Minimum Pressure Valve for Ingersoll Rand Oil-Injected Screw Compressor
High-quality Minimum Pressure Valve 39490693 for Ingersoll Rand oil-injected screw compressors. Ensures stable system pressure, prevents backflow, and guarantees long service life with precision sealing and ISO-certified quality.
| Application |
Air Compressor |
|---|---|
| Material |
Aluminum ,Stainless Steel |
The Minimum Pressure Valve (MPV) 39490693 is a critical safety and performance component designed for Ingersoll Rand oil-injected screw compressors. It ensures that the compressor system maintains the correct minimum pressure level required for stable operation, lubrication integrity, and safe load transitions. When the system pressure is below a specific threshold, the MPV closes to prevent backflow and safeguard the compressor from internal damage.
This valve is engineered with precision machining and strict quality standards to guarantee consistent pressure control, smooth opening response, and long-term reliability in continuous industrial applications.
Function and Working Principle
In an oil-injected screw compressor, the MPV plays a dual role — regulating minimum discharge pressure and preventing backflow of compressed air into the airend during shutdown or unloading.
When the compressor starts, the 39490693 valve remains closed until the pressure inside the oil separator tank reaches the required setpoint (typically 4–5 bar). Once achieved, the valve opens progressively, allowing air to flow smoothly into the system while maintaining stable lubrication and cooling within the compressor.
Its spring-loaded poppet mechanism and precision-ground seat ensure accurate response, minimal leakage, and reduced pressure fluctuation under varying load conditions.
Key Features and Advantages
- Precision Pressure Regulation: Maintains stable system pressure and optimal oil circulation during start-up and load transitions.
- Reliable Sealing Performance: High-precision seat and stainless-steel poppet design minimize leakage and ensure long service life.
- Durable Construction: Manufactured from high-grade aluminum alloy housing and treated steel internals, resistant to corrosion and oil-carbon buildup.
- Smooth Opening Characteristics: Engineered flow path reduces vibration and pressure surge during operation.
- Easy Maintenance: Modular structure allows simple disassembly for inspection, cleaning, or seal replacement.
- Direct Replacement for OEM 39490693: Fully compatible with Ingersoll Rand original compressor units, with identical installation dimensions and performance parameters.
Material and Surface Treatment
The valve body is made of hard-anodized aluminum, ensuring high resistance to oxidation and oil corrosion. Internal components, including the spring and valve seat, are constructed from heat-treated stainless steel to prevent deformation under high temperature and pressure.
All sealing rings are oil- and temperature-resistant fluororubber (FKM), maintaining elasticity even under continuous exposure to lubricated compressed air.
Quality Assurance
Each minimum pressure valve undergoes multiple stages of quality control:
- Pressure endurance testing at 1.5× rated working pressure.
- Flow calibration to ensure consistent pressure-opening characteristics.
- Leak test using nitrogen and oil mist simulation.
All units comply with ISO 9001:2015 and CE quality management standards, ensuring performance and reliability equivalent to OEM parts.
Installation and Maintenance Tips
- Always install the MPV vertically to ensure proper function of the internal spring and valve disc.
- Clean the connecting pipes before installation to prevent carbon or oil residue from affecting sealing performance.
- During periodic maintenance, inspect for oil sludge or carbon deposits that may restrict valve movement.
- Replace sealing rings during each major compressor overhaul for optimal performance.
Proper installation and timely maintenance will significantly extend the service life of both the MPV and the entire airend system.
OEM Reference and Compatibility
- Part Number: 39490693
- Compatible Brand: Ingersoll Rand
- Compressor Type: Oil-injected screw air compressor
- Interchangeable With: OEM and aftermarket valves with equivalent dimensions and pressure settings
Why Choose Our Replacement MPV?
Our 39490693 replacement minimum pressure valve is engineered to meet or exceed the original Ingersoll Rand performance specifications. It is manufactured using CNC precision machining, high-temperature endurance materials, and advanced sealing technologies — ensuring consistent reliability across demanding industrial applications such as manufacturing, automotive, and energy sectors.
MAECENAS IACULIS
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