Old Part Numbers: 150-1143, 641133Universal Regulator: 4-port, two 1/4" FPT ports, and two1/8" FPT ports (one is plugged). Pressure Gauges sold separately here). The regulator controls the amount of air to your air compressor hose. Replace this if you're...

Old Part Numbers: PS3030RVUnloader Valve used on many Furnas / Hubbell brand air compressor pressure switches includes the unloader valve with compression nut and sleeve, and screw. Replace this part if it leaks while the unit is running. If this part...

Old Part Numbers: SUDL-65

Old Part Numbers: A19715, CAC-4337-1, D288261/2" male NPT x 1/2" compression check valve, with 1/4" compression adapter. For model D55167 type 1 and others. If the small unloader (bleeder) valve on or under your switch leaks constantly AFTER the...

Old Part Numbers: SSN-56-ZN1 X 11/32 X 1

Plastic plug for the piston pin (two used per piston).

Washer for the flywheel bolt.

Pin for the piston. One used per piston.