valve body, or valve ends, from the line. For sizes 65 mm 2 1/2 inches or
greater, MSS SP-72, flanged connections, bronze or stainless steel body.
Provide double-seal construction with replaceable Buna-N, neoprene, or
polytetrafluoroethylene (TFE) seat seals. Provide valves suitable for at
least 2068 kPa (gage) 300 pounds per square inch gage (psig), cold water,
non-shock working pressure.
2.1.2.2
Diaphragm Valves (Oxygen, Nitrous Oxide, and Nitrogen)
MSS SP-88, brass-bodied, packless, diaphragm type with regrindable or
renewable seats and disks capable of being disassembled in line for
servicing o-ring and seating surfaces. Provide valves suitable for at least
2068 kPa (gage) 300 psig, cold water, non-shock working pressure.
2.1.2.3
Pressure Reducing Regulators
Hospital regulators with a calibrated flow measuring device and CGA V-1
valve connections. Minimum accuracy of flow measure device shall be plus
or minus 3 percent for the intended use.
2.1.2.4
Gate Valves (Vacuum, Medical Air, and Anesthesia Gas Evacuation)
MSS SP-80 bronze, solder ends; or MSS SP-81, stainless steel, welded ends.
2.1.2.5
PVC Body Ball Valves (Oral Evacuation Systems Only)
PVC body double-seal ball valves with replaceable neoprene or TFE seat
seals. Provide valves suitable for at least 690 kPa (gage) 100 psig, cold
water, non-shock working pressure, designed especially for vacuum service.
Operating parts of valve shall be removable without removing valve from
line.
2.1.3
Specialties
2.1.3.1
Hangers and Supports
Steel adjustable type per MSS SP-58 and MSS SP-69. Provide hangers,
supports, nuts, bolts, and washers with hot-dip galvanized finish after
fabrication.
2.1.3.2
Piping Isolators
Commercial metal clad hair felt type for isolating pipe from hangers.
2.1.3.3
Pressure Gages
ASME B40.1 with restrictor, except that gages for oxygen and nitrous oxide
systems shall be manufactured and labeled expressly for the intended
service, and marked "DO NOT USE OIL." Provide gages with white dials and
black lettering, and with sizes, ranges, and case type, as indicated.
2.1.3.4
Vacuum Bottle Brackets
Stainless steel, chrome-plated metal, or aluminum with finish matching
adjacent station outlet.
2.1.3.5
Flexible Connectors
Manufactured expressly for operating conditions either annular and
SECTION 15217N
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