Flex-Flo 700

Flow Measurement:


Product Datasheet

The 700 Series Flex-FloTM meter is a simple and rugged flow rate indicator for air, water and other transparent fluids. It is particularly well adapted for applications that fall within standardized flow ranges at moderate pressures and temperatures. The 700 Series features a rugged cast aluminum housing with metal threaded connections, a full air tempered glass window and the ability to install the meter in horizontal (left to right) and vertical (up or down) flow orientations – all at an economical cost.

The unique wedge shape of the housing enhances the self-cleaning capabilities of the meter which has large internal cavities that resist accumulations of foreign material. Unlike other variable area tube and float designs, the Flex-FloTM may be installed in a horizontal piping system or even in down flow applications.

  • Instantaneous flow rate measurement
  • Observe fluid conditions for color, clarity and flow.
  • Use in horizontal (left to right flow) or vertical (up or down flow) piping systems.
  • Available all aluminum construction is not susceptible to deterioration from UV exposure in outdoor applications.
  • Design resists particulate and scale.
  • Low pressure loss.
  • Rugged cast aluminum construction at pricing competitive with plastic “rotameters”.

flex-flo-principal-operationsFlex-FloTM meters are variable area flow rate meters (“rotameter”). The internal volume of the housing enlarges from the inlet to the outlet. The primary element is a tempered alloy vane with one end affixed to the apex of the meter housing.As the flow rate changes the vane flexes in direct proportion. As
the operation of the primary sensor is not dependant upon gravity, the Flex-Flo™ 700 Series may be used in horizontal (left to right flow) as well as vertical (up or down flow) piping systems.
Materials of Construction:

Body/Housing: Aluminum
Window: Tempered Glass
Vane: 17-7ph Stainless steel
O-ring: EPM

Flow Orientation: Horizontal—Left to Right; Vertical—Up and Down

Pressure Limit: 114.7psia/7.9 bar a (100psig/6.9 bar g)

Temperature Limit: 212°F (100°C) Repeatability: ± 1% of Full Scale

Accuracy: ± 5% of Full Scale @68°F and 14.7 psia (0 psig)

Process Connections:

  • 1/2” NPT
  • 3/4” NPT
  • 1″ NPT
  • 1 1/2
  • 2″ NPT
  • 3″ NPT
  • 4″ NPT