Specifications

RDNO ATHLETIC PARK
AMENITIES BUILDINGS
WE File No.029042.00
May 30, 2014
20 | P a g e
.4 Long radius type for elbows and return bends.
34.6 Joints
.1 Brazing materials shall be SIL-FOS-15 phosphor-copper-silver alloy for copper
piping jointed by copper fittings and silver solder for brass fittings.
.2 Flexible connections: 3/8” nominal or less shall be made using coiled soft copper
tubing. For larger sizes, use seamless flexible bronze hose with bronze wire braid
covering. Use factory sealed neoprene jacket unit where freezing may occur.
34.7 Shut-Off Valves:
.1 Line size; selected for low pressure drop.
34.8 Solenoid Valves:
.1 With field replaceable coil, serviceable without removing valve from line.
.2 Coil voltage to suit field requirements.
.3 Provide upstream of thermostatic expansion valves.
.4 Acceptable Products: Alco 240 RA series.
34.9 Expansion Valves:
.1 Thermostatic type with external equalizer, adjustable superheat setting, capacity and
bulb charge to suit operating conditions.
34.10 Water Regulating Valves:
.1 Pressure activated two-way straight-through type.
.2 For three-way regulators, install balancing valve in by-pass, adjusted to maintain
constant system flow rate irrespective of valve position.
34.11 Charging and Purging Valves
.1 Valves to be the same size as line size into which they are connected or ½”
whichever is the larger.
.2 Valve complete with a removable seal cap chained to the valve body.
.3 Acceptable Products: Henry Standard type, Mueller Linemaster Special.
34.12 Sight Glass
.1 Provide sight glass in liquid line following filter drier.
.2 Sight glass shall be combination moisture-liquid indicator and with a protective
removable cap.
.3 Sight glass to be fitted in-line.
.4 Acceptable Products: Henry Dri-Vue, Mueller Vuemaster, Sporlan See All.
34.13 Access Fittings
.1 Provide Schraeder access fittings in each suction connection from an evaporator,
located adjacent to the superheat sensing element of the expansion valve.
.2 Fittings to be used for checking the superheat of the suction gas.
.1 Access fitting shall be soldered into a tee and shall be complete with a quick-
seal cap.
34.14 Filter Drier
.1 Provide a filter drier in the liquid line from the condenser. Shut-off valves shall be
installed on each side of drier and sight glass.
.2 Filter drier shall be selected to have a pressure drop of not more than 13 kPa [2
psig] when passing 150% of the system flow rate.
.3 Removable core with flare connections.
.4 Acceptable Products: Alco Extra-Klean, Catch-All, Henry Dri-Cor, Mueller
Drymaster II, Sporlan.
34.15 Flexible Connections
.1 Braided tin-bronze convoluted flexible connections.