Flanged Butterfly Valve Main Parts Materials

secureluokai December 31, 2018

Flanged butterfly valve main parts materials include valve body, valve disc, valve seat, valve shaft materials, etc. Butterfly valve disc is a disc-shaped butterfly plate that rotates around its own axis in the valve body so as to open/close or regulate the valve. Full opening to full closing of the butterfly valve is usually less than 90°. The butterfly valve and the butterfly shaft itself are not self-locking. For the positioning of the butterfly plate, a worm gear reducer is added to the valve stem. The use of a worm gear reducer not only enables self-locking of the butterfly plate and its stop at any position, but also improves the valve’s operating performance. Special industrial butterfly valve can withstand high temperature, the applicable pressure range is also high, the valve has a large nominal diameter, the valve body is made of carbon steel, and the sealing ring of the valve plate uses a metal ring instead of the rubber ring. Large high temperature butterfly valves are manufactured by steel plate welding and are mainly used for flue ducts and gas pipes of high temperature media.
1. The flanged butterfly valve is constructed in one-dimensional eccentricity.
2. The rubber sealing ring adopts the integral embedded retaining position, so that it has a certain degree of embedded freedom. It can adjust the seal itself within a certain range. Under the impact of water flow, it does not loose, fall off, or leak. The rubber seal ring is attached to the valve disc.
3. The valve shaft is made of stainless steel and has a two-stage structure with minimal flow resistance. The bushing of the valve shaft adopts a self-lubricating bearing, which has low friction resistance during operation and does not require oiling.
4. The valve disc is a streamlined truss structure with strong rigidity and small flow resistance, and the seal ring can be replaced without removing the valve shaft and valve disc from the valve.
5. The valve pin with the US patented withdrawal structure is adopted, which will not loosen.
6. Material: valve body: Cast iron  Disc: Cast iron  Disc seal ring: Nitrile butadiene rubber NBR  Valve body seal ring: Stainless steel  Upper and lower bearings: Aluminum bronze Valve shaft: Stainless steel 2Cr13
7. Valve body exterior and interior adopts electrostatic adsorption of epoxy resin, which will not pollute the water quality.