China Butterfly Valve Supplier

Haiying is an industrial butterfly valve manufacturer offering four types of butterfly valves. Our valve factory in China supplies metal sealed and high performance butterfly valves for high pressure industrial applications.
Haying is also a supplier of both double and triple eccentric butterfly valves. The double eccentric type is commonly used in power generation and petrochemical applications, while the triple eccentric type is used in more demanding industrial applications.
The butterfly valve is part of the angular travel valve family. It gets its name from its butterfly-shaped disc, which acts as a gate to open or close the valve. The butterfly valve is similar in appearance to a ball valve. The advantages of the Haying butterfly valve include reliability, ease of operation and the need for less maintenance.

All you need to know about butterfly valves

The flap of a butterfly valve acts as a gate to open or close the flow path. The design gives the valve bi-directionality. For many industrial applications, the hydraulic system is responsible for opening and closing the valve.

Due to the light weight and low cost of this valve, it is often used by industries that require fluid control. In addition, many industries prefer this valve because of its small size and ease of operation and maintenance. The butterfly valve can be operated manually, pneumatically or electrically.

What are butterfly valves used for?

Butterfly valves are found in almost all industries where flow control is required. These may be as follows.
Irrigation
Oil industry
Compressed air services
Agricultural industry
Cooling and recycled water
Wastewater industry
Corrosive applications
Fire protection
Slurries

How do butterfly valves work?

The butterfly valve is mainly used as a control valve. When the valve needs to be opened, a thin disc in the middle moves sideways; it is perpendicular to the bore and the stem moves in the same way as the disc.

This disc is almost the same size as the inner diameter of the piper. When the valve is closed, the piper and stem move sideways again.  Throttling occurs when the flow control section of the valve is partially open

Types of butterfly valves by valve body design

Buttress Butterfly Valves
The butt-clamp type is the economical choice for butterfly valves. In detail, O-rings and gaskets seal the pipe valve to the pipe flange. Bolts attach the valve to the pipe flange. There may be flange holes in the body; however, this is not standard as other designs do not have these. This connection is more suitable for systems that resist differential pressure in both directions and are more susceptible to backflow.
Lug butterfly valve
This type of design has lugs that connect to the valve body. Dead end connections are a common use for this type of butterfly valve.

Butterfly valves with ball valves

Butterfly valves and ball valves are the two most commonly used angle travel valves. Both are popular in industrial applications; however, there is little difference.

Butterfly valves are cheaper and easier to install than ball valves. However, butterfly discs are complimentary. Cleaning requires some effort due to the design. Ball valves have an advantage over butterfly valves in terms of their ability to withstand high pressures and temperatures.

In addition, ball valves have a low pressure drop which cannot be replicated by butterfly valves. On the other hand, butterfly valves have fewer body parts and less space to trap debris. It is also important to emphasise that ball valves are unable to do one of the things that butterfly valves excel at - throttling