Regulators

The regulator is typically selected to match the port size of the upstream filter. It adjusts the pressure of the filtered air between a given range (typically 20-130 psi), with lower pressure ranges often available for more precision applications. Pulling the knob up and rotating it changes the air pressure, and the knob locks to a pressure setting when pressed down.

Select the right pressure

Equipment design often dictates the required operating pressure. Many machines require that a minimum operating pressure must be maintained and may utilize a pressure switch to alert the operator or shut down the machine if pressure drops too low. Although higher pressure than required may cause some machines to run faster, this can cause excess wear and tear due to the banging caused by fast cylinder motion. While over 100 psi may be supplied to a machine, operating at 60 to 80 psi is a good design goal, and leaves some "head room" in case the plant air pressure should sag slightly from time to time.

Gauge it

Features to look for in a quality regulator are a pressure relieving design and a built-in pressure gauge. The pressure relieving design will relieve pressure if the set point is lowered or if a downstream condition raises the pressure. The only way to reduce the pressure in a non-relieving design is via manual blow-off or to cycle the downstream equipment. An integral pressure gauge is always a good idea to provide quick indication of system air pressure, and to assist when setting the regulated pressure.

A variety of accessories are available to mount these regulators individually, OR in combination with filters, lubricators, shut off valves, and other accessories. Regulators and the combo filter/regulators shown below all feature a threaded mounting ring (and nut), and a mounting bracket is included with many models.

HELPFUL HINT: Specify FRL components with the same fitting sizes for ease of connection and mounting.

Air Regulators start at $29.00

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