b. RO Product Tubing From Each Membrane Housing: ASTM D1785, Schedule 80 PVC, ASTM D2855 socket welded and flanged. c. Low Pressure Control and Pressure Gage Tubing: Polyethylene. d. High Pressure Reject and Recycle Piping: Greater than 520 kPa (75 psig): ASTM A269/A269M, Type 304 schedule 10 stainless steel with butt welded joints. e. High Pressure Control and Pressure Gage Tubing: 6895 kPa (1000 psig) burst nylon. 2.4 EXPOSED PIPING A. Finished Room: Use full iron pipe size chrome plated brass piping for exposed water piping connecting fixtures, casework, cabinets, equipment and reagent racks when not concealed by apron including those furnished by the Government or specified in other sections. 1. Pipe: ASTM B43, standard weight. 2. Fittings: ASME B16.15 cast bronze threaded fittings with chrome finish. 3. Nipples: ASTM B687, Chromium-plated. 4. Unions: MSS SP-72, MSS SP-110, brass or bronze with chrome finish. Unions 65 mm (2-1/2 inches) and larger shall be flange type with approved gaskets. B. Unfinished Rooms, Mechanical Rooms and Kitchens: Chromeplated brass piping is not required. Paint piping systems as specified in Section 09 91 00, PAINTING. 2.5 ETHYLENE OXIDE (ETO) STERILIZER WATER SUPPLY PIPING A. Stainless steel, ASTM A312, Schedule 10 with stainless steel butt welded fittings. Provide on sterilizer water supply. 2.6 TRAP PRIMER WATER PIPING A. Pipe: Copper tube, ASTM B88, type K, hard drawn. B. Fittings: Bronze castings conforming to ASME B16.18 Solder joints. C. Solder: ASTM B32 alloy type Sb5. Provide non-corrosive flux. 2.7 STRAINERS A. Provide on high pressure side of pressure reducing valves, on suction side of pumps, on inlet side of indicating and control instruments and equipment subject to sediment damage and where shown on drawings. Strainer element shall be removable without disconnection of piping. B. Water: Basket or "Y" type with easily removable cover and brass strainer basket.
b. RO Product Tubing From Each Membrane Housing: ASTM D1785, Schedule 80 PVC, ASTM D2855 socket welded and flanged. c. Low Pressure Control and Pressure Gage Tubing: Polyethylene. d. High Pressure Reject and Recycle Piping: Greater than 520 kPa (75 psig): ASTM A269/A269M, Type 304 schedule 10 stainless steel with butt welded joints. e. High Pressure Control and Pressure Gage Tubing: 6895 kPa (1000 psig) burst nylon. 2.4 EXPOSED PIPING A. Finished Room: Use full iron pipe size chrome plated brass piping for exposed water piping connecting fixtures, casework, cabinets, equipment and reagent racks when not concealed by apron including those furnished by the Government or specified in other sections. 1. Pipe: ASTM B43, standard weight. 2. Fittings: ASME B16.15 cast bronze threaded fittings with chrome finish. 3. Nipples: ASTM B687, Chromium-plated. 4. Unions: MSS SP-72, MSS SP-110, brass or bronze with chrome finish. Unions 65 mm (2-1/2 inches) and larger shall be flange type with approved gaskets. B. Unfinished Rooms, Mechanical Rooms and Kitchens: Chromeplated brass piping is not required. Paint piping systems as specified in Section 09 91 00, PAINTING. 2.5 ETHYLENE OXIDE (ETO) STERILIZER WATER SUPPLY PIPING A. Stainless steel, ASTM A312, Schedule 10 with stainless steel butt welded fittings. Provide on sterilizer water supply. 2.6 TRAP PRIMER WATER PIPING A. Pipe: Copper tube, ASTM B88, type K, hard drawn. B. Fittings: Bronze castings conforming to ASME B16.18 Solder joints. C. Solder: ASTM B32 alloy type Sb5. Provide non-corrosive flux. 2.7 STRAINERS A. Provide on high pressure side of pressure reducing valves, on suction side of pumps, on inlet side of indicating and control instruments and equipment subject to sediment damage and where shown on drawings. Strainer element shall be removable without disconnection of piping. B. Water: Basket or "Y" type with easily removable cover and brass strainer basket.
VA221100.docx