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valve will close when the solenoid is de-energized, or high reservoir level is reached), fully <br /> closed limit switch, valve position indicator, strainers, pressure gauge, and miscellaneous <br /> piping. Limit switch shall have DPDT rated for 10 amps, Nema 4 enclosure. Limit sw!tch shall be <br /> Allen Bradley 802X, Micro Switch OPD-AR, Square D or equal. Valve shall be hydraulically <br /> operated, spring-loaded diaphragm actuated, rated for 150 psi and 8,500 GPM, <br /> A. Connections: Flanged 150 pounds ANSI. All repairs shall be possible without <br /> removing the main valves from the line. Valve and control assembly completely <br /> piped and ready for installation and wiring. <br /> B. Pressure Gauges: Pressure taps and gauges shall be provided on the upstream <br /> and downstream sides of the control valve. Pressure gauges shall be 4'/z-inch <br /> size, 0 to 100 psi range, stainless steel case, safety glass, weather proof, bronze <br /> tube and brass socket, industrial grade stainless steel movement with brass <br /> hairspring, 1.5% accuracy, and 1/2-inch NPT lower connection. Supply with <br /> 1/2-inch brass gauge cock. <br /> C. Materials: The valve shall have a ductile iron body with stainless steel trim. <br /> Valves shall be epoxy coated interior and exterior. Interior coating shall be <br /> NSF-61 approved, suitable for drinking water, synthetic rubber diaphragm. <br /> D. Manufacturer: The valve shall be a Singer Valve model 106-A2-R-SC/NC-AC, or <br /> equal. <br /> E. Inspection and Field Adjustment: An authorized service representative of the <br /> manufacturer of the altitude valve shall be present at the site for a minimum of <br /> one-half day to witness and assist in the installation and adjustment, and to <br /> certify in writing that the valve and appurtenances have been properly installed, <br /> aligned, adjusted, and readied for operation: <br /> 2.08 2-INCH COMBINATION AIR VALVES (CAV) <br /> Combination air valves for water service shall be single-body construction. Combination air <br /> valves shall have a small venting orifice to vent the accumulation of air and other gases with the <br /> line or system under pressure and shall have a large venting orifice to permit the release of air <br /> as the line is filling or relieve the vacuum as the line is draining or is under negative pressure. <br /> Valve shall have a two-inch inlet and outlet unless otherwise shown and designed to have a <br /> small 3/32-inch venting orifice. Body and cover, cast iron; float and trim, stainless steel; seat, <br /> Viton or Buna-N. <br /> Air valves for the transmission main shall be installed as shown on plan. Provide return vent <br /> pipe turned 180 degrees downward. Isolation valves shall be provided below each air valve. <br /> Manufacturers and Products: APCO Valve and Primer Corp. Model 145C; Val-Matic Valve, <br /> Model 202C; or equal. <br /> 2.09 FIRE HYDRANTS (NOT USED) <br /> 2.10 BALL CHECK VALVES <br /> July 2007 Division III-164 NEI Phase II Water and Sewer <br /> CIP Nos. 7468, 7589, 7590 <br />