Importance

Loading Importance Indicators...

Abstract

An improved pinch valve construction which curtails and prevents end leakage where the valve is joined between two sections of duct or conduit; the valve is especially adapted for usage in large-sized piping such as ducts or conduits having diameters from 8 to 12 feet which carry bulk fluids such as drinking water, raw sewage, etc. The pinch valve configuration has end fittings which are a combination of elements including a clamping ring, which permit the easy fabrication and assembly of the valve components and eliminate the need for costly tooling and castings; standard sized components can be used. The present pinch valve construction is cheaper and better than prior art pinch valves, being less susceptible to leakage, and is readily installed and repaired. Positive control and modulation of fluid flow is attained, and the overlapping ends of the pinch valve members, which straddle the ends of the duct or conduit, assure a strong and fluid-impervious joint.

Loading the Abstract Image...

First Claim