LQW800S jacket-connecting rod eccentric flap valve is the execution unit of pneumatic unit portfolio instruments, and is also an important part of automatic control system of the production process. It can match with control devices such as localizer and solenoid pilot actuated valve, and can be automatically or remotely (adjust or cut off) widely used in power plants, metallurgy, textile, glass, cement, chemical industry, and through all these industries, it will have frequent fast opening or closure effect on the air smoke or gas which is in the pipeline systems. It is suitable for occasions of large-diameter, high flow, low dropout, low leakage and no leakage. In order to avoid the phenomenon of duct obstruction caused by cooling and condensation of the special medium during the process flow, the valve is specially designed the outsourcing jacket structure, principally speaking, its flange size is two blocks greater than DN to meet the user's special process requirements.
Structural features:
LQW800S jacket-connecting rod eccentric flap valve is mainly composed of two parts: valve body parts and pneumatic actuators. Body parts are composed by the body, jacket, valve plates, shaft, four-bar linkage, stuffing and other parts. Among which, the body, valve plate, jacket is welded by steel, and their structure is light weighted. When the nominal pass DN≥450A through, take the external bearing form to make the opening and closing of the Pan-work more flexible and stable. Actuators is a two-cylinder, transmission of gear and rack, rotary output, smooth installation, inflatable fast, full-stroke speed. Pneumatic actuators can adopt the double-acting and single acting (spring return), which is determined by the user. The LQW800S maximum advantage of Jacket rod eccentric flap valve is that the valve plate and valve seat is sealed wholly and softly. First parallel move the opening valve plate, break away from the clack seat, then rotate, so it is not easy to scratch the sealing surface. The sealing performance is good and reliable, and have no performance of wear and tear, plus the four-link eccentric mechanism, the valve is closed and therefore the media role become more tightly; when it turns, it will quickly torn off; besides it is long life, durable than soft-sealing valve.
The main technical parameters and performance:
Body form: plane sealing type (soft seal)
Connection: flange type(RF、FF)
Structural length: GB/T12221-1989 long series
Nominal pressure: JB/T81-1994 PN0.25Mpa ANSI150LB
Jacketed heat pipe flange standard: JB/T79.1-1994 PN1.6Mpa
Flow characteristics: fast open type
Mm nominal diameter: BN150-DN1600