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CMetric Metric Right Angle Flow Control Valves Prestoflow - Flow regulators Flow characteristics Parker offers a wide range of flow regulators to meet a large variety ofPrestoflow pneumatic integrated fittings are designed to permit applications. Prestoflow can be fitted directly to a cylinder port ormaximum flow in both directions. This full flow in both directions, mounted in the line. Prestoflow regulators with push-in terminations aretogether with the very precise setting of the screw, permits a wide suitable for use with a wide range of plastic tubing. Prestoflow range of adjustment between the minimum and maximum speeds.The regulators with threaded terminations can be adapted for use with sketch opposite shows the flow progression according to the adjust- copper and steel tubing or hoses. ment of the screw. Inlet Outlet General principle chamber chamber Flow regulators - ASSEMBLY TORQUE The piston rod moves as a result of assembly torques the pressure differential on either To ensure a leak free THREAD MIN. NM MAX. NM side of the piston. The speed of the connection for port mounted rod is normally determined by the regulators the regulator bolt M5 0.2 0.5 exhaust air flow from the cylinder. should be tightened in 1/8 6 9 The control of this air flow is via an accordance with the table 1/4 10 15 adjustable needle valve installed on opposite. 3/8 14 22 the exhaust port. Inlet Exhaust O 1/2 30 42 u t Flow regulation on the let On single acting cylinders and some exhaust port Flow miniature (M5) double acting cylinders, the air flow can be Inlet Outlet chamber chamber controlled from the inlet port. Inlet To permit regular and smooth movement of the piston rod, flow control should be made as near to the cylinder as possible. Operation The mounting of two flow control Inlet Exhaust devices on a cylinder permits speed Flow regulation on control of the cylinder rod in both the inlet port directions. Adjustment turns 20% 40% 60% 80% 100% The sketch opposite shows a cylinder with inlet air at port A. Air passes freely through the flow control valve A, with the check valve in the open position.The exhaust is controlled by the flow control fitting B, where the check valve in the closed position forces the air to go through the adjustable needle valve. The function of A and B are reversed when inlet air is applied to port B. Flow control on a double acting cylinder Parker Hannifin Corporation C8 Parker Brass Products Division Otsego, Michigan Metric