DOUBLE CHECK VALVES SERIES PRODUCT CODES OPERATION MEDIUM HAZARD RATING. 20mm - 50mm FEATURES APPLICATION SPECIFICATION STATEMENT DESCRIPTION
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1 PRODUCT CODES DCV20DO DCV25DO DCV32DO DCV40DO DCV50DO DCV20 DCV25 DCV32 DCV40 DCV50 20mm Double Check Valve - Device Only 25mm Double Check Valve - Device Only 32mm Double Check Valve - Device Only 40mm Double Check Valve - Device Only 50mm Double Check Valve - Device Only 20mm Double Check Valve Complete with Fittings Kit 25mm Double Check Valve Complete with Fittings Kit 32mm Double Check Valve Complete with Fittings Kit 40mm Double Check Valve Complete with Fittings Kit 50mm Double Check Valve Complete with Fittings Kit 20mm - 50mm FEATURES Corrosion resistant Designed for easy and quick in line maintenance and testing Replaceable seats Low head loss Interchangeable poppet and spring Maximum working pressure of 1200 kpa Operating temperature range of 1 C to 80 C Approved to AS DESCRIPTION situations. OPERATION During normal flow conditions, the two check valves are held open, supplying water downstream. Each check valve is designed to maintain a minimum of 7 kpa across the valve during normal operation. Should the downstream pressure increase to within 7 kpa of supply pressure, both check valves will close as double protection against a backflow condition. APPLICATION The AVG Series Double Check Valve provides protection to the potable water supply from contamination in medium hazard applications such as industrial, commercial and medical equipment. SPECIFICATION STATEMENT AVG Series Double Check Valves shall be installed as per Australian Standards AS , including resilient seated isolation valves and strainer The backflow prevention device shall be manufactured to AS and be annually tested and maintained as recommended in AS The valve shall be adequately supported with approved supports and clipping as required. The device features two independent spring-loaded check valves. These are housed in a single bronze body. They may be installed horizontally or vertically. 16 Tel: 1800 AVG AUS ( )
2 FLOWCHARTS 20mm - 50mm MATERIALS Body and covers Springs Poppets Seat Discs Fasteners Check Seats Bronze Glass-filled Celcon Silicone rubber Glass-filled Noryl TECHNICAL DATA Threaded inlet & outlet Female BSP Min. working pressure 220 kpa Max. working pressure 1200 kpa Max. temperature 60 C DIMENSIONS AND WEIGHT Tel: 1800 AVG AUS ( ) 17
3 PRODUCT CODES DCV65FLGDO DCV80FLGDO DCV100FLGDO DCV65FLG DCV80FLG DCV100FLG 65mm Double Check Valve - Device Only FLG Table E 80mm Double Check Valve - Device Only FLG Table E 100mm Double Check Valve - Device Only FLG Table E 65mm Double Check Valve Flanged Complete Table E 80mm Double Check Valve Flanged Complete Table E 100mm Double Check Valve Flanged Complete Table E 65mm - 100mm FEATURES Corrosion resistant Designed for easy and quick in line maintenance and testing Replaceable seats Low head loss Interchangeable poppet and spring Maximum working pressure of 1200 kpa Operating temperature range of 1 C to 60 C Approved to AS DESCRIPTION situations. OPERATION During normal flow conditions, the two check valves are held open, supplying water downstream. Each check valve is designed to maintain a minimum of 7 kpa across the valve during normal operation. Should the downstream pressure increase to within 7 kpa of supply pressure, both check valves will close as double protection against a backflow condition. APPLICATION The AVG Series Double Check Valve provides protection to the potable water supply from contamination in medium hazard applications such as industrial, commercial and medical equipment. SPECIFICATION STATEMENT situations. The device features two independent spring-loaded check valves. These are housed in a corrosion resistant coated ductile iron body. They may be installed horizontally or vertically. The device features two independent spring-loaded check valves. These are housed in a corrosion resistant coated ductile iron body. They may be installed horizontally or vertically. 18 Tel: 1800 AVG AUS ( )
4 FLOWCHARTS 65mm - 100mm MATERIALS Body and covers Springs C.V. Seat Discs Fasteners Check Seats External finish Ductile iron EPDM Bronze Epoxy Coat TECHNICAL DATA Flanged inlet and outlet Table E Min. working pressure 220 kpa Max. working pressure 1200 kpa Max. temperature 60 C DIMENSIONS AND WEIGHT Tel: 1800 AVG AUS ( ) 19
5 PRODUCT CODES DCV150FLGDO DCV150FLG 150mm Double Check Valve - Device Only FLG Table E 150mm Double Check Valve Flanged Complete Table E 150mm - 250mm FEATURES Corrosion resistant Designed for easy and quick in line maintenance and testing Replaceable seats Low head loss Interchangeable poppet and spring Maximum working pressure of 1200 kpa Operating temperature range of 1 C to 60 C Approved to AS DESCRIPTION situations. OPERATION During normal flow conditions, the two check valves are held open, supplying water downstream. Each check valve is designed to maintain a minimum of 7 kpa across the valve during normal operation. Should the downstream pressure increase to within 7 kpa of supply pressure, both check valves will close as double protection against a backflow condition. APPLICATION The AVG Series Double Check Valve provides protection to the potable water supply from contamination in medium hazard applications such as industrial, commercial and medical equipment. SPECIFICATION STATEMENT situations. The device features two independent spring-loaded check valves. These are housed in a corrosion resistant coated ductile iron body. They may be installed horizontally or vertically. The device features two independent spring-loaded check valves. These are housed in a corrosion resistant coated ductile iron body. They may be installed horizontally or vertically. 20 Tel: 1800 AVG AUS ( )
6 FLOWCHARTS 150mm - 250mm MATERIALS Body and covers Springs C.V. Seat Discs Fasteners Check Seats External finish Ductile iron EPDM Bronze Epoxy Coat TECHNICAL DATA Flanged inlet and outlet Table E Min. working pressure 220 kpa Max. working pressure 1200 kpa Max. temperature 60 C DIMENSIONS AND WEIGHT Tel: 1800 AVG AUS ( ) 21
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