air compressor unloader valve. 671 sold. Of course, be sure to shut down the compressor and drain all tank pressure before doing so. Air is supposed to discharge from the piloted unloader valve when the compressor goes to idle. For the standard top-end setting of 135 PSI, adjust differential (4) so that 3 threads show above locknut (3). The air compressor unloader valve is usually built into the pressure switch assembly. Brand New. Turn top end setting (4) clockwise in 1/4 turn increments, tap down on internal rod at toggle and repeat until desired top end setting is reached. 141-1064 JENNY PILOT UNLOADER VALVE AIR COMPRESSOR PARTS. by 3/4-Inch NPT I.D. Your email address will not be published. The air compressor unloader valve is a very small but crucial part of the whole pressure maintenance process. From United States. You are seeing this ad based on the product’s relevance to your search query. 1/2" FPT Inlet TOP x 1/2" FPT Outlet bottom 30 scfm. As the name implies, it unloads or blows off the pressure inside the discharge pipe once the compressor stops. Unloader Valving, Integral Relief Valve ¾ 2)CrankCase Contains: Cylinder Block, Crankshaft, Piston & Bearings, Governor Port & Connecting Rod **Can Remove Cylinder Head without removing Whole Air Compressor **Use Compressor Mounting Gasket #590GB2159 if you are replacing the whole air compressor, instead of just the cylinder head That excess air gets discharged to atmosphere until the tank gets depleted and needs to be recharged. On its own it’s a minor issue that’s easy to fix, but it can cause damage to the head gaskets if left unresolved. Your email address will not be published. Then do an Internet search for that part. or Best Offer +C $16.51 shipping estimate. Sorry for the delayed response! It is small in appearance and has a very light weight. From United States +C $40.74 shipping. The air compressor unloader valve is often located near the air tank of the unit and is usually part of the pressure switch assembly. After making contact, turn differential (2) counterclockwise. Prime members enjoy Free Two-Day Shipping, Free Same-Day or One-Day Delivery to select areas, Prime Video, Prime Music, Prime Reading, and more. The air compressor unloader is valve is a small, but important, part of the reciprocating piston compressor. Buy It Now. If that’s the case, I’d remove the check valve and check to see if something is preventing it from sealing. 1,455 Items. $25.00 excluding shipping. It sounds like the check valve is leaking, likely due to some debris preventing it from sealing properly. The unloader valve is typically plumbed somewhere in the line between the compressor and the compressor tank, and quite frequently on the side of the compressor pressure switch, or as an integral part of the internal mechanism of the switch. Response must be less that 100,000 characters, Fast, FREE delivery, video streaming, music, and much more. Just be sure to shut the compressor down and drain the tanks before doing so. It works efficiently countering piston compressors. Loosen locknut (1) by turning counterclockwise several full turns. Would a compressor with a pilot valve also have a check valve?? Unloader valve leak issue. How Does it Practically Work? 310924003 Replacement Unloader Valve for Himore Pressure Washer Pump (Homelite/Ridgid… Turning (4) clockwise to increase the top end pressure setting or counterclockwise to decrease. Is my valve faulty or could there be some kind of obstruction? Thank you. If you follow the discharge tube from the head of the pump down to where it enters the tank, that’s where your check valve is located. KELLOGG AMERICAN UNLOADER VALVE 5/16" TUBING 76281 48069 AIR COMPRESSOR PARTS. This allows for air to escape and for an easy start when the pressure switch turns the motor back on. On my rolair, soon as the tanks are full and the engine goes to idle, a ton of air exits from the discharge exhaust. Piloted unloader valves combine a pilot valve and an unloader valve to run an air compressor continuously. I’ll try this and we if it works. The Load Genie® senses air flow when the compressor is running and closes an unloading orifice port. The piston compressor is an important part of the air compressor. Otherwise, read on. Thanks, Dave, I have an Emglo 60 gallon upright electric compressor. On these types of air compressors the unloader valve is also now known as a throttle valve. Loosen locknut (3) by turning counterclockwise several turns. Required fields are marked *. It sounds like there is some debris stuck in the check valve preventing it from sealing. 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