SECTION 033000 - CAST-IN-PLACE CONCRETE

Sludge Treatment Project Engineered Container Retrieval and Transfer System December 2011
3. Sprinkler Control and Isolation Valves. Manually operated sprinkler control valves shall
be outside stem and yoke (OS&Y) or indicating butterfly type and shall be listed or
approved for use with a fire protection system.
4. Check Valves. Check valve 2 inches and larger shall be listed in UL Bld Mat Dir or FM
P7825a and FM P7825b. Check valves 4 inches and larger shall be of the swing type
with flanged cast iron body and flanged inspection plate, shall have a clear waterway
and shall meet the requirements of Manufacturers Standardization Society of the
Valve And Fittings Industry (MSS) SP-71, Standard for Gray Iron Swing Check
Valves, Flanged and Threaded Ends, for Type 3 or 4 valves.
H. Joining Materials
1. Welding Materials. Comply with Section II, Part C, ASME Boiler and Pressure Vessel
Code for welding materials appropriate for the wall thickness and chemical analysis of
the pipe being welded.
2. Gasket Materials. Thickness, materials and type of gasket shall be suitable for fluid or gas
to be handled, and design temperatures and pressures.
2.4 ALARM CHECK-VALVE ASSEMBLY.
Assembly shall include an alarm check valve, standard trim piping, pressure gauges, bypass, retarding
chamber, testing valves, alarm bypass valve, main drain, and other components as required for a fully
operational system.
2.5 WATERFLOW ALARM
A. Water Motor Gong. Mechanically operated, exterior-mounted, water motor alarm assembly
shall be provided and installed in accordance with NFPA 13. Water motor alarm assembly
shall include a body housing, impeller or pelton wheel, drive shaft, striker assembly, gong,
wall plate and related components necessary for complete operation. Minimum 3/4 inch
galvanized piping shall be provided between the housing and the alarm check valve. Drain
piping from the body housing shall be minimum 1 inch galvanized and shall be arranged to
drain to the outside of the building. Piping shall be galvanized both on the inside and
outside surfaces.
2.6 ALARM INITIATING AND SUPERVISORY DEVICES
A. Sprinkler Pressure (Waterflow) Alarm Switch. Pressure switch shall include a metal housing
with a neoprene diaphragm, SPDT snap action switches and a 1/2 inch NPT male pipe
thread. The switch shall have a maximum service pressure rating of 175 psi. There shall be
two SPDT (Form C) contacts factory adjusted to operate at 4 to 8 psi. The switch shall be
capable of being mounted downstream of the retard chamber.
B. Valve Supervisory (Tamper) Switch. Switch shall be suitable for mounting to the type of
control valve to be supervised open. The switch shall be tamper resistant and contain one
set of SPDT (Form C) contacts arranged to transfer upon removal of the housing cover or
closure of the valve of more than two rotations of the valve stem.
Contract 44577 KW Annex - Rev. D 44577-CSI-SPEC-001 211313 - 9