W1, 2, 3 series are of large capacity, light load, welded structure. Suitable for regulation of low pressure gas or liquid, high temperature styles are also available.
W1 series adopt open type of butterfly plate; W2 series plate manufactured into an oval, when the valve is closed, the plate and valve body center plane form an angle of 10 degrees, forming a self-sealing structure; for W3 series, a set of symmetrical distributed back seat rings are used in valve body.
QRM series diaphragm type and QRE series piston type quarter-turn actuator can be used with W series valve, and EMR series are electric actuator for these valve.
Body, Disc Concentric
W1: Flat type; W2: Elliptic;W3: Seat type
DN80~DN3200 / 3"~128"
20#, 304, 316
W1: 2%×Cv; W2, W3: 0.5%×Cv
W1 series opening structure;
W2 self-sealing structure;
W3 flat sealing face structure.