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The main components of butterfly valve

1,179 views Source: VALTEC China Valve Manufacture CO.,LTD

A butterfly valve is a valve that uses a circular butterfly plate as an opening and closing member and rotates with the valve stem to open, close and adjust the fluid channel. There are many types of butterfly valves and they are widely used. This article, VALTECCN valve supplier, introduces you to the main components of butterfly valves.

The butterfly valve consists of only four main components: body, disk, stem and seat.

The butterfly valve consists of only four main components: body, disk, stem and seat.

Butterfly valve body: Butterfly valves generally have bodies that fit between two pipe flanges, the most common being lug and wafer body design.

Butterfly valve disk: The disk is how the valve stops flow – it is equivalent to a plug in a plug valve, a gate in a gate valve or a ball in a ball valve. There are variations in disk design and orientation in order to improve flow, sealing and/or operating torque.

Butterfly valve Stem: The stem of the butterfly valve may be a one-piece shaft or a two-piece (split-stem) design. The stem in most resilient seated designs is protected from the media, thus allowing an efficient selection of material with respect to cost and mechanical properties.

Butterfly valve Seat: The seat of a resilient-seat butterfly valve utilises an interference fit between the disk edge and the seat to provide shutoff. The material of the seat can be made from many different elastomers or polymers. The seat may be bonded to the body or it may be pressed or locked in.

For more information about butterfly valves and selecting the right part for your needs, contact VALTECCN Valve. today.

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