Analysis of pneumatic type knife gate valve product matters needing attention in use and their features

pneumatic type knife gate valve as the name suggests is flat at the bottom of the pneumatic valve plate with oblique incision knife type, have the ability to cut off the medium in pneumatic valve closing is not blocked by the medium. The pneumatic valve is commonly used in the pulp, coal ash, chemical raw materials, water, food and other medium circulation of opening and closing. Pressure range is generally. MPa use within, the temperature is generally used under ℃, high temperature can also be used instead of special material to use.
type pneumatic type knife gate valve with knife gate, has excellent shear effect, the most suitable for paste, powder material, such as fiber is difficult to control the fluid flow, widely used in papermaking, petrochemical, mining, water drainage, food and other industries. Has a variety of pneumatic valve seat to choose from, but also according to the requirements of field control, equipped with electric or pneumatic actuators, complete the initiative in the operation of pneumatic valve. Material: cast iron, carbon steel, stainless steel, the size limitations: DN ~ DN, maximum pressure:. MPa pneumatic valve type disc by using the knife, knife switches have superior shear effect, the most suitable for paste, powder material, such as fiber is difficult to control the fluid flow, widely used in papermaking, petrochemical, mining, water drainage, food and other industries. Has a variety of pneumatic valve seat to choose from, but also according to the requirements of field control, equipped with electric or pneumatic actuators, complete the initiative in the operation of pneumatic valve.
pneumatic type knife gate valve opening and closing is ram, the ram movement direction perpendicular to the direction of flow and the pneumatic type knife gate valve can only be fully open and close, not to adjust and throttling. Sealing face has two gate, two of the most commonly used model of pneumatic valve gate sealing surface form a wedge, the wedge Angle vary with parameters of pneumatic valve, usually, pneumatic type wedge knife gate valve disc can be made into a whole, is called a rigid disc; Can also make it generates trace of deformation of ram, in order to improve the manufacturability, make up for the sealing surface Angle in the process of our processing deviation, the pneumatic type damper is called elastic disc knife gate valve is closed, sealing surface can only rely on medium pressure to seal, that depend on medium pressure, the disc will be to the other side of the pneumatic valve seat sealing surface pressure to ensure that the seal face seal, this is the seal. Most of the pneumatic type knife gate valve is sealed with mandatory, the pneumatic valve is closed, to rely on outside force forced the ram pressure to the pneumatic seat, to ensure the sealing surface sealing.