2901021704 Oil Stop/Check Valve Kit for Atlas Copco Compressor

The 2901021704 is a genuine Atlas Copco oil stop (non-return) valve kit for Atlas Copco rotary screw compressors. The oil stop / non-return valve prevents oil flowing back into the airend when the compressor stops, avoiding oil blow-back and hard starts. This kit renews the valve for reliable stop/start operation.

When to fit the oil stop valve kit

A worn 2901021704 oil stop valve causes oil blow-out at the inlet, oil carryover on start-up, or difficult starting. The genuine kit restores correct non-return sealing.

Technical specifications

Compatible compressors

The 2901021704 oil stop (non-return) valve kit is fitted to Atlas Copco Atlas Copco rotary screw compressors. Because oil stop (non-return) valve kit fitment can change between models and production runs, send us your compressor model and serial number and we will confirm 2901021704 is correct before you order.

Why order the 2901021704 from us

Every 2901021704 we supply is a genuine Atlas Copco part drawn from the OEM supply chain — never an imitation, refurbished or second-hand unit. Orders ship worldwide by express, air or sea freight, and we can provide inspection photos and documentation on request. Stock is available now — request a quote and our team will reply with price and lead time.

Reference & assembly view

Frequently asked questions

Which compressors does the 2901021704 fit? It is a genuine Atlas Copco oil stop (non-return) valve kit. Send us your compressor model and serial number and we will confirm 2901021704 is the correct part before you order.

Is this a genuine Atlas Copco part? Yes. The 2901021704 is a genuine OEM Atlas Copco part, sourced through the official supply chain — no copies or refurbished units.

How quickly can it ship? The 2901021704 is in stock for immediate dispatch, with express, air and sea freight options worldwide. Request a quote for exact price and lead time.