This Specification covers manifolds, comprising two or more isolating valves and a vent valve, in an integral body, intended for the following applications:

• having an inlet directly connected to the process pipework and an outlet connection not larger than DN 50 (NPS 2), whose principal use is as a replacement for individual block and bleed valves at tapping points in piping systems.

• arrangements having an inlet and outlet directly connected to the process pipework, whose principal use is for equipment or process isolation.

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