WAFER TYPE CONCENTRIC BUTTERFLY VALVE

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MstnLand's series of wafer type sewage concentric butterfly valves are widely used in water supply and drainage, building fire protection and other systems, especially in the fire pipeline and can be used in noncorrosive medium pipeline or equipment, for closure, connection and flow regulation.

Specifications

Downloads

Wafer-type butterfly valves are designed with 2 or 4 non-tapped centring holes around the valve body that align with the connected pipeline. The flange bolts are inserted through the bolt holes of the two pipe flanges and the centering holes of the butterfly valve. By tightening the flange bolts, the pipe flanges are pulled towards each other and the water butterfly valveis clamped between the flanges and held in place. It's designed to clamp between two flanges in your pipeline. And cannot be used as pipe ends or end-of-line service. Lug-type butterfly valves have multiple threaded tapped lugs (also called "ears") over the entire circumference of the body. Each 2 sets of bolts connect to pipe flanges to each side of the bolt inserts without nuts. It suitable for end-of-line service under normal conditions.

Things To Know About Concentric Butterfly Valve for Sale

What is a concentric butterfly valve?

Concentric butterfly valves are most basic butterfly valve design is commonly called a concentric or resilient-seated butterfly valve. In this valve type, the stem is centered in the middle portion of the valve disc, which is centered in the pipe bore. The valve conventionally has a rubber seat and relies on the disc having a high level of contact with the seat for an effective seal. During the 90 degrees rotation, the disc will contact the seat the earliest. They are designed with an excellent bi-directional sealing function and zero leakage well suited for tight shutoff and regulation of diverse mediums.

Concentric butterfly valve vs eccentric butterfly valve

Concentric butterfly valves are widely used in water treatment and other industries, because of it's advantages: light weight, small size and easy for installation, low cost. But thanks to it's design, it's limited in many cases, and offset/eccentric butterfly valve could help. Below are some basic difference between concentric butterfly valve and eccentric/offset butterfly valve.

You could easily distinguish them from the appearance, because all the total different design structure.

Internal Different.

The advantages and disadvantages are apparently, and very easy to choose which one to use for a real condition. When the pressure is high, or requires a high temperature, must used a eccentric butterfly.

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