BI-STABLE (LATCHING) VALVE
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1 BI-STABLE (LATCHING) VALVE DESCRIPTION The Pilot operated Bi-stable (latching) valve is designed for battery applications or low power DC supplies. The valves are operated using a polarised DC pulse to switch on and an opposite polarity pulse to switch off. The key attributes are: Low power Intrinsically safe WRAS (UK) approved for potable water supplies Robust construction and long service life Customer specific options available for OEM clients APPLICATIONS The Bi-stable valve is available for use in a wide variety of applications, these include: Automatic tap systems Urinal flush systems Sprinkler systems GENERAL PERFORMANCE DATA VOLTAGE: POWER DRAW: MIN PULSE: MIN VOLTAGE: MAX VOLTAGE: COIL INSULATION: INSULATION: AMBIENT TEMPERATURE: LIQUID TEMPERATURE: OPERATING PRESSURE: FLOW REGULATOR: EMC: TERMINALS: WATER HAMMER AT 6BAR: 6VDC (9VDC on request) 280mA at 6VDC 2mS 3.VDC 8.0VDC Class F (140 C Operating Temperature) Class II. Fully double insulated. No Earth required 60 C maximum 8 C maximum 0.2 to 10bar - 17 L/min Fully compliant Two 6.3 x 0.8 mm male tab terminals 2bar max 1
2 SCHEMATIC DRAWING 1/2BSP MODEL: + - GENERAL MATERIAL DATA COMPONENT BODY GUIDE TUBE SPRINGS MATERIAL NYLON PA % Glass Filled NYLON PA % Glass Filled AISI 316 stainless steel ARMATURE Stainless Steel Z6CDF18.2 (ASTM XM 34) DIAPHRAGM, FLOW REGULATOR AND ARMATURE TIP FILTER FLOW REGULATOR HOUSING COIL BOBBIN COIL ENCAPSULATION MAGNETIC CIRCUIT MOUNTING BRACKET Ethylene Propylene Diene Monomer (EPDM) Elastomer or Silicon Polyacetal Polyacetal Nylon PA 6.6 heat stabilised Nylon PA 6 heat stabilised Mild Steel 1.2 Galvanised bichromated Mild Steel 1.2 Galvanised bichromated CHEMICAL RESISTANCE Please verify valve material if using strong or aggressive chemicals in its application. Chemical resistance information is available on the Hydralectric website 2
3 GENERAL INSTALLATION REQUIREMENTS MINIMUM OPERATING PRESSURE: MINIMUM DIFFERENTIAL PRESSURE: INLET MATING CONNECTION: WATER QUALITY: INLET FILTER: SERVICE LIFE: 0.2bar, for effective closure of diaphragm to valve seat 0.2bar, min pressure differential between inlet and outlet of valve Maximum torque setting 4.0 Nm Solenoid valves are designed for use on potable clean water systems, excessive particulates can cause failure. Avoid direct connection to hot water boilers which may cause excess build up of calcium deposits 0.2mesh fitted as standard, failure to use a filter upstream of diaphragm can cause failure. 2,000 operations under cold water conditions Service life will vary according to local water conditions and temperature. PORTING CONNECTIONS SINGLE VALVE 180 BODY INLET OUTLET 3/4 BSP 3/4 BSP 1/2 BSP 1/2 BSP 1mm Compression (1/2 BSP) 1mm Compression (1/2 BSP) 3/8 BSP 3/8 BSP SINGLE VALVE 180 BODY & JOHN GUEST COLLECT SYSTEM INLET OUTLET 3/8 Push Fit 3/8 Push Fit /16 Push Fit /16 Push Fit 10mm Push Fit 8mm Push Fit 10mm Push Fit 8mm Push Fit 3
4 FLOW The graph represents typical flow characteristics for solenoid valve without restriction on the outlet and dynamic inlet pressure between 0 and.0bar. Note: Maximum flow rate is 1 lit/min, above this value the valve may fail to close after the coil is de-energised 30 2 BODY FLOW (LIT/MIN) PRESSURE DYNAMIC (BAR) FLOW REGULATION A flow regulator can be fitted to the inlet/outlet ports to provide constant flow with an inlet pressure range of 1 to 10bar. The flow regulator is composed of a plastic housing with studs onto which a rubber seal is located. Flow is controlled by pressure acting on the washer thus restricting the gap between the stud and water passage. OUTLET FLOW REGULATORS COLOUR FLOW L/MIN FLOW US GAL/MIN TOLERANCE (%) YELLOW BLUE PALE GREEN BROWN VIOLET ORANGE
5 STANDARDS The Solenoid Valve range is subjected to compliance testing and meets the following standards: WRAS: Water Research Advisory Scheme (Hot & Cold Water 8 C) RoHS: Hydralectric certifies all solenoid valves are and will continue to remain compliant to European Directive 2002/9/EC TECHNICAL ASSISTANCE Please contact out Sales or Technical Support team on 0044 (0) , or visit our website
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Electrically Operated Pressure Relief Cartridge, Size 1 Seated Design, Direct Acting Series WUVA 1LO...
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