Type G
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CRAPHAEL Product brochure Type G Piston Actuated Control Valve

Type G - Piston Actuated Control Valve ABOUT US Raphael is leading the international market valve industry with its wide and innovative product range for water flow control. Founded in 1949, Raphael Valves Industries Ltd. is a manufacturer of high quality control valves for water control systems. Raphael’s product range includes hydraulic control valves, butterfly valves, gate valves, check valves and many other solutions for the Fire Protection, Irrigation, and Waterworks markets. RAPHAEL’S professional management and highly qualified technical staff, along with its extended experience in...

TYPE G Piston Actuated Control Valve DN50-900 PN 16-64 The hydraulic control valve is the most effective device for automation of industrial and municipal water supply systems or for any other system that requires control over changing operating conditions. The hydraulic valve is actuated by pipeline pressureand does not require any outside energy source. Type G – Piston Actuated Hydraulic Control Valve for use in waterworks for pressure reducing, pressure sustaining, pressure relief, flow control, surge anticipation, level control and other control applications. Excellent for use in large...

Type G - Piston Actuated Control Valve PISTON ACTUATED CONTROL VALVE CHARACTERISTICS • DN 50 - 900 • PN 16-64 • Operational temperature: -29°C - +90°C • Impermeability: Class A according to the ISO 5208 standard. • Flange bores drilling in accordance with EN 1092-2 and ISO 7005-2 TYPICAL APPLICATIONS • Water supply and waterworks mains • Pumping stations, water treatment stations, water reservoirs • Firefighting systems The body of the hydraulic valve is divided into a main valve and a control chamber. When via the control pilot the pipeline pressure connected to the control chamber, the...

Type G - Piston Actuated Control Valve HEADLOSS AT MAXIMUM OPENING DN RECOMMENDED MODE OF OPERATION Zone 1: Zone of valve normal operation with a standard plug Zone 2: Large pressure drop with cavitation risk; it is recommended to use a valve with lower passagerestricted plug Zone 3: Cavitation. Valve use only upon recommendation by the manufacturer AP = (Pupstream - Pdownstream) in kg/cm2 Q - Flow in m3/hour Kv - Flow rate in m3/hour specified for PN10/16 locks RD - Relative Density, (water = 1) 4RAPHAEL Raphael Valves Industries (1975) Ltd.

PISTON ACTUATED CONTROL VALVE G-60 PRESSURE REDUCING VALVE G 60/62 and G 63, hydraulic pressure reducing valves. The main valve is controlled by an adjustable pilot valve preset to the required downstream set pressure. The valve maintains constant downstream pressure at varying pipeline inlet pressure or downstream flow demand. The operation of the valve does not require additional power source;itis actuated by pipeline pressure. PRINCIPLE OF OPERATION When the pressure falls below the value set by the pilot spring (7) due to increasing flow demand, the pilot is activated and releases the...

Type G - Piston Actuated Control Valve PISTON ACTUATED CONTROL VALVE G-80 (80Q) PRESSURE SUSTAINING/RELIEF VALVE G 80/82 hydraulic pressure reducing valves. The main valve is used for upstream pressure sustaining or relief. The main valve is controlled by an adjustable pilot valve preset to the required downstream set pressure. The valve controlls regardless of flow demand. PRINCIPLE OF OPERATION When the inlet pressure becomes higher than the preset value, the pilot (4) is activated to open and releases the pressure from the main valve's control chamber. The main valve opens, thus reducing...

PISTON ACTUATED CONTROL VALVE G-68 PRESSURE REDUCING & SUSTAINING VALVE G-68 is controlled by two pilots for regulating the upstream and downstream pressure. As a result of the serial operation of the two pilots, maximum constant downstream set pressure is maintained, while at the same time mantianing minimum set pressure the valve inlet When the outlet pressure becomes lower than the pilot spring's preset value (7), the pilot is activated and releases the pressure from the main valve's control chamber. The main valve opens, thus increasing the outlet pressure. When the outlet pressure...

Type G - Piston Actuated Control Valve PISTON ACTUATED CONTROL VALVE G-88 HYDRAULIC SURGE ANTICIPATING VALVE The G 88 is intended for protecting the pipeline against hydraulic shock from water hammer. Hydraulic shock can be caused by emergency shutdown of the pump due to power outage or by abrupt closure of the stop valve alog the main line. thereby rapid pressure drop front is followed by a reverse wave with extremely high pressure. The low and high-pressure waves alternate within a short time interval. The G 88 is controlled by two pilots - for high and low-pressure. Under normal...

G-20 PUMP CONTROL VALVE The G-20 hydraulic valve is intended for gradual pump startup and shutdown, as well as hydraulic check valve for protection of pumping equipment and pipeline networks against damage due to excessive operation blow intended pump curve as well as preventing backflow. The G-20 valves can be used with any pump type. The valve is linked to the pump's electric control panel Prior to startup, the valve is closed. When the pump is energized, the solenid valve (8) is activated and gradually relieves the pressure of the control chamber, leading to a gradual opening of the main...

SMART SOLUTIONS RAPHAEL VALVES INDUSTRIES (1975) LTD, founded in 1949, is the first Israeli manufacturer of water control valves. RAPHAEL'S research department constantly strives to introduce new and innovative products and solutions for water control systems including water works, fire-protection and irrigation systems and other fields. North Industrial Zone Or Akiva, 3065401 POBox 555, Israel Phone: +9724 6263555 E-mail: info@raphael-valves.com Website: www.raphael-valves.com