2.1.7.4
Temperature Regulating Valves
Provide ASSE 1017 copper alloy body with adjustable range thermostat.
2.1.7.5
Water Pressure-Reducing Valves
ASSE 1003.
2.1.7.6
Plug Valves
MIL-V-12003, except that a replaceable valve seat will not be required.
[Type I - lubricated, tapered plug] [Type II - non-lubricated, lift-plug]
valves.
2.1.7.7
Flanged or butt-welding ends ball valve shall conform to MSS SP-72,
[bronze] [steel]. Threaded, socket-welding, solder joint, grooved and
flared ends shall conform to MSS SP-110.
2.1.7.8
Radiator Valves
Radiator valves shall be angle or straightway pattern, with packed or
packless bonnet shutoff globe type, designed especially for hot water
heating system. Valve shall be constructed of brass or bronze or copper
alloy conforming to ASTM specifications for materials with non-metallic
renewable disc and plastic wheel handle for shutoff service.
2.1.7.9
Flow Control Balancing Valves
Copper alloy or cast iron body, copper alloy or stainless internal working
parts, and integral pointer that indicates the degree of valve opening.
Valves shall be suitable for 862 kPa (gage) 125 psig at 87.8 degrees C 190
degrees F hot water. Valve shall function as a service valve when in fully
closed position. Valve body shall have factory-installed tappings for
differential pressure meter connections for verification of pressure
differential across valve orifice. Meter connections shall have positive
check valves or shutoff valves. Each valve shall have metal tag showing the
liters per second gallons per minute flow for each differential pressure
reading.
2.1.7.10
Conform with MSS SP-67, Type I - Tight shut off valve, and [flanged]
[screwed] [single flange] [flangeless] valve ends. Valve body material
shall be [cast iron] [steel] [bronze] and shall be bubble tight for shutoff
at 1034 kPa (gage) 150 psig. Flanged and flangeless type valves shall have
Type 300 series corrosion resistant steel stems and corrosion resistant or
bronze discs with molded elastomer disc seals. Flow conditions shall be
for the regulation from maximum flow to complete shutoff by way of
throttling effect. Valves shall be provided in [closed] [open] system.
Valves smaller than 200 mm 8 inches shall have throttling handles. Valves
200 mm 8 inches and larger shall have totally enclosed manual gear
operators with adjustable balance return stops and indicators. Valves
shall have a minimum of 7 locking positions and shall be suitable for water
temperatures up to 93 degrees C 200 degrees F.
SECTION 15185N
Page 16
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