Float #66

This 4-Way, adjustable, last position bi-level vertical float, is actuated
by the float sliding along the rod assembly to either pull it down or
float it up, switching the float pilot position. When the float is between
the adjustable high and low level stoppers, the main valve remains
in its last position.
The float pilot directs flow and pressure between its ports:
■ When the float pushes the upper stopper up,
it connects port “P” to “C1” and port “C2” to “V”.
■ When the float pulls the lower stopper down,
it connects port “P” to “C2” and port “C1” to “V”.
The extendable rod is to be balanced by counterweights installed
on the lever system according to rod length and system pressure.

2-Way Modulating Vertical Float

This adjustable 2-Way Modulating Vertical Float is actuated by the “locked in place” float either pulling the float assembly rod down or floating it up. This float can be used to control reservoir filling or emptying:

  •  When used as a filling level control pilot, it throttles closed as level rises towards set point.
  •  When used as an emptying level control pilot, it modulates open as level rises towards set point.

The extendable rod is to be balanced by counterweights installed on the lever system according to rod length and system pressure.

Pitot Tube

When a pitot tube is used as an integral part of a flow control valve control circuit, it provides the differential pressure (ΔP) to power the flow control pilot. A pitot tube flow sensor is recommended for applications where low head loss is essential and required flow is relatively high. Due to its low ΔP output, a flow control valve with pitot tube (Model 770-j) should employ a high sensitivity pilot.

4-Way Bi-Level Vertical Float #66

This 4-Way, adjustable, last position bi-level vertical float, is actuated by the float sliding along the rod assembly to either pull it down or float it up, switching the float pilot position. When the float is between the adjustable high and low level stoppers, the main valve remains in its last position.
The float pilot directs flow and pressure between its ports:

  •  When the float pushes the upper stopper up, it connects port “P” to “C1” and port “C2” to “V”.
  •  When the float pulls the lower stopper down, it connects port “P” to “C2” and port “C1” to “V”.

The extendable rod is to be balanced by counterweights installed on the lever system according to rod length and system pressure.

Orifice Assembly

When an orifice plate assembly is used as an integral part of a flow-control valve control circuit, it provides the differential pressure (ΔP) to power the flow control pilot. The opening and closing of the pilot causes the flowcontrol valve to throttle accordingly. Total head-loss across the valve is reduced by locating sensing ports close to the orifice plate, to sense downstream pressure before it recovers. The orifice plate internal diameter is calculated and machined according to valve size and required flow limitation