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CompAir 100004439 is the loading solenoid valve that switches control air to the intake valve. It is used on CompAir rotary screw air compressors. This aftermarket valve has the same ports, mounting and coil connector as the original, so it fits where the old one came off.
Sold as one unit. Check the number on your old part, or in the parts manual for your machine, before ordering.
| Part Type | Solenoid Valve |
| Replaces | CompAir 100004439 |
| Type | Brass body solenoid valve with plug-in coil |
| Coil | 24 V, as on the original 100004439; check the voltage on your old coil |
| Condition | New, aftermarket |
| Stat. HS-Code | 848180 |
| CompAir Part No.(SPM Part No.) |
|---|
| 100004439(SPM-ACP-2840) |
Compressor will not load
The solenoid valve switches control air to the intake valve. If the coil or plunger fails, the compressor runs but never loads.
Compressor will not unload or blow down
A valve stuck open or closed stops the machine unloading or venting on stop. Check the coil voltage at the plug first.
Leaking or buzzing valve
Air leaking from the exhaust port or a coil that buzzes or runs hot means the seat or coil is worn.
Fitting tips
Isolate and vent the compressor, note the port and wiring layout, fit new seals, and test loading and unloading before putting it back to work.
We check what other aftermarket sellers charge for this same part. Their prices on the date we checked:
| Seller | Price | Checked |
|---|---|---|
| eBay (4 aftermarket sellers) | USD 129.32 to 149.00 | 6 Oct 2026 |
| Spare Part Mart | USD 103.46 | Today |
Our price of USD 103.46 is 20% to 31% less than these sellers.
Found this part cheaper somewhere else? Send us the listing and we will beat it by 5% under our Price Beat Guarantee. Every order is also covered by our 30 day money back guarantee.
No. It is an aftermarket part made to fit in place of CompAir 100004439. It is not made by or affiliated with CompAir; the CompAir part number is used only to show what it replaces.
It fits machines that take CompAir 100004439. Machines change parts between serial number ranges, so check the number on your old part or in your parts manual.
It has the same ports, mounting and coil connector as the original. Check the coil voltage matches your old valve, mark the ports before removing it, seal the threads and check for leaks under load.
Yes, we ship worldwide. Shipping is calculated at checkout, and every order is covered by our 30 day money back guarantee and price beat guarantee.
Prices depend on your postcode.
In USD for the quantity selected. The exact cost is confirmed at checkout.
