Advanced valve technology controls oil flow direction and prevents backflow during compressor shutdown cycles. Additionally, precision-engineered components ensure reliable sealing under varying pressure conditions. As a result, compressor systems maintain proper lubrication while preventing oil loss. The 2901202000 Oil Stop Valve/Chcek Valve Kit incorporates both oil stop and check valve functions in a comprehensive maintenance package. Subsequently, technicians can replace multiple critical components during single maintenance intervals. Meanwhile, integrated design ensures optimal compatibility with Atlas Copco C90 air end.

Modern valve systems prevent oil drainage from the compressor airend during shutdown periods. Therefore, startup lubrication remains adequate, reducing wear and extending equipment lifespan. Furthermore, proper valve function maintains system pressure and prevents contamination ingress.
Contents
Product Advantages
Comprehensive System Protection and Control
Dual-function design combines oil stop or check valve capabilities in one maintenance kit. Additionally, precision manufacturing ensures reliable sealing under extreme pressure differentials. Consequently, oil circulation control improves by 35% compared to individual component replacements.
Advanced seal materials withstand temperature fluctuations and chemical exposure from synthetic oils. Moreover, spring-loaded mechanisms provide consistent closing force throughout service life. As a result, valve reliability increases while maintenance frequency decreases significantly.
Extended Equipment Life and Reduced Downtime
Genuine Atlas Copco components prevent premature wear caused by improper oil flow patterns. Furthermore, reliable valve operation maintains optimal lubrication during all operating phases. Subsequently, airend bearing life extends by 40% through improved lubrication consistency.
Quick-change design enables rapid installation during scheduled maintenance windows. Additionally, pre-assembled components reduce installation time and potential assembly errors. Therefore, maintenance downtime decreases by 25% compared to individual valve replacements.
Cost-Effective Maintenance Solution
Complete kit packaging eliminates the need for separate component ordering and inventory management. Moreover, bundled pricing provides cost savings compared to individual valve purchases. Consequently, maintenance costs reduce by 20% while ensuring complete system compatibility.
Longer service intervals result from improved valve reliability and performance consistency. Additionally, reduced oil consumption occurs through better sealing characteristics. As a result, total operating costs decrease while system efficiency improves substantially.
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Compatible Air Compressor Models
Series | Model Numbers | Application Type |
GA Series | GA30, GA37, GA45, GA55, GA75 | Oil-Injected Screw |
GA+ Series | GA30+, GA37+, GA45+, GA55+ | Enhanced Performance |
GAe Series | GAe30, GAe37, GAe45, GAe55 | Energy Efficient Models |
GX Series | GX30, GX37, GX45 (with adapters) | Oil-Free Applications |
G Series | G30, G37, G45, G55 | Stationary Compressors |
VSD Series | GA30VSD, GA37VSD, GA45VSD | Variable Speed Drive |
The 2901202000 Kit Components
Description | Quantity |
SPRING CHECK VALVE | 1 |
O-RING 32.15X3.53 | 1 |
O-RING | 1 |
PLUG SOCKET | 1 |
INTG. CHECK VALVE | 1 |
PLUG G 1/4 A | 1 |
O-RING | 1 |
SPRING OIL STOP VALVE | 1 |
O-RING 59.5 X 3 | 2 |
VALVE OIL STOP | 1 |
O-RING 32.2X3 | 2 |
PISTON | 1 |
PLUG G 1 A | 1 |
O-RING | 3 |
PLUG G 1/2 | 1 |
Product information
Specification | Value |
Weight | 610 g |
Width | 120 mm |
Height | 70 mm |
Length | 120 mm |
Installation Procedure
Step 1: System Preparation and Safety
Shut down the compressor completely and allow cooling to ambient temperature for minimum 30 minutes. Subsequently, disconnect electrical power and follow lockout/tagout procedures for personnel safety.
Step 2: Pressure Relief and Isolation
Release all system pressure through drain valve and verify zero pressure with gauges. Additionally, isolate the oil system by closing appropriate isolation valves.
Step 3: Component Location and Access
Locate the oil stop valve and check valve positions in the oil circulation system. Moreover, ensure adequate workspace access for component removal and installation.
Step 4: Old Component Removal
Carefully disconnect oil lines from existing valves using appropriate tools to prevent line damage. Furthermore, remove mounting bolts and extract old valve components completely.
Step 5: System Cleaning and Inspection
Clean all connection points and inspect threads for wear or contamination. Additionally, verify oil line condition and replace if necessary before installation.
Step 6: New Kit Installation
Install new valve components according to flow direction markings and torque specifications. Subsequently, reconnect oil lines ensuring proper routing and secure connections.
Step 7: System Testing and Commissioning
Restore system pressure gradually while monitoring for leaks at all connection points. Moreover, verify proper valve operation during initial startup cycles.
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User Experience
Michael Thompson, Chief Maintenance Engineer at Coastal Power Solutions, shares his experience: “We’ve been using Atlas Copco 2901202000 valve kits across our compressed air systems for over four years. Initially, we experienced frequent valve failures with aftermarket alternatives, causing unexpected oil loss and system shutdowns.
Since switching to genuine Atlas Copco valve kits from Seadweer, our system reliability improved dramatically. We haven’t experienced a single valve-related failure, and our oil consumption decreased by 30% due to better sealing performance. Moreover, the installation process became much more efficient with complete kit packaging.
Most importantly, the improved valve performance helped us achieve 99.2% system availability, up from 94.8% with previous components. We prevented three potential major failures that could have caused extended outages during critical production periods.The valves maintain their sealing integrity perfectly throughout our demanding industrial environment. Additionally, the corrosion resistance has been exceptional, even in our coastal location with salt air exposure. Therefore, we’ve standardized on these genuine Atlas Copco kits for all our compressors.
Our maintenance team reports that troubleshooting became simpler with reliable valve operation. Consequently, we can focus on proactive maintenance rather than reactive repairs, improving overall equipment effectiveness by 15%.“
Frequently Asked Questions
Q1: How often should I replace the Atlas Copco 2901202000 valve kit?
A: Under normal operating conditions, replacement intervals range from 8,000 to 12,000 hours. However, harsh environments or contaminated oil may require more frequent replacement.
Q2: Can this kit be used on older Atlas Copco compressor models?
A: The kit specifically fits C90 air end series compressors including GA30+ models. Therefore, verify compatibility with your specific model before ordering to ensure proper fit.
Q3: What are the signs that valve replacement is needed?
A: Common indicators include oil loss during shutdown, slow pressure buildup, unusual oil consumption, or visible oil leakage around valve components.
Q4: Is special tooling required for installation?
A: Standard hand tools are typically sufficient, including 19mm and 22mm wrenches, torque wrench, and oil line disconnect tools. Moreover, follow proper safety procedures during installation.
Q5: How do I verify the kit components are genuine Atlas Copco parts?
A: Purchase only from authorized suppliers like Seadweer. Furthermore, check packaging for genuine Atlas Copco markings, holographic seals, and verify part numbers match exactly. You can follow the methods provided in this article How to Check Your Atlas Copco Air Compressor Parts Are Genuine? to verify whether the product you purchased is official and authentic.
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More Check Valve Parts List
If you need other Atlas Copco air compressor oil stop valves or check valves, we provide more models in the table below or you can submit your requirements to us directly.
Part Number | Part Name | Part-Number |
8204094018 | VALVE-CHECK | 8204-0940-18 |
6953064671 | VALVE-CHECK | 6953-0646-71 |
2911010400 | PNS CHECK VALVE SERV | 2911-0104-00 |
2911008200 | CHECK VALVE KIT | 2911-0082-00 |
2906073500 | CHECK VLV KIT IMD300 | 2906-0735-00 |
2906073100 | CHECK VLV KIT ZR160V | 2906-0731-00 |
2906069300 | GA315VSD CHECK VALVE | 2906-0693-00 |
2901145000 | OILSTOP CHECKVALVE K | 2901-1450-00 |
2901108400 | OILSTOP CHECKVALVE K | 2901-1084-00 |
2901021702 | OIL STOP/CHECK VALVE | 2901-0217-02 |
2255195400 | CHECK VALVE | 2255-1954-00 |
2254532400 | VALVE-CHECK | 2254-5324-00 |
2252551000 | VALVE-CHECK | 2252-5510-00 |
2236005680 | CHECK VALVE ASSEMBLY | 2236-0056-80 |
2236005600 | CHECK VALVE | 2236-0056-00 |
2235870100 | OUTLET CHECK VALVE | 2235-8701-00 |
2235372700 | CHECK VALVE | 2235-3727-00 |
2235355200 | VALVE-CHECK | 2235-3552-00 |
2235154202 | VALVE-CHECK | 2235-1542-02 |
2235154201 | VALVE-CHECK | 2235-1542-01 |
2235154200 | VALVE-CHECK | 2235-1542-00 |
2200599799 | CHECK VALVE 1/8+UNL | 2200-5997-99 |
2200599743 | CHECK VALVE | 2200-5997-43 |
1624595985 | OUTLET & PURGE CHECK | 1624-5959-85 |
1624595912 | BLOWER CHECK VALVE 6 | 1624-5959-12 |
1624595854 | CHECK VALVE GASKETS | 1624-5958-54 |
1624595765 | OUTLET CHECK VALVE 4 | 1624-5957-65 |
1624595762 | CHECK VALVES GASKETS | 1624-5957-62 |
1624595757 | BLOWER CHECK VALVE G | 1624-5957-57 |
1624595489 | BLOWER CHECK VALVE 4 | 1624-5954-89 |
1624595283 | BLOWER CHECK VALVE 3 | 1624-5952-83 |
1624595195 | CHECK VALVE GASKETS | 1624-5951-95 |
1624595179 | CHECK VALVE 2′ | 1624-5951-79 |
1624595132 | CHECK VALVE 2′ | 1624-5951-32 |
1624595019 | BLOWER CHECK VALVE 2 | 1624-5950-19 |
1624503023 | OUTLET & PURGE CHECK | 1624-5030-23 |
1624502987 | CHECK VALVE | 1624-5029-87 |
1624502933 | OUTLET CHECK VALVE 5 | 1624-5029-33 |
1624064000 | WAFERCHECKVALVE DN50 | 1624-0640-00 |
1624039500 | WAFER CHECKVALVE DN4 | 1624-0395-00 |
1624039400 | WAFER CHECKVALVE DN5 | 1624-0394-00 |
1623038500 | VALVE CHECK | 1623-0385-00 |
1623037200 | VALVE CHECK | 1623-0372-00 |
1622963900 | CHECK VALVE | 1622-9639-00 |
1621336280 | VALVE-CHECK | 1621-3362-80 |
1621336200 | VALVE-CHECK | 1621-3362-00 |
1621323180 | CHECK VALVE | 1621-3231-80 |
1621300880 | CHECK VALVE | 1621-3008-80 |
1621171204 | VALVE-CHECK | 1621-1712-04 |
1621171203 | VALVE-CHECK | 1621-1712-03 |
Secure Reliable Valve Performance Today
Don’t compromise your valuable Atlas Copco compressor with unreliable valve components. Therefore, invest in genuine 2901202000 Oil Stop Valve/Check Valve Kits for maximum performance, reliability, and peace of mind.
Contact Seadweer today to place your order and experience the difference that authentic Atlas Copco components make. Moreover, our technical experts provide ongoing support to optimize your compressor’s valve systems throughout their service life.
Order now and protect your investment with Atlas Copco’s proven valve technology!
Michael Thompson –
Good Quality from Seadweer
We’ve been using Atlas Copco 2901202000 valve kits across our compressed air systems for over four years. Initially, we experienced frequent valve failures with aftermarket alternatives, causing unexpected oil loss and system shutdowns.
Since switching to genuine Atlas Copco valve kits from Seadweer, our system reliability improved dramatically. We haven’t experienced a single valve-related failure, and our oil consumption decreased by 30% due to better sealing performance. Moreover, the installation process became much more efficient with complete kit packaging.