Nordic catalogue - Watts Industries

COMPONENTS FOR SANITARY SYSTEMWATER HAMMER ARRESTORMini water hammer arrestor serie 05 (APW)Mini sliding piston water hammer arrestor in sealed copper tube. Can be installed in anyposition. Does not require maintenance. Suitable for washing machines, dish washers, sinks,sanitary systems, etc. Nickel-plated copper body. Acetal resin piston.Precharging pressure: 4 bar. Operating pressure: 10 bar. Peak pressure: 16 bar.Max. temperature: 85°C.171Article number DN Size Unit473015005 15 1/2" M 1Water hammer arrestor serie 15 (CAW)Water hammer arrestor like APW but with double sealed brass piston (O-ring and EPDM).Peak pressure: 20 bar. Max. temperature: 110°C. According to ASSE, ANSI, PDI.Article number DN Size Unit472015100 15 1/2" M 1Water hammer arrestor serie 150A (WAM)Water hammer arrestor designed for washing machines, dish washers, sinks, sanitarysystems, etc. Can be installed in any position. Painted stainless steel body. Elastomericdiaphragm. Max. temperature: 90°C. Precharging pressure: 3 bar. Peak pressure: 13 bar.Capacity: 0,16 litres.Article number DN Size Unit472015100 15 1/2" M 1Selection of water hammer arrestors series CAWUNI 9182 standard cites: "All hot and cold water distribution systems must be provided with water hammer arrestors ofhydropneumatic type (with permanent or resettable air cushions)." Each model of the CAW series is able to offer a certaincushioning action (table 1); hence for facilitating the choice we have given a table (table 2) with the unit load valuesassigned to each shut-off component (or units) normally installed in plumbing and hot water systems.N.B. Install the water hammer arrestor as close as possible to the shut-off component causing the water hammer.Table 1SELECTION OF WATER HAMMER ARRESTOR ACCORDINGTO THE UNIT LOAD NUMBERMODEL Nd Protection Unit loadAPW -CAW -WAM 1/2" M A 1 - 11CAW 3/4" M B 12 - 32CAW 1" M C 33 - 60CAW 1.1/4" M D 61 - 113CAW 1.1/2" M E 114 - 154CAW 2" M F 155 - 330BATH SUITE complete with quick flushing = 8 load units - 1CAW or WAM 1/2"MTable 2APPLIANCEQuick flushing WCFloat WCWash basinsBath-tubBidetShowerWashing machine/dish washerSinkBath suite complete with quick flushing WCBath suite complete with float WCUNIT LOAD6312112286NO