02250050-612
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02250050-612
Sullair Minimum Pressure Check Valve Kit Replacement - 02250050-612

Sullair Minimum Pressure Check Valve Kit Replacement - 02250050-612

Sullair ReplacementSKU: 02250050-612
Price:
$136.00
Stock:
In Stock

Description

Sullair Minimum Pressure Check Valve Kit Replacement - 02250050-612

Maintain proper internal pressure and dependable compressor operation with the Sullair Minimum Pressure Check Valve Kit Replacement - 02250050-612, a repair kit designed for compatible Sullair minimum pressure and check valve assemblies. This kit services the valve components responsible for maintaining the internal pressure needed for proper lubricant circulation and separator performance while also helping prevent compressed air from flowing backward through the system. Replacing worn or leaking valve components can help restore pressure control, reduce backflow, and support reliable compressor performance.

  • Maintains Minimum Internal Pressure: Helps preserve the pressure required for proper lubricant circulation and dependable separator operation.
  • Helps Prevent Reverse Airflow: Supports the check valve function that helps stop compressed air from flowing backward through the compressor system.
  • Minimum Pressure Valve Repair Kit: Sullair parts documentation specifies kit 02250050-612 for maintenance of the minimum pressure valve assembly.
  • OEM Compatible Replacement: Built as a replacement for Sullair part number 02250050-612 to support proper valve sealing, pressure control, and compressor reliability.

Help restore dependable pressure regulation and check valve performance with the Sullair Minimum Pressure Check Valve Kit Replacement - 02250050-612, a practical repair solution for compatible Sullair compressor applications.

Why Choose Us?

  • OEM-Equivalent Quality: Our parts meet or exceed OEM standards - at a fraction of the price. You're not paying extra for a logo.
  • Not Just Another Marketplace: We're not just a place to buy parts or oil. We're compressor experts who can provide personalized guidance and reliable support.
  • All Brands, No Restrictions: Unlike many distributors who are tied to OEM agreements, we sell and service parts for all major compressor brands. Can't find what you need? We'll help you get it.
  • USA-Based Support: Talk to real people in Greenville, SC, who know compressors and are ready to help.

Still curious? Learn more about our Inlet to Outlet™ Promise and see why so many customers trust us as their go-to compressor partner.

Other Sullair Replacement Parts:

In addition to the Sullair Minimum Pressure Check Valve Kit Replacement - 02250050-612, we stock replacement parts for Sullair Air Filters, Sullair Oil Filters, Sullair Separators, Sullair Oil and more so you can maximize the performance of your Sullair Compressors.

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Frequently Asked Questions

Is the 02250050-612 minimum pressure check valve kit compatible with my Sullair compressor?

The 02250050-612 is a Sullair minimum pressure/check valve repair kit used on compatible Sullair rotary screw compressors.

Sullair documentation specifically confirms the kit on ES-8 Series compressors in:

  • 15 HP
  • 20 HP
  • 25 HP
  • 30 HP

configurations.

Always verify 02250050-612 in the compressor parts manual and confirm the model and serial number before ordering. Not sure? Reach out with your compressor model and serial number and we’ll help confirm compatibility. 

What does the 02250050-612 kit repair?

The 02250050-612 repairs the compressor’s minimum pressure/check valve assembly.

That valve performs two important functions:

  • Maintains minimum internal compressor pressure during operation
  • Prevents downstream compressed air from flowing backward into the compressor during unload or shutdown

Is the 02250050-612 a complete minimum pressure valve?

No.

The 02250050-612 is documented by Sullair as a repair kit for the minimum pressure/check valve, rather than the entire valve housing or drive housing assembly.

It is intended to rebuild the serviceable internal components of the existing valve.

What are the signs that the minimum pressure/check valve may need rebuilding?

Possible symptoms include:

  • Compressor struggles to build proper internal pressure
  • Low sump pressure
  • Delayed pressure delivery
  • Excessive pressure remaining downstream after shutdown
  • Backflow into the compressor
  • Abnormal unloading behavior
  • Air leakage through the valve
  • Valve sticks open or closed
  • Compressor pressure behaves inconsistently

Other control-system problems can cause similar symptoms, so the valve should be diagnosed before rebuilding.

Is this an OEM part?

This is an OEM-equivalent replacement minimum pressure check valve kit designed to meet the same performance standards as the original Sullair kit.  

How difficult is it to install?

Installing the 02250050-612 is generally a moderate to advanced compressor repair because it requires disassembling and rebuilding part of the compressor’s pressurized minimum pressure/check valve assembly.

Before service:

  • Shut the compressor down completely
  • Disconnect and lock out electrical power
  • Fully depressurize the compressor
  • Bleed the sump to zero internal pressure
  • Allow the compressor and lubricant to cool
  • Prevent automatic restart

The repair generally involves accessing the minimum pressure valve in the drive housing, removing the valve cap and internal components, inspecting the valve bore and reusable parts, replacing the applicable kit components and seals, and reassembling the valve correctly.

A technician familiar with rotary screw compressor service should normally perform this repair. Incorrect assembly can cause low sump pressure, excessive internal pressure, air leakage, backflow, or lubrication problems.

Do you carry other parts for Sullair?

Absolutely. We stock a range of air filters, oil filters, separators, synthetic oils, and many other maintenance parts for Sullair equipment. If you don’t see what you need, just ask and we’ll help you find it.

How do I know which oil to use in my Sullair compressor?

Stationary rotary screw compressors may have specific oil requirements that differ from reciprocating or portable units. To make sure you’re using the right lubricant for your machine, check out our full guide here: Choosing the Right Oil for your Sullair Compressor. It covers the recommended options for rotary screw compressors and helps you match your compressor with the proper oil.

Where do your products ship from?

All parts ship from our Greenville, South Carolina warehouse. Our USA-based team ensures fast shipping and dependable customer support whenever you need assistance.