I have a butterfly valve that is similar to the D371X, except it’s eccentric – what is its model number? It would be best to have images

Eccentric soft seals are usually double-eccentric, but clamped types seem to be less common; generally, flanged types are of the D342X-10/16 type

This post was last edited by Glory now on 2015-12-5 22:03. You can just search for it on Baidu. Maybe we could ask this one too. I ask him about any valves I have

JBT308-2004 Valve Model Coding Method! The original poster can download and take a look! Don’t listen to people talking nonsense! D371X actually refers to a centerline rubber-lined butterfly valve. However, according to the standards, the rubber-lined butterfly valve should be D371J. 371 refers to eccentricity. 7 refers to a flange-type connection. 3 refers to a drive mechanism of worm and worm gear.

Refer to the valve model designation method JB/T308-2004: D – Valve type: Butterfly valve; 3 – Drive type: Worm gear drive; 7 – Connection type: Wafer type; 1 – Structural type: Center-mounted vertical valve plate. The valve is of the sealed type; 2 indicates double eccentricity, and 3 indicates triple eccentricity ； Non-sealed type: 7 indicates double eccentricity, 8 indicates triple eccentricity. X-Sealing material: rubber

D371X refers to a turbine-style wafer-type butterfly valve with a vertical central plate; the sealing material used is rubber. A vertical central plate butterfly valve is one in which the axis of the valve stem, the center of the butterfly plate, and the center of the valve body are all in the same position. If it is a double-eccentric butterfly valve, the model would be D372X. Double eccentricity means that there is eccentricity in two directions between the valve stem and the butterfly plate, and the sealing surface of such a valve has the shape of a right circular frustum. There are also single-eccentric butterfly valves and triple-eccentric butterfly valves, with model numbers D370X and D373X respectively. A single-eccentric butterfly valve refers to a situation where the valve stem and the valve disc are eccentric in one direction, while a triple-eccentric butterfly valve features three points of eccentricity; in addition to the eccentricity between the valve stem and the valve disc, the sealing surfaces of the valve disc and the valve seat are shaped like an inclined frustum. As for pictures, I’m sorry but I’m not able to upload them. . .