A-A-54040
The envelope size of the regulator shall not exceed 4 inches by 4 inches by 6 inches. The supply oxygen shall be internally filtered, stopping all particles larger than 25 microns.
In addition to requirements herein, the regulator and components shall be in accordance with CGA E-7. Also any materials of construction in contact with oxygen shall be resistant to the action of oxygen and these materials shall be in conformance with requirements of UL 252.
The regulator shall provide an internal port to supply oxygen to the flow controller. The flow controller outlet port shall be CGA, V-5, No. 1240 barbed end to accept 1/4 inch ID tubing. The flow controller shall have a selectable flow control which is marked to provide 2, 4, 6, 10, and 15 LPM flows. There shall be zero (0) leakage at the flow controller outlet port when it is set to zero/off position and the regulator is supplied with 2000 psig.
The two 50 psig outlet ports shall be DISS, V-5, No. 1240, 9/16 inch male threads.
Either single stage or two stage pressure reduction is acceptable and either piston or diaphragm design is acceptable.
The regulator shall have a safety relief valve which shall prevent outlet pressure in excess of 100 psig in the event of regulator failure. A safety relief valve which operates at an outlet pressure above the set outlet pressure and below 100 psig is acceptable.
The gauge shall be 1-1/2 inch diameter with a rubber bumper to protect it from shock. The gauge shall indicate the cylinder pressure and be calibrated in psig and Kg/cm2 (or Kpa). The gauge shall be marked to indicate a full cylinder tank at tank pressure of approximately 1900 psig. In addition to CGA-E7 requirements of ANSI B40.1, the gauge shall have a minimum accuracy of grade B as defined in ANSI B40.1, shall have a range of 0-4000 PSIG, and shall be in accordance with UL 404.
The yoke shall be integral with the regulator and be pin-indexed for Size D and E medical oxygen cylinder valve in accordance with CGA, V-1, No.870.
The regulator, with all components, shall be packaged in a closed plastic bag to prohibit dust collection.
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