Gardner Denver Intake Valve 89805179 for Air Screw Compressor

An Intake Valve is a critically engineered component within an internal combustion engine, responsible for precisely controlling the admission of the air-fuel mixture (in gasoline engines) or air alone (in diesel engines) into the combustion chamber. It operates in a relentless cycle of opening and closing, synchronizing with the engine's pistons to seal the chamber during compression and combustion. Its design, timing, and integrity are fundamental to achieving optimal volumetric efficiency, power output, fuel economy, and emissions control.

• Precision Engineered for Flow: The valve head and stem are aerodynamically designed to maximize airflow into the cylinder, improving volumetric efficiency and increasing engine power.
• Exceptional Heat Resistance: Manufactured from high-performance alloys like Silicon Chromium Steel (SilChrome) or Inconel for extreme-duty applications.
• Optimized Weight & Strength: Hardened stem for minimal friction with lightweight yet strong head design for higher engine RPMs.
• Superior Sealing Surface: Precisely machined valve face (typically 45° or 30°) ensures leak-tight seal against cylinder head seat.
• Durability & Wear Resistance: Engineered to resist wear from constant impacting and corrosive combustion gases.
• Custom Configurations: Available in various head designs (flat, tulip, semi-tulip) and sizes for OEM replacement to high-performance racing.

1. Intake Stroke: Camshaft lobe pushes to open the intake valve.
2. Air/Fuel Admission: Piston movement creates vacuum drawing mixture through open valve.
3. Valve Closing: Valve spring snaps valve shut, sealing combustion chamber.
4. Compression & Power Strokes: Intake valve remains tightly closed during these phases.

• Loss of power and performance due to compression leaks
• Poor fuel economy from incomplete combustion
• Engine misfires from severe leakage
• Potential catastrophic engine failure from valve breakage

Intake valves are fundamental components in virtually every type of internal combustion engine:

• Automotive engines (cars, trucks, motorcycles)
• Commercial & heavy-duty vehicles (buses, semi-trucks, construction equipment)
• Marine engines (boats, ships)
• Small engines (lawnmowers, generators)
• High-performance & racing engines

• OEM Precision & Quality: Manufactured to meet or exceed strict OEM tolerances
• Advanced Material Science: Optimal alloys for heat, corrosion, and wear resistance
• Proven Performance: Tested for cycle fatigue, tensile strength, and thermal stability
• Complete Engine Health: Ensures proper compression and efficient combustion
• Expert Support: Technical data for correct valve selection