Irrigation Backflow Testing

RPZ Short Form Test Procedures NIIO Purge Test Cocks: Open test cocks # 4,3,2,1 Close test cocks # 1,2,3,4 Close Valves on Gauge and Connect Hoses: install Fittings in test cocks using Teflon Tape Connect High Hose to # 2 test cock. Connect Low Hose to # 3 test cock. Open # 3 test cock, Open Low Bleed Valve. Open # 2 test cock, Open High Bleed ...

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