The small four-cylinder semi-hermetic piston refrigeration compressor (3-9HP) is a commonly-used refrigeration device. It compresses refrigerant gas by virtue of the reciprocating motion of pistons inside the cylinders. Characterized by a simple structure, low cost and easy maintenance, this type of compressor is widely applied in household air conditioners, commercial refrigeration and other fields.

Features and Advantages:

1. Reliability

• Mature technology & compact structure

• Small footprint & minimal space requirement

2. Compliant Performance Metrics

• High-precision machining technology

• CNC-machined compressor housing

• Special processes ensure the concentricity of the three holes

• Excellent dead-center clearance machining technology

3. Stability

• Superior operational stability

• Low machine vibration & noise levels

4. Versatile Operating Conditions

• Compatible with refrigerants such as R22 and R404, meeting international environmental standards

• Suitable for low, medium and high temperature working conditions

5. Electronic Protection Device

• Equipped with a PTC temperature monitoring device to effectively protect the motor

6. Premium Material Selection

• Chrome-plated piston rings, aluminum pistons, hardened crankshafts, low-friction bushings

• Wear-resistant drive components for extended service life

7. Optimized Design

• High-efficiency valve plate assembly design (large refrigerating capacity & low energy consumption)

• High-efficiency suction and discharge compression ratio

• Valve plates forged from imported Swedish steel strips (impact-resistant)

8. Versatility & Interchangeability

• High degree of part commonality for easy disassembly, repair and maintenance