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: 6211848600Air compressor flywheel bolt, M8x30mm left-hand thread.

This handy maintenance kit includes one air filter element for the B3800/B4900 air compressor and one (1) quart of high-quality fully synthetic lubricant to keep your air compressor running like a champ! Replace the air filter every 3-4 months if the air...

This handy maintenance kit includes a B3800/B4900 air filter element and one (1) quart of high-quality synthetic blend lubricant to keep your air compressor running like a champ! Replace the air filter every 3-4 months if the air compressor is used...

Old Part Numbers: 6210717280Valve plate assembly (includes inner gasket and valves).  If air leaks out of the intake filter or if the compressor just isn't performing like it should, order this kit. A loss of pressure or slow pressurization is...

Larger, low-pressure (LP) piston for the B4900 pump.

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...