Pneumatic knife valve made in accordance with different caliber dark rod and rod two forms (dark rod DN50 ~ 900mm, bright rod DN50-900mm), full circular DC channel design does not slag, no jamming. The bottom end of the blade is processed into a knife-edge shape, which has the function of cutting off the soft materials such as fiber, pulp and wood pulp and has a good function of opening and closing. In the upper edge of the blade is installed a hard Teflon scraper to prevent dust, gravel and other abrasives into the stuffing box, can significantly increase the life of the knife. Valve plate made of stainless steel, fine grinding and polishing treatment can get the best sealing effect. Compact design, small footprint, light weight, low cost, easy to install, wear-resistant anti-blocking measures to improve, easy maintenance, easy to use and long life, and optional drive.
Pneumatic knife gate valve Pneumatic knife gate valve Knife gate valve American standard knife gate valve Precautions and characteristics of the use of the product: Knife gate valve opening and closing pieces is the gate, gate direction of motion and fluid perpendicular to the knife gate valve Can only be fully open and closed, can not be adjusted and cut. The gate has two sealing surfaces. The two most commonly used gate valves are wedge-shaped. The wedge angle varies with the valve parameters, typically 50, and the gate of the wedge gate valve can be made in one piece and called Rigid gate; can also be made to produce a small amount of deformation of the gate, to improve its technology to make up for sealing surface angle in the process of deviation, this gate is called elastic gate knife gate valve closed, the sealing surface Can only rely on media pressure to seal, that is, rely on the media pressure to the pressure on the other side of the sealing surface of the valve seat to ensure that the sealing surface of the seal, which is self-sealing. Most of the knife gate valve is forced seal, that is When the valve is closed, it must rely on external force to force the gate to the valve seat to ensure the sealing surface of the seal.
Pneumatic knife gate valve is controlled by the pneumatic actuator valve, in order to achieve the valve on and off a valve. It can be divided into two parts, the upper part of the pneumatic actuator, the lower part of the valve.
Pneumatic knife valve has the advantages of simple and compact structure, reasonable design, light material, reliable sealing, light and flexible operation, small volume, smooth passage, small flow resistance, light weight, easy installation and easy disassembly. 2.5MPa, the use of temperature -29-650 â„ƒ under normal circumstances. Knife gate valve with a shear function, scraping off the sealing surface of the adhesive, automatic removal of debris, stainless steel gate to prevent leakage caused by corrosion leak