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SHIPMENT DETAILS
The package consists of one fully tested Economy Manifold. Optional header bar assemblies and pigtails are available.
DESCRIPTION OF PARTS
The Economy manifold is divided into two main sections:
Pressure Regulators
There are two types of regulators in the Amico Corporation manifold: the operating pressure regulator and the line
pressure regulator. Both types conform to NFPA 99.
1. Operating (bank) Regulators: There are two operating regulators on every manifold, one for the left bank and one
for the right bank. For Oxygen, Nitrous Oxide, Medical Air and Carbon Dioxide service, the “In Use” regulator will be
set at 160 psi and the “Reserve” regulator will be set at 120 psi. For Nitrogen, the “In Use” regulator will be set at 250
psi and the “Reserve” regulator will be set at 200 psi.
2. Line Regulator: There is one heavy duty line regulator on every manifold. The line regulator is capable of
maintaining a constant dynamic delivery pressure at the maximum design flow rate of the system. For Oxygen,
Nitrous Oxide, Medical Air and Carbon Dioxide service, the line regulator should be set at 55 psig (379 kPa). For
Nitrogen service, the regulator is set at 170 psig (1,172 kPa).
Pressure Relief Valves
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 located immediately upstream. All pressure relief valves are capable of fully relieving
the pressure at the set point.
Pressure relief valves in the manifold have piping connections to allow for connection of vent lines to outside facilities.
Relief pressure settings vary with gas service as follows:
Oxygen
Carbon Dioxide
Nitrous Oxide
Medical Air
Nitrogen
Line Pressure Relief Valve
75 psi
(517 kPa)
75 psi
(517 kPa)
75 psi
(517 kPa)
75 psi
(517 kPa)
225 psi
(1,551 kPa)
Operating Pressure Relief Valve
350 psi
(2,413kPa)
350 psi
(2,413 kPa)
350 psi
(2,413 kPa)
350 psi
(2,413 kPa)
350 psi
(2,413 kPa)
CONTROL COMPONENTS
The Economy manifold qualifies as a “Cylinder System without Reserve Supply” as classified in NFPA 99, Clause 4-3.1.5.
This is a category of the broader classification “Central Supply System” which encompasses many types of sources of
supply to nonflammable medical gas piping systems.
Description of the Manifold
