Water meter size 1 class D and size 1/2 class D

Details;

Water meter size 1/2'' class D
Technical Requirements Description
7 Other specifications?
Water meters should read with any type of water even if it is extremely hard,
Scaling or containing suspended solids.
?
Water meters must have inbuilt customer label of SHINYANGA WSSA.
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Meter number should be indicated on the head screw
WATER METER CLASS D 1/2 PC 2480
1. Overview This specification applies to Cold-water meters based on a direct mechanical
Process
Involving the action of the velocity of water through its effect on the rotation
Rate of a
Moving part of a meter (Propeller meter), or through the use of volumetric
Chambers
With mobile piston (piston meter) for meter size 15mm (1/2? ? ) and 20mm
(3/4? ? ).
It applies to water meters with nominal flow rate up to 4, 000m3/h and with a
Maximum working pressure of 16-bar.
For this purpose, water should be considered cold when its temperature is in the
Range
Of 00C to 400C
I.
Dry type
II.
Suitable for potable water
III.
Multi-jet working principle IV. Special glass with high resistance to pressure
And impact
V.
Low pressure loss, high sensitivity at initial flow
VI.
Vacuumed mechanism
VII.
360? Rotating lid and Non return valve
VIII.
Brass body with high resistance to pressure and impacts
IX.