Medical Air Systems Inc., specializes in medical gas equipment

Features

•	18 Gauge Steel Valve Box.
•	Substantially Dust -Tight.
•	Full Port Valves For High Flow.
•	Factory Installed Copper Tubing Extensions.
•	Stackable" Design For Up To Six 2-Inch Valves.
•	Decorator Frame Design For Improved Appearance.
•	Available With or Without Gauges.
•	Complies With NFPA 99 requirements
•	Cleaned For Oxygen Service

Medical Air Systems Inc., specializes in zone valve box assemblies

Discription

Zone valve boxes shall be constructed of 18-gauge sheet steel with air-dried lacquer finish. The cover frame shall be made of anodized aluminum and attached to the box by concealed 1 1/2-inch (38mm) screws. The finished assembly shall be substantially dust-tight. The frame assembly shall be capable of adjusting for variances in wall thickness up to one inch. The frame assembly shall contain an easily removed cover window with pull ring. The window shall conceal exposed piping and valves within the box and shall be labeled "Caution — Medical Gas Shut-Off Valves — Close Only In Emergency". Clear viewing space shall be provided in the window to display the gas service, the area controlled by the valve, and pressure gauges on units so equipped.

Double and triple valve boxes shall be designed to accept factory installed valve sizes through 2 inches. Where more than 3 valves are indicated on the plans, installer shall stack boxes using steel straps and screws provided by the manufacturer. Frames for all valve boxes shall have uniform width for balanced appearance. Manufacturer shall provide color-coded self adhesive gas service labels for compliance with NFPA 99 labeling requirements. The installing contractor shall apply labels to each valve within the assembly for proper gas service identification according to the manufacturer’s instructions. Placement of the valve within the zone valve box shall be such that the removable window cannot be replaced when any valve is closed. Factory installed type K copper pipe extensions shall extend three inches outside the valve box. Design of the valve box shall be such that valves may be removed prior to brazing, without disassembly of the box, to permit field re-arrangement of valves if necessary. Valves shall be ball type, cleaned for oxygen service, supplied with capped ends, and shall operate full open to closed position with 90° handle rotation. Refer to Medical Gas Valve specifications).

Gauge model zone valve assemblies shall include 1 1/2" pressure gauges with decorative ring reading 0-100 psig for oxygen, nitrous oxide, air and other 50 psig working pressure gases; 0-300 psi for nitrogen, and 0-30" Hg for vacuum or evacuation vacuum. The gauge port shall be equipped with removable plug for pressure testing prior to final assembly of gauge.

All gauge model zone valve box assemblies shall read pressure downstream and vacuum upstream of the valve per NFPA 99. Valves shall be piped left to right.