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Using the 3-valve manifold
In normal operation the "isolate" valves are open while the "equalize" valve is closed.
This provides a differential pressure reading to the pressure gauge or transmitter. To zero the instrument, first close the downstream "isolate" valve then open the "equalize" valve and adjust the zero setting on the instrument.

Note: The body & trim parts on all 316/316L Valves & Manifolds comply to NACE MR-01-75 & NORSOK M-650 as standard.
Direct Mount 3-Valves Manifold Model-HM8312
Direct Mount 3-Valves Manifold Model-HM8312-2
Unit of Measure
Items Direct Mount 3-Valves Manifold Model-HM8312
HM831211F8YL
Direct Mount 3-Valves Manifolds, Model-HM8312
Direct Mount 3-Valves Manifold Model-HM8312
HM831211F8HC
Direct Mount 3-Valves Manifolds, Model-HM8312
Direct Mount 3-Valves Manifold Model-HM8312
HM831211F8M
Direct Mount 3-Valves Manifolds, Model-HM8312
Direct Mount 3-Valves Manifold Model-HM8312
HM831211F8D50
Direct Mount 3-Valves Manifolds, Model-HM8312
Direct Mount 3-Valves Manifold Model-HM8312
HM831211F8TI
Direct Mount 3-Valves Manifolds, Model-HM8312
Tip N/A Hard
Packing N/A PTFE
Inlet Connection N/A Female
Inlet Size N/A 1/2" NPT
Alloy N/A 316/316L N/A HASTELLOY® C276 N/A MONEL® N/A Super Duplex N/A Titanium
Weight N/A 3.52 lb1.6 kg
Maximum pressure at 212 ºF (100 ºC) N/A 6000 psi413 bar
Maximum pressure at 392 ºF (200 ºC) N/A 4000 psi275 bar
Maximum pressure at 842 ºF (450 ºC) N/A