Model P63

Root ValvesAnderson Greenwood

An integral one-piece double block and bleed root valve assembly for primary isolation of pressure take-offs, with screwed or welded connections

Suitable for double block and bleed applications on pressure and flow measurement services where the valve is either screwed or welded directly into the process pipe or vessel without the need for a flanged connection. Instruments may be mounted directly to the valve outlet or remotely with gauge lines/impulse pipe work.

  • One-piece forged body combines a compact design with strength and reduced potential leak paths compared to conventional designs.
  • Threaded or welded inlet connection allows direct connection to a pressure vessel without the need for a flanged connection.
  • Camlock safety feature on threaded outlet connections prevents accidental loosening in service.
  • Primary isolation ball valves are precision machined and super finished for high performance pressure and temperature ratings. Designed to be fire safe and anti-static.
  • Heavy duty needle type globe valve, graphite packed as standard, ensuring bubble-tight shut-off on venting port.
  • Bolt-on outlet option allows choice of connections for dual instrument mounting.
  • Firesafe design to meet API 607, BS6755 Part 2 (optional).

Technical Data


Root Valves









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