Corrosion Resistance - The main cases of all sizes are constructed from eco-brass alloy.All the Materials in contact with water, consciously selected by the known resistance to corrosion. Comoatibility - This DN 20 water meter is equipped with 3/4" NPT couplings. The meter is measing in gallon, you can use in mostly appliactions in USA. Accuracy - Max. Permission Error: Within the normal flow rate range is ± 1.5%, At low flow rate is ± 3%. High Flow Rate:20GPM, Minimum Flow Rate: 0.25 GPM, Continues Flow Rate:10GPM Premium Design - The lter at the inlet of the meter body permits cleaning it without breaking the metrological seal. The most reliable composite material for the body to ensure strongest and the longest life Professional - Watflow SJ is magnetically driven single jet (Velocity) water meter with Super Dry Type Register with size 5/8X3/4” designed by Watflow and meets to AWWA C712-10 standard apply for both cold and hot water. Application: Complies with AWWA certification, indicating that the water meter is fully suitable for drinking water, and the casing meets WRAS certification, suitable for homes/apartments/malls/hotels. Note: Not suitable for industrial liquid measurement. Description
Watflow 20MM 3/4" Npt Couplings water meter, measuring in cubic meter, cold water meter for garden,poor, and laboratory.

This water meter is made of the brass whcih resistant to corrosion and condensation deposits.
The instrument cover is made of brass and the bearing elements are made of high-quality steel, wear-resistant synthetic stones and other elements made of plastics.
It conforms to ISO 4064, for clean water only. Maximum Normal Flow Rate: 10 GPM, Minimum Flow Rate: 0.25 GPM.
This DN 20 water meter is equipped with 3/4" NPT couplings. There are 2pieces of brass nut ;2 brass connecting pipe; 2pieces of washers and 2 sealing caps.
Please note that this water meter measures in cubic meters, not gallons. 1 cubic meter is approximately equal to 264 gallons. Thanks for your understanding.