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i <br />High head style <br />a <br />Cold weather kit <br />Drainback style <br />External flex extension <br />Component Working Pressure Ratings <br />True union ball check valve 200 psi (14 bar) at 73° F (23" C) <br />All other valves 150 psi (10 bar) at 73° F (23° C) <br />Unions 150 psi (10 bar) at 73° F (23° C) <br />Hose Specifications <br />Thickness and working pressures at 73° F (23°C) <br />�w <br />+7 <br />Field <br />1 cut — <br />High head style with <br />cold weather kit <br />installed <br />Low head style <br />Materials of Construction <br />Component <br />Material <br />Anti -siphon valve <br />Schedule 40 PVC <br />Ball valve <br />Schedule 40 PVC <br />Check valve <br />Schedule 40 PVC <br />Pipe and fittings <br />Schedule 40 PVC <br />Flexible hose <br />PUC <br />External flex hose <br />PVC <br />Flow control disc <br />Schedule 80 PVC <br />Gate valve <br />Schedule 80 PVC <br />Unions <br />Schedule 80 PVC <br />High-pressure flex hose <br />Special elastomer compound <br />Flexible hoses <br />Size (U.S. Nominal) <br />Wall thickness <br />Working pressure <br />Bursting pressure <br />(standard and external) <br />1 in. <br />0.11 in. (2.8 mm) <br />100 psi (7 bar) <br />355 psi ( 24 bar) <br />1.25 in. <br />0.13 in. (3.3 mm) <br />80 psi 16 bar) <br />250 psi (17 bar) <br />1.5 in. <br />0.13 in. (3.3 mm) <br />65 psi (4 bar) <br />200 psi (14 bar) <br />2 in. <br />0.16 in. (4.1 mm) <br />60 psi (4 bar) <br />175 psi (12 bar) <br />Flexible hoses <br />Size (U.S. Nominal) <br />Wall thickness <br />Working pressure <br />Bursting pressure <br />(high-pressure) <br />1 in. <br />0.235 in. (6.0 mm) <br />250 psi (17 bar) <br />N/A <br />1.25 in. <br />0.24 in. 16.1 mm) <br />250 psi (17 bar) <br />N/A <br />1.5 in. <br />0.24 in. (6.1 mm) <br />250 psi (17 bar) <br />N/A <br />2 in. <br />0.22 in. (5.6 mm) <br />200 psi (14 bar) <br />N/A <br />NTD -HV -HV -1 ® 20M Drence Systems' Inc. <br />Rev. 1.0, ® 5/08 <br />Page 2 of 2 <br />