PZA Series Cross-Shaped Four-Way Quick Coupling - English Translation

I. Basic Concept

II. Structural Features

• Cross-Shaped Four-Way Design: All four sides can connect hoses of the same specification, enabling one-inlet-three-outlet or multi-directional distribution.
• Push-In Connection: No tools required; directly insert the air tube into the bottom of the coupling to form a secure seal.
• Oval Release Ring: Simply press the collet with your thumb during disassembly to easily pull out the air tube.
• Rotatable Design: The coupling body can rotate freely after installation, facilitating adjustment of tube connection directions.
• Sealing Technology: All threads are pre-coated with PTFE thread sealant to ensure high airtightness.

III. Specification Parameter Comparison

IV. Material Comparison (Advantages & Disadvantages)

1. Plastic Material (PBT/POM)

• Advantages: Lightweight, cost-effective, good insulation, easy installation.
• Disadvantages: Limited temperature and pressure resistance (generally ≤60℃, ≤1.0MPa), poor aging resistance.
• Application Scenarios: General industrial automation, pneumatic tools, low-pressure pneumatic systems.

2. Copper Material (Nickel-Plated Copper / Nickel-Plated Zinc Alloy)

• Advantages: Good pressure resistance (1.0~1.5MPa), excellent electrical conductivity, high mechanical strength.
• Disadvantages: Higher cost, prone to oxidation (nickel plating required for protection).
• Application Scenarios: Environments requiring electrical conductivity, medium-pressure pneumatic systems.

3. Stainless Steel Material (304/316)

• Advantages: Excellent corrosion resistance, high temperature and pressure resistance (up to 200℃, 2.0MPa), long service life.
• Disadvantages: Highest price.
• Application Scenarios: Food and medical equipment, chemical environments, high-temperature and high-pressure systems.

V. Installation & Usage Instructions

1. Installation Steps

1. Ensure the air tube cut surface is perpendicular and free of burrs.
2. Fully insert the air tube into the bottom of the coupling (a "click" sound indicates proper installation).
3. Gently pull the air tube to confirm a secure connection.

2. Disassembly Method

• Press the oval release ring with your thumb and gently pull the air tube to remove it.

3. Maintenance Precautions

• After multiple insertions and removals, cut off the worn part of the air tube before reuse.
• Regularly inspect the sealing ring and replace it promptly if aging occurs.

VI. Application Scenarios

• Industrial Automation Production Lines: Distribution control for multi-station pneumatic systems.
• Pneumatic Tool Connection: Multi-directional air supply for tools such as pneumatic screwdrivers and spray guns.
• Medical Equipment: Especially for occasions requiring clean air sources (stainless steel material recommended).
• Laboratory Instruments: Precision pneumatic control systems.
• Furniture Manufacturing: Pneumatic fixture systems for woodworking machinery.