Complete Compiled Specification.pdf - Peck Ormsby Construction

NOTE: Valves 4" and smaller shall be equipped with the proper size 10 position Multi-lock hand lever. Valves 5"
and larger shall be equipped with the proper size Extra Power Manual weather proof gear operator.
Ball Valves:
For cold domestic water service: Valves 2" and smaller shall be Apollo 70-100 bronze, screwed, 200# WOG,
Gem ball valve with Buna-N rubber capsule. Watts B6000 or Apollo 70-100.
For chilled water service as isolation or balancing valves: Valves 2" and smaller shall be Apollo 70-100, bronze,
screwed, 200# WOG, Hydro Gem ball valve with EPT Nordel capsule. (If solder-joint ball valves are desired,
use Apollo 70-200). NOTE: Valves must be suitable for temperature and pressure required in the individual
application.
Strainers:
Strainers 2" and smaller shall be Style "T", iron body, screwed Y-pattern, 200# WOG, sediment separators with
a 20-mesh Monel screen.
All strainers shall be installed with fine mesh supplementary "construction screens" which shall remain in place
while the system is flushed and chemically cleaned. The "construction strainer" basket shall be removed just
prior to balancing the water systems.
Provide blow-down ball valve on all strainers same size as strainer tapping. Apollo 78-100.
NON-SLAMMING OR SPRING LOADED CHECK VALVES:
Types: Provide valves of the fully guided or cone-and-diaphragm types.
Bodies: Provide flanged or wafer type bodies constructed of cast iron ASTM A 126, Class B; cast steel ASTM A
216/A 216M, Class WCB; stainless steel, Type 304 or cast bronze ASTM B 61.
Trim: Seats, discs and springs shall be constructed of 18-8 stainless steel or bronze complying with ASTM B 62.
Seats may be of elastomers suitable for 250 degrees F. minimum continuous working temperature or not less
than 50 degrees F. above the operating temperature of the system, whichever is higher.
Mating Surfaces: Mating surfaces of closure faces shall be bronze or Type 316 or 17-4PH stainless steel or
elastomer approved for the particular service and materials must be compatible to prevent electrolytic action.
Pressure Loss: Pressure loss through the valves, measured in feet of water, shall not exceed 6/10 of the water
velocity in feet per second.
Bubble-Tight: Non-slamming and spring loaded check valves shall provide bubble-tight shut-off when handling
water up to 250 degrees F. and 125 pounds per square inch differential pressure. Design shall prevent rubbing
of seat materials when opening and closing. Poppet valves shall have conical springs.
GENERAL DUTY VALVES & SPECIALTY COCKS:
Cocks:
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SEGO LILY ELEMENTARY SCHOOL CLASSROOM ADDTION March 2, 2009
BASIC MATERIALS & METHODS 15050-10