Line blind valve is a kind of gate valve that cuts off gas medium manually, electrically or pneumatically or hydraulically. It is generally divided into electric blind valve, hydraulic blind valve, closed plug valve and electric open blind valve.

Basic Structure

Line blind valve is composed of left and right valve bodies, telescopic movement mechanism, fan-shaped valve plate, electric control push rod Ⅰ for driving the valve plate, and electric push rod Ⅱ for clamping and loosening.

Principle Introduction

Line blind valve has three driving devices, including two manual clamping or loosening devices, and an electric device for opening or closing the gate. When opening or closing the gate, first loosen the two manual devices, and then start the electric device to open or close the gate (special note: the electric device is allowed to open only after the two manual devices are released). After the gate is opened or closed, the two manual devices are clamped, and the pipeline can work.

Features

Line blind valve, also known as spectacle valve, electric disc valve, is mainly composed of left valve body, right valve body, sector gate, stainless steel bellows, electric transmission device, electric clamping device and other components. The valve body adopts a three-point locking sector gate structure. The sealing adopts stainless steel and rubber sealing ring, which has good sealing performance and long service life. The sealing ring is installed on the gate plate, which is convenient for maintenance and replacement. Line blind valve is operated electrically, with stable operation, flexible start and reliable action.