Further movement of the assembly opens the passage between the CONTROLAIR Valve's IN and OUT lines allowing inlet air to flow into the OUT line and to the upper face of the diaphragm.Īs the flow of inlet air into the line raises the air pressure in the OUT line, if also increases the air pressure on top of the diaphragm. Initial movement of the valve assembly closes the passage from the CONTROLAIR Valve's OUT line to atmosphere. Starting from decreasing pressure position, to increase the OUT pressure of an 'H' CONTROLAIR Valve, its operator moves the valve assembly in contact with the exhaust valve seat. Further movement of the lever operates the pressure regulating portion.Ī complete description of the operation for each CONTROLAIR Valve is in the Service Information publication for that valve. The exhaust valves in these three-way valves are closed by initial movement from 'Neutral' of the CONTROLAIR Valve lever. In addition to having a pressure graduating valve, the HC-2, HD-2 and HE-2 CONTROLAIR Valves have one or two normally closed, non-graduating, three-way valves, When the lever of one of these CONTROLAIR Valves is moved 10º or more from its 'Neutral' position, it opens one of the 3-way valves and holds it open. Should leakage or a temperature variation occur that would change the outlet pressure called for by the CONTROLAIR Valve's operator position, this deviation in pressure opens either the CONTROLAIR Valve's supply valve or its exhaust valve to restore the correct pressure. When the CONTROLAIR Valve is in decreasing pressure position, the inlet valve is closed and the exhaust valve is open to vent the OUT pressure to atmosphere, inlet pressure is on top of the closed inlet valve. The ease with which an 'H' CONTROLAIR Valve is operated is obtained by creating a differential between the counterbalanced air pressure and spring forces within the valve and by using this differential to open or to close valves. The sensitive, precise pressure control of the 'H' CONTROLAIR Valve and its ability to change delivery pressure in small increments are obtained through the use of a large responsive diaphragm. OUTLET PRESSURE - According to model selected.PARTS INTERCHANGEABILITY - all similar parts in the various types of CONTROLAIR Valves are interchangeable.SIMPLICITY-CONTROLAIR Valves contain only a few wearing parts and these are easily replaced.All other parts are made of anodized aluminum or bronze. CORROSION RESISTANCE - diaphragms and seals are made of oil-resistant synthetic rubber.EASE OF MAINTENANCE - all pipe connections are made to a pipe bracket from which the CONTROLAIR Valve can be removed without disturbing the circuit's piping.After setting, 'H' CONTROLAIR Valves maintain their outlet pressure within a range of approximately 1-1/2 psi. graduating springs can be changed in increments of approximately 1/2 psi, other cataloged pressures are changed proportionately. The outlet pressure of valves having 100 lb. graduating springs can be changed in increments of approximately 1/4 psi. SENSITIVITY - the outlet pressure of 'H' CONTROLAIR Valves having 60 lb.EASE OF OPERATION - as 'H' CONTROLAIR Valves need only light operating forces, these valves increase both the efficiency and the output of operating personnel by decreasing operator fatigue and concentration required.In fact 'H' CONTROLAIR Valves are used wherever it is necessary, or preferable, to have instant and convenient control of the flow of air into a pneumatic circuit and of the pressure buildup of air in that circuit.īesides exceptional versatility, other CONTROLAIR Valve features are: Gates - Dredges - Cranes, Hoists & DraglinesĪnd many other kinds of equipment and machines. Throttles - Rolling Mills - Marine Propulsion EnginesĬlutches - Presses - Construction Equipment

Applications for 'H' CONTROLAIR Valves are limitless.

500 ag controlair valve