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Fluid Controls

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Single Isolate / Vent Block

Low-pressure direct-mounting block for level measurement on atmospheric tanks, with a T-bar isolate handle and an anti-tamper vent handle.

A manifold

Single Isolate / Vent Block

Designed for low pressure application and level measurement on atmospheric tanks with differential pressure transmitters. The isolate valve has a T-bar handle and the vent valve an anti-tamper handle, so the vent cannot be opened by hand in passing.

The instrument connection is flanged for direct mounting. Process and drain / vent connections are offered as 1/4" NPT (F), 1/4" BSPT (F) or 10 mm OD tube — the smallest ports in the range, which is what suits it to atmospheric-tank level service rather than pressure hook-ups.

Four mounting bolts to IS 1364-1960 and two PTFE or Viton interface seals are supplied with the manifold.

Max working pressure
up to 620 kg/cm² body / 413 kg/cm² seat (hydrostatic test)
Body materials
A 105, A 182 Gr F 304SS, A 182 Gr F 316SS, Monel, Hastelloy
Thread systems
NPT, BSPT, Flanged
Heat-code traceable · 100% tested

Features

  • For low pressure application and level measurement on atmospheric tanks
  • Isolate valve with T-bar handle
  • Vent valve with anti-tamper handle
  • Flanged instrument connection for direct mounting
  • Process and drain / vent 1/4" NPT (F), 1/4" BSPT (F) or 10 mm OD
  • Accessory: mounting bolts 4 nos, interface seals 2 nos

Applications

  • Level measurement on atmospheric tanks
  • Low pressure differential transmitter hook-ups
  • Direct-mounted DP transmitters
Max working pressure
up to 620 kg/cm² body / 413 kg/cm² seat (hydrostatic test)
Thread systems
NPT, BSPT, Flanged
Body materials
A 105, A 182 Gr F 304SS, A 182 Gr F 316SS, Monel, Hastelloy
Temperature
PTFE gland packing as standard; Graphoil above 180 °C
Testing
Hydrostatic body 620 kg/cm², seat 413 kg/cm²; pneumatic seat 40 kg/cm², at 25 °C

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