Water rotary union

for oilfor compressed airhigh-pressure

Product Overview
Our 1/2" NPT Stainless Steel 360° Pneumatic Rotary Joint is engineered for continuous rotation applications where reliable media transfer and zero leakage are critical. Built with an overall stainless steel body and a precision-balanced fully closed mechanical seal, this swivel joint delivers stable performance in compressed air systems, high-pressure car washers, automatic hose reels, and winding equipment.

Design & Construction
Compact outer diameter of 49mm designed to fit in space-constrained installations. Fully enclosed seal structure prevents external contamination; balanced design minimizes friction and heat build-up during high-speed rotation.

Key Parameters at a Glance

• Connection: 1/2" NPT (Outer Diameter: 49 mm)
• Max. Working Pressure: ≤ 10 Bar
• Max. Rotation Speed: ≤ 2000 RPM
• Max. Medium Temperature: ≤ 100°C
• Compatible Medium: Compressed air (also suitable for clean water and light oil)
• Body Material: Full stainless steel construction
• Seal Structure: Precision balanced fully closed mechanical seal

Application Scenarios

• High-Pressure Car Washers & Jet Cleaners — Connects the fixed air/water supply to the rotating spray platform, preventing hose tangling during operation.
• Automatic Hose Reels & Winding Machines — Enables smooth paying-out and retracting of hoses without twist damage.
• Pneumatic Control Systems — Transfers compressed air from stationary lines to rotating actuators, cylinders, and tools.
• Industrial Automation — Ideal for rotary indexing tables, turntables, and robotic arms requiring continuous media supply.
• Light Fluid Transfer — Suitable for clean water or light oil transfer at low to medium pressure (≤ 10 Bar).

Key Selling Points (Buyer-Focused)

• Eliminates hose twisting & kinking by allowing 360° free rotation, extending hose life and preventing twist-related failures.
• Zero leakage and low maintenance due to balanced mechanical seal that maintains constant contact pressure on seal faces.
• Corrosion-proof full stainless steel construction for harsh/outdoor environments.
• Quiet, smooth, and efficient operation thanks to optimized internal flow channels and precision bearings.
• Standard 1/2" NPT compatibility for easy integration with common pneumatic systems.
• Space-saving design with compact 49mm outer diameter for tight equipment layouts.

Technical specifications

• Connection type: 1/2" NPT
• Outer diameter: 49 mm
• Maximum working pressure: ≤ 10 Bar
• Maximum rotational speed: ≤ 2000 RPM
• Maximum medium temperature: ≤ 100°C
• Compatible media: Compressed air, clean water, light oil
• Body material: Full stainless steel
• Seal: Precision balanced fully closed mechanical seal
• Intended applications: Hose reels, car washers, pneumatic control systems, rotary indexing tables, winding equipment