This I.S.T. T-ring valve performs three tasks simultaneously: the branching of pipelines in the pigging system, the isolation function that prevents the product from flowing further, and at the same time the "catching" and "sending" of pigs.
It can be used both as a single valve and in manifold assemblies. Its straight passage can be pigged without dead space when the valve is closed. The T-branch is isolated by the ring-shaped closure when required.
The 100% pressure relief of the ring facilitates operation: In many cases only a small pneumatic cylinder is needed. The product flow is diverted with virtually no pressure loss.