Easy
15-30 minutes
It is a genuine OEM part that is made for Campbell Hausfeld air compressors. The unloader valve is an important component which allows a user to safely drain the air from the tank. Unfortunately, over time it may wear out or get damaged eventually requiring a replacement to ensure your unit operates properly. Note, this high-quality unloader includes multiple parts however it is sold as an individual component. Check the owner\\\'s manual and the diagrams of your model to ensure the correct installation and application. You will need a wrench set and pliers to perform this repair.
Unloader CW210001AV
OEM part for: Campbell Hausfeld
Part Number: CW210001AV
$89.77
In Stock
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Compatibility
This Unloader will fit the following 251 machines. Confirm this part works with your model, and view the detailed model diagrams and repair help we have to offer.
Campbell Hausfeld
Show More Compatible ModelsThis item works with the following types of products:
- Compressor Parts
This part replaces obsolete part #: CW210000AV
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Customer Repair Instructions ?
All our customer repair instructions are solicited directly from other customers just like you who have purchased and replaced this exact part.
Leaked air
Michael - March 13, 2017
👍 7 of 10 people found this instruction helpful
Tool Type
Compressor
Difficulty
Medium
Time
30-60 minutes
Tools Used
, Hex head allen wrench
Parts Used
1. Removed the small bolt that holds the unloader to the back side of the switch.
Note: You have to be careful when removing the unloader. There is a rubber o-ring type seal that comes out when you remove the unloader. Mine fell out on the floor and I couldn't tell which way the seal goes into the unloader as the seal is different on both ends. If not put in properly it could leak again. I guessed and was successful. You get a new rubber seal in the package with the new unloader.
2. Pulled the plastic tube off the unloader.
3. Put the plastic tube back onto the unloader.
4. Installed the rubber o-ring seal.
5. Put the unloader back into the backside of the switch and fastened the small bolt.
Note: You have to be careful when removing the unloader. There is a rubber o-ring type seal that comes out when you remove the unloader. Mine fell out on the floor and I couldn't tell which way the seal goes into the unloader as the seal is different on both ends. If not put in properly it could leak again. I guessed and was successful. You get a new rubber seal in the package with the new unloader.
2. Pulled the plastic tube off the unloader.
3. Put the plastic tube back onto the unloader.
4. Installed the rubber o-ring seal.
5. Put the unloader back into the backside of the switch and fastened the small bolt.
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Unloader valve blew out
Dan - February 17, 2018
👍 3 of 3 people found this instruction helpful
Tool Type
Compressor
Difficulty
Easy
Time
15-30 minutes
Tools Used
Screwdriver, Pliers, Adjustable Wrench
Parts Used
Removed old unloader valve. Cut half inch off the tube. Installed new valve and pushed tubing in till it locked in place.
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Unloaded tube broke off at the unloader
Gaylen - July 24, 2018
👍 1 of 1 people found this instruction helpful
Tool Type
Compressor
Difficulty
Easy
Time
Less than 15 minutes
Tools Used
Wrench Set, None
Simply threaded in the new unloaded and threaded in the new nipple. Then pushed the tube into each end. Turned the compressor on and watched it build pressure and shut off.
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Regulator stopped working
Chris - August 2, 2017
👍 1 of 1 people found this instruction helpful
Tool Type
Compressor
Difficulty
Easy
Time
15-30 minutes
Tools Used
Screwdriver, Wrench Set, plumbers tape
Very easy.
Remove old parts.
Wrap threads with tape.
Install new parts.
Set regulator for desired cutoff psi. (they put wax over screw, remove wax and fill tank to desired psi and turn screw to the left until you hear "click". Regulator psi now set.)
Remove old parts.
Wrap threads with tape.
Install new parts.
Set regulator for desired cutoff psi. (they put wax over screw, remove wax and fill tank to desired psi and turn screw to the left until you hear "click". Regulator psi now set.)
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Air leaking while compressor was running take long time to build pressure.
Jorge - October 27, 2016
👍 3 of 5 people found this instruction helpful
Tool Type
Compressor
Difficulty
Easy
Time
Less than 15 minutes
Tools Used
Wrench Set, Adjustable Wrench
Bought the 2 items that would cause air leak and replaced. Works great now.
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Valve was broken
Brent - March 22, 2020
Tool Type
Compressor
Difficulty
Easy
Time
Less than 15 minutes
Tools Used
, Allen
Parts Used
Remove the ild vakve frim the hose by pressing in on the metal ring, remove hose, install hose into new valve
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Tubing to unloaded broke
William - March 6, 2019
Tool Type
Compressor
Difficulty
Easy
Time
30-60 minutes
Tools Used
Screwdriver, Adjustable Wrench
Parts Used
Removed power to pressure switch
Removed pressure switch
Replaced unloader valve on pressure switch
Reinstalled pressure switch and power wires
Removed pressure switch
Replaced unloader valve on pressure switch
Reinstalled pressure switch and power wires
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Belt stretched...no adjustment on compressor. 2nd switch to go bad.
Billy - February 18, 2019
Tool Type
Compressor
Difficulty
Easy
Time
15-30 minutes
Tools Used
Screwdriver, Socket set, None
Standard replacement nothing special
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leaked air
TED - January 7, 2019
Tool Type
Compressor
Difficulty
Easy
Time
15-30 minutes
Tools Used
Pliers
Parts Used
Replaced check valve, manual recommended
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Pressure switch defective
Eric - December 6, 2018
Tool Type
Compressor
Difficulty
Easy
Time
15-30 minutes
Tools Used
Screwdriver, Adjustable Wrench
Removed pressure gauge, safety valve, unloader hose, and electrical connections from pressure switch.
Removed pressure switch from tank.
Installed replacement pressure switch.
Added pressure gauge safety valve and unloader hose to switch.
Connected electrical wiring.
Removed pressure switch from tank.
Installed replacement pressure switch.
Added pressure gauge safety valve and unloader hose to switch.
Connected electrical wiring.
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Our customer service team are at the ready daily to answer your part and product questions. We have a dedicated staff with decades of collective experience in helping customers just like you purchase parts to repair their products.
All our part reviews are solicited directly from other customers who have purchased this exact part. While we moderate these reviews for profanity, offensive language or personally identifiable information, these reviews are posted exactly as submitted and no alterations are made by our team.
All our customer repair instructions are solicited directly from other customers just like you who have purchased and replaced this exact part. While we moderate these reviews for profanity, offensive language or personally identifiable information, these reviews are posted exactly as submitted and no alterations are made by our team.
Based on data from past customer purchasing behaviors, these parts are most commonly purchased together along with the part you are viewing. These parts may be necessary or helpful to replace to complete your current repair.
All our installation videos are created and produced in collaboration with our in-house repair technician, Mark Sodja, who has helped millions of eReplacementParts customers over the last 13 years repair their products. Mark has years of experience in selling and repairing both commercial and residential products with a specialty in gas-powered equipment.
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