Knife gate valve is composed of narrow body and sliding gate, has short construction which saves material, the gate likes a knife has shear functions which can scrape off the adhesion on the sealing surface and automatically remove the debris. The polishing treatment on the gate surface strengthens its penetrating power and effectively guarantees the service life of both packing and valve seat. The bottom of the valve body is provided with the gate hold-down device that can safely presses the gate tightly on the valves seat in order to ensure effective tight-seal. It is generally performed as cutting, connecting or venting device. Due to low flow resistance, and wear resistance, they are widely applied in paper-making, petroleum, chemical, food, cement, mining, metallurgy, alumina, etc
Knife Gate Valves wedge travels perpendicular to the direction of the flow, the blade-shaped gate can cut fiber materials and cut off the medium.
The main construction features of GZP Knife Gate Valve are following:
1.Reinforced body guide improves the strength of body; solid wedge and flexible wedge are available.
2.Non-rising stem and outside screw rising stem designed according to different size.
3.Replaceable Seat Design can be unidirectional seal, bi-directional seal in different kinds of Metal seat or soft seat materials.
4.The top seal of Knife gate valve adopts flexible PTFE, which is reliable and easy to operate.
The range of GZP Knife Gate Valve design is as follows:
1.Size: 2” to 48” DN50 to DN1200
2.Pressure: Class 150lb, PN6-PN25
3.Material: Cast iron, carbon steel, stainless steel and other special materials.
NACE MR 0175 anti-sulfur and anti-corrosion metal materials
4.Connection ends: Flange,Wafer,Lug Type according to ASME B 16.5
5.Face to face dimensions: conform to ASME B 16.10.
6.Temperature: -29℃ to 200 ℃
JLPV valves can be equipped with gear operator, pneumatic actuators, Hydraulic actuators, Electric actuators,bypasses,locking devices,chain-wheels,extended stems and many others are available to meet the customers’ requirements.
