DUAL CHECK VALVES 2NV20-20F PRODUCT CODES OPERATION LOW HAZARD RATING. 20mm FEATURES APPLICATION SPECIFICATION STATEMENT DESCRIPTION

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BACKF PREVENTION DEVICES DUAL CHECK VALVES PRODUCT CODES 20mm FxF Dual Check Valve 20mm FEATURES Protects against back pressure and back siphonage Suitable for low hazard applications Compact and

C Approved to AS 2845-1 OPERATION Each of the two spring loaded check valves remains tightly closed until there is a demand for water downstream.

1 BACKF PREVENTION DEVICES DUAL CHECK VALVES PRODUCT CODES 20mm FxF Dual Check Valve 20mm FEATURES Protects against back pressure and back siphonage Suitable for low hazard applications Compact and light weight Independently operating check valves Economical DR Brass Suitable for vertical and horizontal installations Maximum working pressure of 1500 kpa Operating temperature range of 1 C to 80 C Approved to AS OPERATION Each of the two spring loaded check valves remains tightly closed until there is a demand for water downstream. If the back pressure increases above the supply pressure, there is a reverse direction of flow, the check valves close and backflow is prevented. If the second check valve is prevented from closing tightly, the first check valve will still provide protection against backflow. APPLICATION The AVG Dual Check Valves provide protection to the potable water supply from contamination in low hazard applications like meter connections on domestic properties. SPECIFICATION STATEMENT The AVG Dual Check Valves shall be installed to AS The backflow prevention device shall be manufactured to AS The dual check valve shall consist of two independent internally loaded checks and be suitable for vertical or horizontal installation in low hazard applications. DESCRIPTION The AVG Dual Check Valves are designed to prevent cross connection of non potable water into safe drinking water systems. They are compact and economical devices that are easy to install both horizontally and vertically. Each device comprises two independently acting, internally loaded check valves in series. 26 Tel: 1800 AVG AUS ( )

2 BACKF PREVENTION DEVICES DUAL CHECK VALVES FCHARTS Pressure drop [kpa] Flow vs. Pressure loss MATERIALS Body and covers 20mm DR Brass Flow rate [l/min] Springs DIMENSIONS AND WEIGHT TECHNICAL DATA Inlet and outlet Female BSP Min. working pressure 220 kpa Max. working pressure 1500 kpa Max. temperature 80 C Tel: 1800 AVG AUS ( ) 27

BACKF PREVENTION DEVICES PRODUCT CODES 20mm FBSP x 25mm LN 20mm x 25mm FEATURES DR Brass handle Loose nut connection Removable copper sealing disc 1 hex nipple Double check and isolation combination

OPERATION Each of the two spring loaded check valves remains tightly closed until there is a demand for water downstream.

3 BACKF PREVENTION DEVICES PRODUCT CODES 20mm FBSP x 25mm LN 20mm x 25mm FEATURES DR Brass handle Loose nut connection Removable copper sealing disc 1 hex nipple Double check and isolation combination DESCRIPTION The AVG Dual Check Isolation Valves have been designed to prevent cross connection of non potable water into safe drinking water systems. OPERATION Each of the two spring loaded check valves remains tightly closed until there is a demand for water downstream. If the back pressure increases above the supply pressure, there is a reverse direction of flow, the check valves close and backflow is prevented. If the second check valve is prevented from closing tightly, the first check valve will still provide protection against backflow but there is no visible flow. APPLICATION The AVG Dual Check Isolation Valves provide protection to the potable water from contamination in all low hazard applications with the added convenience of an integral isolation ball valve. SPECIFICATION STATEMENT The AVG Dual Check Valves shall be installed to AS The backflow prevention device shall be manufactured to AS The dual check valve shall consist of two independent internally loaded checks and be suitable for vertical or horizontal installation in low hazard applications. The Dual Check Isolation Valve comes complete with the convenience of an integral isolation ball valve with a stainless steel handle. They are compact and economical devices that are easy to install both horizontally and vertically. Each device comprises two independently acting, internally loaded check valves in series. 28 Tel: 1800 AVG AUS ( )

4 BACKF PREVENTION DEVICES FCHARTS Pressure drop [kpa] Flow vs. Pressure loss Flow rate [l/min] MATERIALS Body and covers Springs Handle 20mm x 25mm DR Brass DIMENSIONS AND WEIGHT TECHNICAL DATA Inlet 20mm female Outlet 25mm loose nut connection including 25mm nipple Min working pressure 220 kpa Max working pressure 1500kPa Max temperature 80C C Tel: 1800 AVG AUS ( ) 29

BACKF PREVENTION DEVICES PRODUCT CODES 20mmC x 20mmLN 20mm x 20mm FEATURES DR Brass Loose nut connection Double check and isolation combination DESCRIPTION The AVG Dual Check Isolation Valves have

The Dual Check Isolation Valve comes complete with the convenience of an integral isolation ball valve with a stainless steel handle.

5 BACKF PREVENTION DEVICES PRODUCT CODES 20mmC x 20mmLN 20mm x 20mm FEATURES DR Brass Loose nut connection Double check and isolation combination DESCRIPTION The AVG Dual Check Isolation Valves have been designed to prevent cross connection of non potable water into safe drinking water systems. The Dual Check Isolation Valve comes complete with the convenience of an integral isolation ball valve with a stainless steel handle. They are compact and economical devices that are easy to install both horizontally and vertically. Each device comprises two independently acting, internally loaded check valves in series. OPERATION Each of the two spring loaded check valves remains tightly closed until there is a demand for water downstream. If the back pressure increases above the supply pressure, there is a reverse direction of flow, the check valves close and backflow is prevented. If the second check valve is prevented from closing tightly, the first check valve will still provide protection against backflow but there is no visible flow. APPLICATION The AVG Dual Check Isolation Valves provide protection to the potable water from contamination in all low hazard applications with the added convenience of an integral isolation ball valve. SPECIFICATION STATEMENT The AVG Dual Check Valves shall be installed to AS The backflow prevention device shall be manufactured to AS The dual check valve shall consist of two independent internally loaded checks and be suitable for vertical or horizontal installation in low hazard applications. Tel: 1800 AVG AUS ( )

6 BACKF PREVENTION DEVICES FCHARTS Flow vs. Pressure loss 20mm x 20mm Pressure drop [kpa] MATERIALS Flow rate [l/min] Body Springs Handle DR Brass Aluminium DIMENSIONS AND WEIGHT TECHNICAL DATA Inlet 20mm Compression Outlet 20mm loose nut Max working pressure 2500kPa Max temperature 80 C Tel: 1800 AVG AUS ( ) 31

REDUCED PRESSURE ZONE DEVICES SERIES PRODUCT CODES OPERATION HIGH HAZARD RATING. 15mm - 50mm FEATURES APPLICATION DESCRIPTION

REDUCED PRESSURE ZONE DEVICES SERIES PRODUCT CODES OPERATION HIGH HAZARD RATING. 15mm - 50mm FEATURES APPLICATION DESCRIPTION PRODUCT CODES RPZ15DO RPZ20DO RPZ25DO RPZ32DO RPZ40DO RPZ50DO RPZ15 RPZ20 RPZ25 RPZ32 RPZ40 RPZ50 15mm RPZD Device Only 20mm RPZD Device Only 25mm RPZD Device Only 32mm RPZD Device Only 40mm RPZD Device