PR Pressure Reducing Control Valve
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pressure reducing control valve Pressure Reducing Pilot Valve Ball Valves In-line Finger Filter Pressure Gauge Adjustment Bolt description Armaş “PR” model pressure reducing control valve is the hydraulic control valve which reduces high upstream pressure value into desired lower pressure value by means of built-in pressure reducing pilot valves. Pressure reducer control valve controls downstream pressure value continuously and maintains it constant without being affected from flow rate and upstream pressure values. When no flow exists in the system, it is closer by itself automatically. When valve upstream pressure value decreases below adjusted downstream pressure value, it is opened fully by itself. Valve may be user in vertical and horizontal positions in the system. installation •Valve nominal diameter must equal to or one size smaller than line diameter.. •Mount valve in direction of arrow indicated on it. •It is recommended that insulation valves (butterfly or gate valves etc.), air relief valve, quick pressure relief valve (QR) and strainer valves will be used in line-mounting of valve. •During pressure decrease, cavitation risk is dangerous for valve body. Adjust downstream pressure value by referring cavitation data or consult our technical service. 3 1 Isolation Valve (Gate, Butterfly Valve etc.) 1 3 Pressure Reducing Valve 4 Air Valve 5 Quick Pressure Relie

adjustment • Operate pump, open main valve on network and deliver water to the system. • Open ball valve indicated with "b1" and close ball valve indicated with "b2" • Wait for a while until water reach valve control chamber. When water reach control chamber, pressure gauge will show a certain pressure value. • Adjust desired downstream pressure value by means of adjustment bolt with"e"on pilot valve indicated with "a"by referring pressure gauge indicated with "d" • When you turn adjustment bolt clockwise, downstream pressure value will increase and when you turn adjustment bolt counter -...

maintenance • System operating conditions that effect on the valve should be checked periodically to determent the required preventative maintenance schedule. • Check finger filter in valve upstream according to water quality. • Drain water within actuator of valve not used in winter. Please submit following information to our sales department while ordering. Maximum flow rate m3/h Maximum network/line pressure bar Main line size mm Valve connection type Maximum upstream pressure bar Minimum upstream pressure_ bar Desired downstream pressure bar