The zone shut-offs shall be 3 piece, ball-type design with a brass forging body and a chrome plated, brass ball for sizes 1/2" to 2". Ball seats, stem seals and stem washer shall be reinforced Teflon (PTFE), with Viton stem and flange O-rings. A blow-out proof stem shall be used and the zone shut-off shall have a maximum pressure rating of 600 psi (4,137 kPa). All zone shut-offs materials shall be compatible with medical gases or vacuum service to 29" Hg (98.205 kPa). Zone Indicator Panel Boxes shall be an Amico Alert-1 series.Each recessed zone indicator panel box shall consist of the following components: A steel box which can house two to seven zone shut-offs with tube extensions, an aluminum frame and a pull-out removable window. Gauges are included.The indicator panel box shall be constructed of 18 gauge steel complete with a baked white enamel finish. Affixed to the opposite sides of the box will be two adjustable steel brackets for the purpose of mounting the box to the structural support. The steel bracketsshall accommodate various finished wall thicknesses between 3/8" (9.5 mm) and 1-3/16" (30 mm) and shall be field adjustable.The frame assembly shall be constructed of anodized aluminum and shall be mounted to the back box assembly by standard 6 3/8" tapping screws as provided. The removable front shall consist of a window with a pull-out ring pre-mounted to the center of the window.Access to the zone shut-offs shall be by merely pulling the ring assembly to remove the window from the frame. The window can be reinstalled without the use of tools only after the shut-off handles have been returned to the open position.The window shall be marked to prohibit unauthorized people from tampering with the zone indicator panel with the following silk-screen caution:MEDICAL GAS CONTROL VALVES CLOSE ONLY IN EMERGENCYThe zone shut-offs shall be 3 piece, ball-type design with a brass forging body and a chrome plated, brass ball for sizes 1/2" to 2". Ball seats, stem seals and stem washer shall be reinforced Teflon (PTFE), with Viton stem and flange O-rings. A blow-out proof stem shall be used and the zone shut-off shall have a maximum pressure rating of 600 psi (4,137 kPa). All zone shut-offs materials shall be compatible with medical gases or vacuum service to 29" Hg (98.205 kPa).Zone shut-offs shall be operated by a lever-type handle requiring only a quarter turn from a fully open position to a fully closed position. All zone shut-offs shall be equipped with type K washed and degreased copper pipe stub extensions of sufficient length toprotrude beyond the sides of the box.Each shut-off shall be supplied with an identification bracket which shall be riveted to the zone indicator panel box for the purpose of applying an approved medical gas identification label. A package of labels shall be supplied with each Zone Indicator Panel box assembly for application by the installer.Amico products comply with NFPA 99.
