The Waverley water Mains Tester High Flow Unit is designed to give fast, accurate and direct reading of the mains flow and pressure at the hydrant standpipe. In operation the unit is designed to plug straight into any 2 1/2" instantaneous outlet. The hydrant is then opened and a sample of the flow is taken via a by-pass tube through a variable area flowmeter.

The flow passes through the integral filter to give direct readings of flow and pressure. The outlet is also a 2 1/2" female instantaneous coupling so that a hose may be fitted to remove water from the area. A blank cap complete with bleed button is also supplied for static pressure readings to be taken using the same pressure gauge, without disconnecting the unit. The unit requires little maintenance apart from the periodical cleaning of the filter

Connections
Inlet Connection	2 1/2" male instantaneous
Outlet Connections	2 1/2" Female instantaneous
Flow Data
Flow reading	Analogue pointer display driven by magnetic link from a variable area flowmeter
Maximum flow	100 litres per second (1320 gallons per minute)
Flow accuracy	+/-2% of reading
Turndown	5:1
Flow calibration units	20-100 l/s Others units by request
Pressure Data
Pressure readings	Analogue pointer display via bourden tube
Pressure accuracy	+/-1% full scale deflection
Maximum working pressure	19 Bar (272 psi)
Over test pressure	28 Bar (408 psi)
Pressure calibration units	0-22 Bar (0-320 psi) other units by request
Main materials of construction
Main body	Zinc plated steel tube
Flowmeter body	Anodied aluminium
Instantaneous coupling	Anodised aluminium
Piston, piston sleeve and springs	Stainless steel
Inlet filter	Perforated Stainless Steel
Weight	7.7 kg
Length	390mm
Form of supply	In carry case c/w blank cap, operating instructions and maintenance.