Pages_7_and_8_35_22_14_-_Valves_and_Equipment_Revised.pdf

Silt Pumping Plant Modernization Silt Project - Upper Colorado Region Solicitation No. R16PS00121

Valves and Equipment

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2. MSS SP-110.

3. Carbon steel, full ported.

4. Female threaded ends.

5. Cold-water pressure rating: 150 psig.

E. Flanges:

1. Slip-on ring type, flat faced: AWWA C207 or ASME B16.5.

2. Flat face with a finish suitable for full face gasket for flanged joints.

F. Flange gaskets:

1. Model No. 19, manufactured by Garlock Sealing Technologies, 1666 Division Street, Palmyra NY 14522; or equal, having following essential characteristics:

a. Full flat face-type.

b. For AWWA C207 flanged joints.

c. For cold water service.

2. Correct flange face gasket surface finish.

3. Spiral or concentric serrated grooved flange face gasket surface finishes that are suitable for flat gasket material provided and for operating pressures.

G. 8-Inch Pilot-Operated Pressure Sustaining Check Valve:

1. Model No. 100-01KO as manufactured by Cla-Val, 1701 Placentia Ave. Costa Mesa, CA 92627; Model 106/S106PG by Singer 12850 87th Avenue, Surrey, BC V3W 3H9, Canada; Model 42 by Ross Valve Manufacturing Co., Inc., 6 Oakwood Ave, Troy, NY 12180; Model DPCV by GA Industries, 9025 Marshall Road Cranberry Township, PA 16066; or equal, having the following essential characteristics; or equal, having the following essential characteristics:

a. Anti-cavitation trim suitable for pressure dissipation from 150 psig to atmosphere without damaging cavitation.

b. Suitable for bolting to AWWA Class D flange.

c. ANSI Class 150 pressure rating.

d. Suitable for bolting to AWWA Class D or ANSI Class 150 flanges.

e. Suitable for cold water pressures up to 150 psig.

f. Ductile iron or cast steel, globe-style body.

g. Drip tight shut-off.

h. Diaphragm or piston operated.

i. Sealing disk: rubber, synthetic rubber, or Buna-N.

Silt Pumping Plant Modernization Silt Project - Upper Colorado Region Solicitation No. R16PS00121

Valves and Equipment

35 22 14 - 8

j. Cavitation free operation.

k. Stainless steel trim.

l. All control system components to be manufactured by the same company as the main valve.

m. Pilot piping for the valves:

1) Design, furnish, and test per manufacturer’s recommendations.

2) Hydraulic (water) operated control pilots.

3) Heavy-duty, ball-type shut off valves for isolation manually-operated pilot control system.

4) Opening and closing speed control valves.

5) Pilot “Y” strainers.

6) Check valves.

7) Atmospheric drain.

8) Pressure gauges.

9) The valve shall automatically sustain pressure upstream of the valve up to 150 psig.

10) Valve pressure sustaining settings shall be fully adjustable.

2. During valve operation, water vented from upper pressure chamber of main valve (when the main valve is opening) shall be directed into pilot piping so that it discharges into downstream side of main 8-inch valve.

3. Shop Testing.

a. In accordance with manufacturer’s recommended testing requirements.

b. Supply documentation certifying test procedure and pressures used.

H. Pressure gauges:

1. Model 213.40 as manufactured by Wika Instrument Corporation, 1000 Wiegand Boulevard, Lawrenceville, GA 30043, Ashcroft Duragauge 1279 as manufactured by Dresser Industries Instrument Division, 250 East Main Street, Stratford CT 06614; or equal, having the following essential characteristics:

a. Range displayed on pressure gauges: 0 to 160 psig.

b. Bronze bourdon-tube, adjustable-movement type.

c. Movement made of phosphor bronze, nylon, nickel, silver, stainless steel, Monel steel, nitride steel, or any combination thereof.

1) Bushings of above-mentioned material but different composition or hardness than shafts.

d. Case of brass or aluminum alloy.