Irrigation valve Leopard

regulatinghydraulichigh-pressure

LEOPARD pressure reducing and sustaining hydraulic diaphragm valve. It is used to automatically reduce the outlet pressure in a water network and hold a minimum pressure in the main high pressure line regardless of demand. Reducing and sustaining hydraulic valve Leopard pressure reducing and sustaining valves are available from DN 20 to DN 300 diameter. Applications The combined reducing and sustaining valve performs both functions independently. Prevents on-site generation: •Pressure drops. •Overpressures. It is mainly used to automatically reduce downstream pressure in the distribution network and hold a minimum of pressure in the main high pressure line regardless of the demand for distribution. Functioning The reducing pilot acts on the valve so that it has a modulating function, in order to keep the downstream pressure constant for the set control value, the holding pilot acts on the valve so that it has a modulating function, in order to maintain the upstream pressure above the minimum control value. The reducer pilot must be adjusted regarding the installation needs. Turning the reducer pilot screw clockwise you will reduce the outlet pressure. Turing the pilot anti-clockwise you will increase the outlet pressure. Turning the sustainer pilot screw clockwise you will reduce the intlet pressure. Turing the pilot anti-clockwise you will increase the outlet pressure. Take into account the following aspects: •Maximum reduction ratio: inlet pressure x 1/3. For example, with a 6 bar inlet pressure the outlet pressure will be 2 bar. Working in pressure under 2 bar the valve will suffer cavitation complications.