Complete Compiled Specification.pdf - Peck Ormsby Construction

2) Fittings: wrought copper, solder joint type
3) Joints shall be soldered with silver solder, 45% silver, 15% copper, 16% zinc, 24%
admium, solidus at 1125ø and liquids at 1145ø F.
F. Gate Valves:
1) Gate valves 3" and smaller shall meet the following requirements.
a. Gate valve shall be 125 lb. SWP bronze gate valve with screw-in bonnet,
non-rising stem, and solid wedge disc.
b. Gate valve shall have threaded ends and shall be equipped with a bronze
handwheel.
c. Gate valve shall be similar to those manufactured by Nibco or approved
equal.
2) All gate valves shall be installed per installation details.
G. Quick Coupling Valves:
1) Quick coupling valves shall have a brass, one or two-piece body designed for
working pressure of 150 P.S.I.
2) Quick coupling valve shall be operable with a quick coupler key. Key size and type
shall be as shown on the Drawings.
3) Quick coupling valves used on domestic water systems shall be equipped with a
thermoplastic rubber cover yellow in color.
H. Back flow Prevention Unit: (Domestic Water Systems Only)
1) Back flow prevention unit shall be of size and type indicated on the irrigation
drawings. Install backflow prevention unit in accordance with irrigation
construction details.
2) Wye strainers at backflow prevention units shall have a bronzed screwed body with 0
mesh monel screen and shall be similar to Bailey #100B or approved equal.
3) All pressure main line piping between the point of connection and the backflow
preventer shall be installed as required by local code. The Contractor shall verify
with the local governing body as to material type and installation procedures prior to
start of construction. Submit shop drawing for approval.
I. Check Valves:
1) Swing check valves 2" and smaller shall be 200 lb. W.O.G. bronze construction with
replaceable composition, neoprene or rubber disc and shall meet or exceed Federal
Specification WW-V-51d, Class A, Type IV.
2) Anti-drain valves shall be of heavy duty virgin PVC construction with F.I.P. thread
inlet and outlet. Internal parts shall be stainless steel and neoprene. Anti-drain valve
shall be field adjustable against draw-out from 5 to 40 feet of head. Anti-drain valve
shall be similar to the Valcon "ADV" or approved equal.
J. Control Wiring:
1) Wiring shall occupy the same trench and shall be installed along the same route as
pressure supply or lateral lines wherever possible.
2) Where more that one (1) wire is placed in a trench, the wiring shall be taped
together at intervals of ten (10) feet.
3) An expansion curl shall be provided within three (3) feet of each wire connection.
Expansion curl shall be of sufficient length at each splice connection at each electric
control, so that in case of repair, the valve bonnet may be brought to the surface
without disconnecting the control wires. Control wires shall be laid loosely in trench
without stress or stretching wire conductors.
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SEGO LILY ELEMENTARY SCHOOL CLASSROOM ADDITION MARCH 2, 2009
UNDERGROUND IRRIGATION SYSTEMS 02810-6