Seat Materials for Butterfly Valve

A Butterfly valve is a quarter-turn rotating motion valve that is utilized to stop, direct, and start the stream. Butterfly valves are a quick action type valve. A 90° revolution of the handle can totally close or open the valve.

Typically, they are utilized in a system where a positive shut-off isn’t needed. In this article, you will find out the sorts of seat material for the butterfly valve.

Butterfly valves are available in metal-to-metal seated, delicate soft seated, or with a completely lined body and disc.

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The disc of the butterfly valve can be concentric or offbeat with the valve body. There are three distinct arrangements of action of the plate concerning a focal point of the valve body.

Big sized Butterfly valves are normally furnished with a gearbox type actuator, where the handwheel is associated with the stem by means of a gearbox. This will decrease the force and yet lessen the speed of the operation.

This kind of valve ought to be introduced in the vacant position. In the event that the valve is shut during establishment, the rubber seat will wedge against the valve disc and make it hard to open.

Metal to Metal Seated Butterfly Valve

The metal to metal seated butterfly valves have a metal disc with a metal seat. This arrangement generally is seen with a triple offset butterfly valve.

This design is highly recommended for high-temperature applications. This metal to metal seat has also some limitations like metal can’t bear moisture for a long time and also not suitable for highly effectual chemicals.

Soft Seated Butterfly Valve

There are some limits to every element on this planet. The metal seated butterfly valve can’t bear effectual chemicals and is also not suitable for beverages.

So the engineers designed the soft seated butterfly valves, which have a metal disc with a soft seat to ensure the tight shutoff.

Mostly used in the Chemical and petrochemical industry, Colouring, Varnish, Dyeing factories in the Food Industry, and also used in Water/Sewage systems.

There are also soft seated fully lined body and disc butterfly valves available in the market. Generally, PTFE has been used in the soft seated valves.

Aira Euro Automation leading Butterfly Valve manufacturer in India. They have a broad range of manual and pneumatic rotary actuator operated butterfly valve.