Product Overview
The Intake Valve, also named Inlet Valve, is the core throat control component for oil‑injected screw air compressors. Mounted at the suction port of airend, it integrates air‑flow regulation, load‑unload control, blow‑down and anti‑back‑flow functions. Controlled by solenoid valve and servo cylinder, it adjusts suction air volume according to actual air demand, directly determining compressor output, energy consumption and system safety. It is an indispensable spare part for stable and energy‑saving compressor operation.
Main Functions
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Load & Unload Control for Energy Saving: Fully opens for full‑load air output when high air demand. Closes to unload once system pressure reaches set point, cuts down no‑load power consumption and saves electricity cost.
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Light‑load Startup for Motor Protection: Keeps closed upon startup to realize light‑load starting, reduces motor inrush current and protects motor from heavy‑current damage.
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Blow‑down & Anti‑oil‑spray Check Function: Releases residual internal pressure during shutdown. Built‑in non‑return structure prevents oil‑gas mixture back‑flow and oil spraying, avoids airend reverse rotation risk.
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Capacity Modulation & Pressure Stabilization: Selected versions support proportional modulation, automatically adjust valve opening to stabilize output pressure and minimize pressure fluctuation.
Key Features & Advantages
✅ Heavy‑duty durable valve body: High‑pressure cast aluminum alloy housing, anti‑corrosion and anti‑impact, fit harsh industrial environment with high temperature and heavy oil mist. Valve spool and springs pass fatigue test for long service life. ✅ Excellent sealing performance: Oil‑resistant & high‑temperature resistant FKM / NBR seals. Tight shut‑off prevents air leakage during unload phase and avoids rapid pressure drop. ✅ Optimized flow path & low pressure drop: Fluid‑optimized inner channel minimizes intake resistance without sacrificing total air output. ✅ Fast & responsive action: Combined solenoid and servo cylinder deliver quick open‑close response, smooth load‑unload transition and less valve sticking failure. ✅ Wide OEM‑replacement compatibility: Direct replacement for original valves of mainstream compressor brands. Multiple flange & thread sizes, easy installation for quick swap‑out. ✅ Modular design for easy maintenance: Wear parts including seals, springs and solenoid can be replaced separately, lowering long‑term maintenance cost.
General Specifications
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Application: Oil‑injected rotary screw air compressor
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Working pressure: 0‑15 bar
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Working temperature: ‑20℃ ~ +120℃
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Body material: Cast aluminum alloy; Seals: FKM / NBR; Spring: Spring steel
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Actuation: Pneumatic control via solenoid valve (24V DC / 110V / 220V AC optional)
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Connection: Flange / thread, multiple bore sizes available
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Compatible with: Atlas Copco, Sullair, Ingersoll Rand, Fusheng, Hanbell and other screw compressors
When You Need to Replace Intake Valve
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Compressor fails to load, pressure cannot build up, insufficient air output
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Fast pressure drop and air leakage during unload status
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Excessive motor starting current, frequent overload tripping
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Oil‑spraying or abnormal reverse‑rotation noise after shutdown
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Valve spool sticking, slow load/unload response and violent pressure fluctuationjiadeairpo...
About Us — Reliable Supplier
We are a one‑stop professional supplier of air compressor filter elements and spare parts, with more than 10‑year manufacturing & supplying experience, direct factory supply. Our product portfolio covers full‑range compressor filters, valves, repair kits and related accessories. Every intake valve goes through strict pressure and cycle test before shipment. This product comes with 1‑year warranty. We support bulk wholesale, OEM service and OEM part‑number matching service, delivering cost‑effective maintenance spare‑part solutions for worldwide industrial clients.
Note: Please confirm your compressor model, OEM part number and connection size before placing order. Feel free to contact our technical team for part‑selection support.
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