Amico Automatic Cryogenic Liquid Solenoid Manifold - Manual (Page 9)

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DUAL LINE REGULATOR
On every Amico Automatic Gas Manifold the line regulator is capable
of maintaining a constant dynamic delivery of pressure at the
maximum designed flow rate of the system. For Oxygen, Nitrous
Oxide and Carbon Dioxide service, the line regulators are factory preset
at 55psi and for Nitrogen at 170psi.
LINE REGULATOR BALL VALVE
Quarter-turn ball valves are provided upstream and downstream of each
line regulator. These valves allow for removal and servicing of one of the
line regulators while the other is in use. All four ball valves are normally in
the open position.
Description of Parts
Pressure relief valves are installed downstream of all pressure regulators
and are set at no more than 50% above the setting of the pressure
regulator. Relief valves are capable of fully relieving the pressure at
the set point. All pressure relief valves in the manifold have piping
connections to allow for connection of a vent line to the outside of
the facility.
PRESSURE RELIEF VALVE
FRONT PANEL INDICATORS
Six front panel indicators monitor the status of the manifold.