Air Compressor Valve Plate – 1/2.5/3/4P Cylinder Head Replacement

Air Compressor Valve Plate – Precision Cylinder Head Replacement Part

Keep your air compressor running at peak efficiency with this heavy-duty cast iron valve plate. Engineered as a direct replacement for 1, 2.5, 3, and 4-piston (1/2.5/3/4P) air compressor cylinder heads, this component delivers accurate fit, long-lasting durability, and consistent performance across a wide range of compressor models.

Why Choose This Valve Plate?

• High-Quality Cast Iron Construction: Manufactured from premium cast iron for excellent strength, toughness, and resistance to wear under repeated compression cycles.
• Precision-Machined Hole Pitch: High-accuracy hole positioning (approx. 48×62 mm / 1.9×2.4 in) ensures a tight, secure fit with your compressor's cylinder head for optimal airflow and sealing.
• Thermal & Fatigue Resistant: Designed to handle low-cycle and high-cycle thermal fatigue as well as creep stress, delivering safe and reliable operation over extended service life.
• Strict Quality Control: Meets rigorous manufacturing standards for workpiece accuracy, ensuring consistent performance right out of the box.
• Compatible with 3/8" Thread Cylinder Heads: Fits cylinder heads with 3/8 in thread (outer diameter 16 mm), making it a versatile replacement for many common compressor configurations.

Specifications

• Item Type: Valve Plate
• Material: Cast Iron
• Hole Distance of Valve Plate Assembly: Approx. 48×62 mm / 1.9×2.4 in
• Tongue Positioning Hole Distance: Approx. 20 mm / 0.8 in
• Tongue Length: Approx. 57 mm / 2.2 in
• V-Piece Positioning Hole Distance: Approx. 50 mm / 2 in
• Applicable Cylinder Head Thread: 3/8 in (Outer Diameter 16 mm)
• Compatible With: 1P, 2.5P, 3P, 4P air compressors
• Country of Origin: Made in China

Package Contents

• 1 × Valve Plate Set

Important Notes

• Actual color may vary slightly from product images due to monitor settings and lighting conditions.
• Please allow slight measurement deviation (±1–2 mm) due to manual measuring methods.
• Please verify your compressor's cylinder head thread size and hole pitch dimensions before ordering to ensure compatibility.

Related Products You May Need

Looking for other precision hardware and tools? Check out these related items:

• 1-Inch Threaded Brass Ball Valve – Water, Gas & Oil Flow Control
• 0–60MPa Pressure Gauge for S60H Diesel Injector Nozzle Tester

For general tool safety guidelines and best practices when working with pressurized air equipment, visit OSHA – Pneumatic Tools Safety.

Learn more: Air compressor

Frequently Asked Questions

Q: What air compressor sizes is this valve plate compatible with?

A: This valve plate is designed for use with 1P, 2.5P, 3P, and 4P air compressor cylinder heads. It fits cylinder heads with a 3/8 in thread and 16 mm outer diameter. Always confirm your compressor's specifications against the listed dimensions before purchasing.

Q: What material is the valve plate made from, and why does it matter?

A: The valve plate is made from high-quality cast iron, which provides excellent hardness, toughness, and resistance to thermal fatigue. Cast iron is a preferred material for compressor components because it withstands repeated compression cycles and temperature fluctuations without deforming.

Q: How do I know if this valve plate will fit my air compressor?

A: Check your compressor's cylinder head thread size (should be 3/8 in / 16 mm outer diameter) and compare the hole pitch dimensions (48×62 mm assembly hole distance, 20 mm tongue positioning hole distance, and 50 mm V-piece positioning hole distance) against your existing valve plate or compressor manual.

Q: Is this a complete replacement kit or just the valve plate?

A: This listing includes 1 complete valve plate set. It is intended as a direct replacement part for the cylinder head assembly. Additional compressor components such as gaskets or bolts may need to be sourced separately depending on your specific repair needs.