Wafer butterfly valve and Double Flange butterfly valve are two common types of butterfly valves. Both types of valves are rubber seated butterfly valves. The application range of the two kinds of butterfly valves is very wide, but there are many friends can not distinguish between the wafer butterfly valve and the flange butterfly valve, do not understand the difference between the two.
The wafer butterfly valve features a compact and lightweight design, making it very easy to install and operate. Its wafer-style configuration allows for quick and easy installation between flanges, making it ideal for tight space and weight-conscious applications. Due to the low torque requirements, users can easily adjust the valve’s position to precisely control flow without stressing the equipment.
What is the difference between wafer butterfly valve and flange butterfly valve?
The wafer and flange of the butterfly valve are two connections. In terms of price, the wafer type is relatively cheaper, the price is roughly 2 / 3 of the flange. If you want to choose the imported valve, as far as possible with the wafer type, cheap price, light weight.
The length of the wafer concentric butterfly valve bolt is long, and the construction accuracy requirement is high. If the flange on both sides is not right, the bolt will be subjected to a large shear force, and the valve is easy to leak.
The wafer valve bolts are generally long. Under high temperature conditions, the bolt expansion may lead to leakage, so it is not suitable for large pipe diameter under high temperature conditions. And the wafer butterfly valve is generally can not be used for the end of the pipeline and the downstream need to be removed, because when the downstream flange is removed, the wafer valve will fall down, this situation must be done in another short section to remove, and the flange butterfly valve does not have the above problems, but the cost will be relatively high.
There are no flanges at both ends of the wafer butterfly valve body, but only a few guide bolt holes. The valve is connected to the flanges at both ends with a set of bolts / nuts. In contrast, it is more convenient to remove, the valve cost is low, but the disadvantage is that one sealing surface problems, both sealing surfaces have to be opened.
Flange type butterfly valve valve body at both ends of the flange respectively have a flange, connected with the pipe flange, the seal is relatively more reliable, but the cost of the valve is relatively high.
Besides, TWS Valve, also know as Tianjin Tanggu Water Seal Valve Co., Ltd, is a technologically advanced elastic seat valve supporting enterprises, the products are elastic seat wafer butterfly valve, lug butterfly valve, double flange concentric butterfly valve, double flange eccentric butterfly valve, balance valve, wafer dual plate check valve, Y-Strainer and so on. If you are interested in these valves, please feel free to contact us. Thank you so much!
Post time: Dec-20-2023
