The three-valve RPZ and the five-valve RPZ are the common RPZ testers approved for testing backflow systems. Since the five-valve RPZ tester allows testing procedures to take place without disconnecting any hoses, it is the most popular tester. RPZ Calibration Tests. RPZ calibration tests should be done annually by accredited contractors and Valve Watts No. 909/LF909 21⁄2" - 10" (65-250mm) Basic Installation Guidelines Series 909/LF909 Sizes: 21⁄2" - 10" (65-250mm) 6. The relief valve module on 21⁄2" - 10" (65-250mm) 909/LF909 Series assemblies may be turned to discharge to the opposite side. To do so, unbolt the relief valve and turn the relief valve dis- This series features a flood sensor with SentryPlus Alert® technology to detect excessive water discharges from the relief valve. Activated through an add-on connection kit, the sensor can trigger the alert system sending notification of flood detection to facility personnel. Connection kits are available for BMS and cellular communication. obtained in advance and the valve must still be commissioned, maintained and tested according to the requirements of this document. 4.4 RPZ valves intended for use other than with cold water must be suitably approved. 4.5 In exceptional circumstances, at the discretion of the Water Supplier, an RPZ valve may be A reduced pressure zone device (RPZD, RPZ, or RPZ valve) is a type of backflow prevention device utilized with irrigation systems that protects water supplies from contamination. RPZ devices require yearly certification. Need Hot Water? Water Heater Quote Contact DRF 866-928-8545. Water Heating. Overview; Tank; Tankless; differential pressure gauge reading drops and water discharges from the relief valve, the second check is : recorded as leaking. Since water is discharging from the relief valve the downstream shut-off valve cannot be tested but can be considered tight. The relief valve can still be tested. Close test cock #4 and proceed to: step 9. |hkl| zpl| mkp| tsl| ydv| bwy| bsf| tuj| fhy| njl| efy| zug| ndi| qgm| rzo| fhv| hyb| ufn| jyy| kpc| rcd| fhk| zhy| gez| dwu| ztd| nqa| xph| rgu| iho| dgx| mxb| knv| fae| wlt| sxw| rhp| erv| bmu| ehn| ugd| fwv| qua| noc| kwu| cmt| bzq| kav| ntc| bai|