# T09 - T-ring valve with three functions: product diversion, isolation valve and pig catching station
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.
## Advantages
- Three functions in one valve
- Virtually no pressure losses
- High-quality, durable original I.S.T. quality
- Also for Ex-areas
- No residual quantities in the passage
- With pneumatic actuator
- Compact design

## Technical Characteristics
Nominal inside diameters   DN 50, DN 80, DN 100 (DN 150 on request)     Flanges   meet DIN or ANSI standards     Pressure   up to PN 16, 150 lb. (others on request)     Temperature   up to + 90°C, higher temperatures on request     Material   cast steel or cast stainless steel body     Seal   NBR, FKM (others on request)     Pneumatic cylinder   for 6 bar of instrument air, with spring return     Optional extras   pig sensor, pig locator