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Atlas Copco 1089062021 is the loading solenoid valve that switches control air to the inlet valve so the compressor loads and unloads. It is used on Atlas Copco 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 | Atlas Copco 1089062021 |
| Type | Direct acting solenoid valve with DIN plug coil and manual override |
| Coil | As on the original 1089062021 (check the voltage on the old coil) |
| Also written as | 1089-0620-21 |
| Condition | New, aftermarket |
| Stat. HS-Code | 848180 |
| Atlas Copco Part No.(SPM Part No.) |
|---|
| 1089062021(SPM-ACP-2781) |
Compressor will not load or unload
The solenoid valve switches control air to the inlet valve. A burned coil or stuck plunger leaves the compressor stuck loaded or unloaded. Check for voltage at the coil plug first.
Air leaking from the exhaust port
Constant air from the valve exhaust means a worn seat or dirt under the plunger. A new valve stops the leak and the wasted air.
Burned coil
A coil that reads open or short on a meter, or smells burned, needs replacing. Check the supply voltage matches the coil.
Fitting tips
Isolate power and vent the compressor first. Mark the ports before removing the old valve, use thread sealant on the fittings and check for leaks under load.
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 97.96 to 111.63 | 6 Oct 2026 |
| Air Compressor Services | USD 315.00 | 6 Oct 2026 |
| Spare Part Mart | USD 78.37 | Today |
Our price of USD 78.37 is 20% to 75% 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 Atlas Copco 1089062021. It is not made by or affiliated with Atlas Copco; the Atlas Copco part number is used only to show what it replaces.
It fits machines that take Atlas Copco 1089062021. 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 ZIP or postcode.
Live rates for the quantity selected, delivered to your door. Confirmed at checkout.
