Flange Type Double-eccentric Butterfly Valve

Flange Type Double-eccentric Butterfly Valve

A butterfly valve is classified to the quarter-turn valves. The butterfly valve is given the name "butterfly" because the metal disc is mounted on a rod just like the sojourn of the real butterfly. When the valve is closed, the disc is turned so that it completely blocks off the passageway. The on and off of disc determines the fluid flow.

Flange type double-eccentric butterfly valves are throttling valves used to control flow in a piping system. They have a double offset design connected by the flanged ends. In most cases, the flange type double-eccentric butterfly valves consist of the body, seal, gasket, seat and shaft and so on. Different types of the flange type double-eccentric butterfly valves hold the corresponding working temperature and pressure according to their specifications.

Flange type double-eccentric butterfly valves are the isolating valves for both liquids and gas application. The flange type double-eccentric butterfly valves are generally designed with a slightly double eccentric shaft when initiating the rotary opening movement. And the seat ring will be off-seated after only a small degree, which ensures the sealing ring is unstressed and lower wear. Besides, the flange body is made of iron or fabricated steel. It can be design to meet a variety of standards.