| 1. | See Appendix for valve standards. |
| |
| 2. | Water: 250 lbs minimum AWWA standard, Pratt butterfly valve or equal
with ends to suit pipe used. When below grade, delete hand wheel and install operating nut and
valve box. |
| |
| 3. | Gas: See Appendix. |
| |
| 4. | Steam: Valves for high pressure steam distribution (125 psi system)
shall be 300 psi minimum steam rated flanged gate valves with rising stem (outside screw and yoke)
and bypass/warm-up valve. Valve 3 inches and smaller shall have screwed union bonnet. |
| |
| 5. | Condensate: Valves for steam condensate return shall be 150 psi minimum
steam rated flanged gate valves with rising stem (outside screw and yoke). Valves 3 inches and
smaller shall have screwed union bonnet. |
| |
| 6. | Install traffic rated concrete valve boxes (e.g.: G-5 Christy) and
extensions to grade. Cover shall have type of service (water, gas, etc.) cast in. |
| |
| 7. | Provide one tee handle operating wrench for each size operating nut,
with length to suit maximum valve depth. See Appendix, Typical Water Service and Piping Systems,
for PVC details for extension stem. |
