substitution request - Alliance Construction Solutions

B. Shock Arresters – Bellows Type: Stainless steel casing and bellows, rated for 250 psi,
200ºF, tested and certified in accordance with PDI Standard WH-201.
C. Shock Arresters – Piston Type: 60 psi precharge, sealed from system water with free
sliding piston and EPDM O-rings, threaded connections, and suitable for up to 150 psi
and 180°F.
D. Pressure Reducing Valves – Direct Acting:
1. Low and Medium Capacity (15 to 120 GPM): All-bronze pressure reducing valve,
with sensitive spring and diaphragm for accurate pressure control, manual
adjustment for outlet pressure, integral strainer, and female thread connections.
See detail on mechanical plans for size, capacity and piping arrangement.
Watts Model UB5
Watts Model N223BS
2. High Capacity (50 to 1800 GPM): Epoxy-coated cast iron body pressure
reducing/sustaining valve, with stainless steel seats; sensitive spring and large
Buna-N diaphragm area for accurate pressure control; pilot valve with manual
adjustment for outlet water pressure; female thread connections for sizes up to 2-
1/2” and flanged connections for sizes 3” and larger. Provide in-line inlet water
strainer, inlet and outlet valves, and threaded or flanged connections for easy
valve removal. See detail on mechanical plans for size, capacity and piping
arrangement.
Watts Model N223BS
E. Water Tempering Valves (Pressure-Equalizing with Thermometer): Concealed-type, 3-port,
all-bronze, pressure-balancing mixing valve with integral angle check stops, maximum
temperature limit stop, stainless steel balancing piston, chrome-plated finished wall plate
with hot and cold water marking, and volume control. Unit to hold temperature steady
and constant with pressure fluctuations of up to 85 percent. Unit shall have integral or
separate flush-with-wall, 3-color dial thermometer with scale from 70º F to 130º F and
chrome-plated trim ring for separate thermometer.
Watts Model L111
F. Thermostatic Mixing Valves: Exposed type, all-bronze, thermostatically-controlled mixing
valve with stainless steel piston, fail-safe automatic shutdown if either hot or cold water
pressure fails, union connection, and polished chrome finish. Valve to deliver 1 to 225
gpm at a pressure differential of 12 psi; 3 in. hot and cold water inlet pipe sizes, 3 in.
tempered water outlet pipe size.
Leonard Model TM-186 (High-Low)
G. Pressure/Temperature Relief Valves: Fully automatic, all-bronze pressure/temperature
relief valve with test lever and extension thermostatic element; temperature relief setting at
210º F and pressure relief setting at 150 psig. Valve shall meet ASME Standards and
comply with the latest AGA ratings. Relief opening to be piped to an indirect connection at
nearest floor drain.
H. Domestic Water Filter (In-Line Type): "Filtrine" Model 10-DUP-TM Duplex Water Filter with
type 304 stainless steel housing, F-13 activated carbon replaceable filter sheet, and 1”
inlet and outlet. Provide connections with dielectric unions, inlet and outlet valves, and full
size bypass with valve.
Project No.: 10145
550 15 th Street Dual Brand Hotel
03/16/2012
221119 - 5 DOMESTIC WATER PIPING
SPECIALTIES