Knife type gate valve introduction ：

Knife type gate valve is a kind of gate valve, a straight stroke cut off valve。knife gate valve head has a beveled edge,It can easily cut-off the media, suitable for fiber and solid particles media and sewage treatment system, can be by manual, pneumatic, electric actuator, widely used in papermaking, mining, chemical, sewage treatment and other process automatic control system.

Product features

1, the valve adopts integral design, small fluid resistance, flexible and convenient operation.

2. The manual knife gate valve screw transmission adopts double plane bearing design, which greatly reduces the transmission friction, so that the valve opening is light and smooth. 

3. The knife gate valve sealing seat adopts movable sealing, and the O-ring preload is used to provide preload to make the sealing seat close to the valve disc, the leakage is greatly reduced, and the wear of the sealing pair in long-term use has an automatic compensation function to improve the service life. 

4. Fixed guide claw, no groove design, it is not easy to cause media accumulation or stuck.

5. The valve seat can choose metal hard seal or soft seal according to the needs of the medium and working conditions: the gate plate adopts the surface chrome plating or ion nitriding treatment, so that the gate plate is more wear-resistant and the sealing surface has a longer service life; Soft seal optional PTFE valve seat or reinforced PTFE seat or EPDM, nitrile rubber, good sealing, corrosion resistance. 

6, the medium adaptation range is wide: good sealing performance and economical practicality, the operation can be manual, pneumatic, electric, the practical range is very wide.

Main technical parameters and performance: nominal pressure: 0.6MPa, 1.0MPa, 1.6MPa, 2.5MPa, 150Lb nominal diameter: DN50~600mm NPS 2"~24" Applicable temperature: -20~+650°C (the specific temperature range depends on the sealing material and the nature of the medium) Connection flange: ANSI B16.5, GB/T9113, JB/T79, HG, SH, JIS, DIN, NF, BS Body Material: WCB, ZG1Cr18Ni9Ti, ZG1Cr18Ni12Mo2Ti, CF8, CF8M, CF3, CF3M Sealing Type: Hard Seal, Soft Seal Leakage Amount: Hard Seal: D Class (Liquid 0.1×DN mm3/s) Soft Seal: Class A (Zero Leakage) Matching Accessories: Mounting Flange