Ingersoll-Rand 24100042 Intake Valve Assembly for Screw Air Compressors

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. This reduces restriction and improves volumetric efficiency, directly increasing engine power and torque.
• Exceptional Heat Resistance: Manufactured from high-performance, heat-resistant alloys such as Silicon Chromium Steel (SilChrome) or Inconel for extreme-duty applications. This allows it to withstand intense and cyclical thermal loads from combustion without warping or burning.
• Optimized Weight & Strength: The stem is hardened and ground for minimal friction, while the head is designed to be as light as possible without sacrificing strength. This reduces valve train inertia, allowing for higher engine RPMs and more aggressive cam profiles.
• Superior Sealing Surface: The valve face is machined to a precise angle (typically 45° or 30°) and often hardened or stellite-faced to ensure a perfect, leak-tight seal against the cylinder head seat. This prevents compression loss and power leakage.
• Durability & Wear Resistance: Engineered to resist wear from constant impacting on the valve seat, guide wear, and the corrosive effects of hot combustion gases.
• Custom Configurations: Available in various head designs (flat, tulip, semi-tulip) and sizes to match specific engine performance goals, from OEM replacement to high-performance racing.

1. Intake Stroke: The camshaft lobe pushes on the valve lifter, rocker arm, or follower, compressing the valve spring and opening the intake valve.
2. Air/Fuel Admission: The piston moves downward, creating a vacuum that draws the air-fuel mixture through the open valve and into the cylinder.
3. Valve Closing: As the camshaft continues to rotate, the lobe moves away, allowing the valve spring to snap the valve shut, sealing the combustion chamber.
4. Compression & Power Strokes: The sealed chamber allows for proper compression of the mixture, followed by combustion, forcing the piston down. The intake valve remains tightly closed during these phases.

• Loss of Power & Performance: A valve that doesn't seal properly (due to burning, warping, or carbon buildup) leaks compression, leading to a noticeable loss of engine power and rough idling.
• Poor Fuel Economy: Incomplete combustion due to incorrect air-fuel ratios from leaking valves wastes fuel.
• Engine Misfires: Severe leakage can cause a cylinder to misfire completely.
• Catastrophic Engine Failure: A valve that breaks can collide with the piston, causing devastating and expensive damage to the entire engine.

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

• Automotive Engines: Passenger cars, trucks, and motorcycles.
• Commercial & Heavy-Duty Vehicles: Diesel engines in buses, semi-trucks, and construction equipment.
• Marine Engines: Inboard and outboard motors for boats and ships.
• Small Engines: Lawnmowers, generators, and power washers.
• High-Performance & Racing Engines: Built with specialized materials and designs for maximum airflow and reliability at extreme RPMs.

• OEM Precision & Quality: Manufactured to meet or exceed strict Original Equipment Manufacturer tolerances for fit, performance, and durability. Perfect for engine rebuilds and repairs.
• Advanced Material Science: We use the optimal alloy for each application, ensuring longevity and resistance to heat, corrosion, and wear.
• Proven Performance: Our valves are tested for cycle fatigue, tensile strength, and thermal stability to ensure they perform reliably under the most demanding conditions.
• Complete Engine Health: Using our high-quality intake valves ensures proper compression, efficient combustion, and protects the entire valve train and engine from damage.
• Expert Support: We provide technical data to help you select the correct valve for your specific engine model and performance requirements.