DAE NRVAS-75 Lead Free Non-Return-Valve for AS200U-75P, AS200U-75RP Water Meter

DAE NRVAS-75 Lead Free Non-Return-Valve for AS200U-75P, AS200U-75RP Water Meter - Image 2

DAE NRVAS-75 Lead Free Non-Return-Valve for AS200U-75P, AS200U-75RP Water Meter - Image 3

DAE NRVAS-75 Lead Free Non-Return-Valve for AS200U-75P, AS200U-75RP Water Meter - Image 4

Accessories, Non-Return Valve, Water Meters

DAE NRVAS-75 Lead Free Non-Return-Valve for AS200U-75P, AS200U-75RP Water Meter

$5.50

	1/2"	3/4"	1"	1-1/2"	2"	2" (Hot)
AS Series	NRVAS-50	NRVAS-75
MJ Series	NRVMJ-50	NRVMJ-75	NRVMJ-100	NRVMJ-150	NRVMJ-200
MJn Series					NRVMJn-200	NRVMJn-200R
PD-y Series	NRVPD-50y	NRVPD-75y

An in-expensive Lead Free Non-Return-Valve to be installed at the outlet (2^nd picture) of DAE AS200U-75P, DAE AS200U-75RP, DAE AS200U-75 or DAE AS200U-75R to prevent the water from flowing back and pollute the source water.
For DAE Cloud Metering System (3rd picture), 1 Non-Return-Valve is required for each Water Meter with pulse output, or the reading on the cell phone or PC will be more than the actual reading on the meter due to the back flow.
For the remote reading with DAE CO-10 KIT (4th picture) or AMR130 (5th picture), 1 Non-Return-Valve is required for each Water Meter with pulse output, or the reading on CO-10 KIT or AMR130 will be more than the actual reading on the meter due to the back flow.
When water flows back, water meter keeps generating pulse like water is flowing forward. The reading on cell phone, PC or CO-10 Electronic Pulse Counter is based on input of pulse. Therefore, without Non-Return-Valve, reading on cell phone, PC or CO-10 will be more than actual reading on meter due to back flow. For example, when 10 gallons of water flow through MJ-75 and 2 gallons flow back, the reading on the meter is 8 gallons. However, the reading on cell phone, PC or CO-10 will be 12 gallons.
For DAE Cloud Metering with DAE CC2030 KIT + DAE U-100 (Ultrasonic meter) or DAE CC2030 KIT + DAE MJ-100z (Encoded meter), the meter reading will always be same as the reading of cell phone, PC. Therefore Non-Return-Valve is not required.