DN50~600mm NPS 2”-24” （Larger size on request） |
| Max Working Press.： | DN50~DN250: 10Bar NPS2~NPS10：150Psi DN300~DN450: 7Bar NPS12~NPS18：90Psi DN500~DN600: 4Bar NPS20~NPS24：60Psi |
| Temp. Range： | -29…+200℃ |
| Seal Tightness： | According to MSS SP-81 |
| Body Material： | Cast Iron, Stainless Steel |
| Gate Material: | Stainless Steel Chrome Plated, Special Alloy |
| Seat Material: | EPDM (120°C) /Viton(200°C) /NBR(90°C) |
| Face to Face: | MSS SP-81 |
| Flange Standard: | GB/T 9113.1, JB/T 79.1, HG 20592, ASME B16.5, EN1092-1 |
Advantages of Knife Gate Valves
- Gland box packing and machined support
- Easy maneuvering and low energy consumption
- Low maintenance through gate guidance via stable top works
- Unique seat design and seat material for high performance and low LCC
- No flow restriction fully open
- One piece casting body
- Stainless steel gate
- Robust gland box packing system
Applications of Knife Gate Valves
- Mining and minerals processing
- Pulp and paper applications
- Water & Wastewater
- Sand and gravel plants
- Tailing lines
- Abrasive slurry materials
ZECO Valve is a professional manual operate gate valve manufacturer, if any inquiries, please be free to contact us.
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