100+ page pdf - University of Iowa Hospitals and Clinics

Rev. 9 December 15, 2012Rev. 9 December 15, 2012a. All valves 3” diameter and less shall be quarter-turn, two-piece ball valves withbronze full-port body with sweat connections and valve extensions for application ofinsulation.b. For valves above 3”, typically Watts series G4000-FDA or equivalent flanged valvesshall be installed. For valves above 3” where space limitations dictate a morecompact valve and where approved by the Owner, install AMRI Isoria 16 butterflyvalves with lug style body, ductile iron body material, 420 stainless steel shaft, 316stainless steel disc, with a chemical resistant liner of Viton, and NR 165 aluminumhandles.c. All valves shall be tagged. Coordinate the specific numbering sequence with theOwner’s Rep. during the construction phase.7. Othera. Coordinate all pre-startup chlorination with the U of I Water Department.b. Insulate all domestic cold water systems. For typical cold water systems usefiberglass insulation with all-service jacketing. Install additional jacketing at locationswhere physical protection is required.c. Install drain valves at the bottom of all risers.d. All lavatory supply stops shall be 1/2” fip x 3/8” compression, 1/4 turn ball valvestyle. Sweat or compression stops are not acceptable. Lavatory supply stops shall beKeeney models 2048pc, 2058pc or equal.8. Domestic Hot Water Systemsa. Install the hot water recirculating lines for all plumbing fixtures such that they are nomore than ten feet from the end of an individual branch run. For locations wheresensor-operated faucets are approved by the Owner:i. Install the hot water recirculating lines such that they are no more than six inchesfrom the supply stop for that fixture.ii. Install an isolation valve above ceiling for the hot water recirculating line.b. Mixing valves shall have check valves downstream of its shut-off valves.c. Install combination balancing/flow measurement valves on the hot water recirculatingpiping:i. At each horizontal main where it attaches to its riser.ii. At other points where required.iii. The location of these combination balancing/flow valves shall be accuratelyshown on all as-built drawings. Any mixing valve installed in conjunction withan electronic faucet shall be piped with flexible stainless steel supplies and stops;rigid piped supplies are not acceptable.d. All hot water and hot water recirculating branches shall parallel the cold water: thehot water recirculating piping shall be designed as a reverse return system.36