W9000 & W9500
The series is a float operated discharge arm designed for use on the outlets from tanks when varying liquid levels are to be accommodated in association with the demand for a controlled rate of gravity discharge.
The series W9000 floating arm is a variable discharge type with single float arrangement. For minimum critical flow level the constant discharge floating arm with either single or twin float arrangement is recommended.
The outlet flange is supplied in accordance with BS450 PN16 rating.
|Metal to metal swivelling parts|
|Fixing bolts and nuts|
|Alternative material for swivel|
|Alternative flange connection|
|Expanding type fixing bolts|
|Discharge of Water|
The discharge of water from an orifice can be calculated from the following formula assuming the water has a free discharge.
Q= mA √2gh
g = 9.81 metres/sec2
The coefficient of velocity of water from a submerged orifice = 0.97. The coefficient of contraction of an orifice comprising a bevel edged thin plate =0.86