Large Capacity Rotary Unions for Heavy-Duty Industrial Applications

Description

Our large capacity rotary unions are engineered to deliver superior rotational fluid transfer capabilities in demanding industrial environments. Designed to reliably channel liquids, gases, or steam between stationary pipes and rotating equipment, they enable continuous process flow without leakage or performance loss. We engineer them specifically to handle demanding industrial applications that require high flow rates, support multi-channel fluid transfer, and accommodate large bore diameters, ensuring optimal performance and durability in every operation. Built with durability and precision in mind, these rotary unions are ideal for steel mills, paper plants, heavy machinery, marine equipment, and other high-demand environments.

Need a rotary union that can handle extreme flow, pressure, or size? Whether for manufacturing, steel processing, paper production, or heavy machinery, these rotary unions boast industry-leading flow rates and pressure handling, ensuring optimized system efficiency and reduced downtime.

Key Features of Our Large Capacity Rotary Unions

High Flow Capability

Designed for transferring water, oil, steam, or hydraulic fluids at very high flow rates
Bore sizes available up to 150mm (6”) and beyond

Multi-Passage Configurations

Available in 2, 4, 6, or 8-channel designs for simultaneous transfer of multiple fluids or media
Perfect for systems requiring simultaneous supply and return lines

Rugged Construction

Built from stainless steel, ductile iron, or carbon steel
Surface treatments available: nickel-plating, hard anodizing, PTFE coating for chemical and wear resistance

Advanced Sealing Systems

Equipped with carbon-graphite, silicon carbide, or mechanical face seals
Options for balanced seals and non-contact labyrinth seals for a longer lifespan

Customizable to Fit Your Needs

Mounting styles: flange, threaded, through bore, or custom plate
Port threads available in NPT, BSP, SAE, DIN
Pressure rating: up to 400 bar / 6000 PSI (application-dependent)
Speed support: up to 1000 RPM (depending on size and media)

Customer Pain Point Solutions of Rotary Union for Hydraulics

1. Seal failure and leakage risk

Solution:

Regular Inspection: Regularly inspect the union for signs of wear or damage. Check all connections and seals for tightness and integrity.
Proper Installation: Follow the manufacturer’s guidelines to install the rotary union properly and avoid misalignment or excessive seal stress.
Seal Maintenance: Adopting multi-layer sealing technology, the material has high wear resistance. Make sure to store seals correctly and use them before they expire.

2. Grinding, whirring, or knocking Unusual Noises

Solution

Diagnostic Listening: Listen to identify the nature and timing of the noise to pinpoint the issue.
Inspection and Cleaning: Inspect for foreign objects and clean the union if necessary. Check bearings for wear and replace them if damaged.

3. Failure to Rotate

Solution:

Physical Inspection: Check for physical obstructions or damage. Verify that connected equipment is functioning correctly and not imposing an excessive load.
Alignment Adjustment: Adjust the alignment of the rotary union and connected machinery to ensure smooth operation.

4. Over-Pressurization

Solution

Pressure Management: Ensure that valves are not closed while the fluid is hot, preventing over-pressurization. Use pressure relief mechanisms if necessary.
Regular Maintenance: Perform regular checks to ensure that the rotary union is not subjected to excessive pressure.

5. Abrasive Particles in Fluid

Solution

Fluid Filtration: Ensure that the hydraulic fluid is filtered to remove abrasive particles (ideally to 40 microns).
Seal Material Selection: Choose seal materials that are resistant to wear from contaminants.

6. Excessive Wear

Solution

Proper Lubrication: Follow recommended lubrication schedules to prevent wear on moving parts.
Alignment Checks: Regularly check and adjust the alignment of the rotary union and connected machinery.

7. Radial and Axial Loads

Solution

Load Management: Ensure that the rotary union is not subjected to excessive loads. Consider alternative installation methods for heavy applications.
Mounting Optimization: Optimize the mounting of the rotary union to minimize loads on the joint.

Why Choose Our Large Capacity Rotary Unions?

Our rotary unions combine durable construction with reliable performance to guarantee continuous operation in harsh and demanding environments. With extensive R&D and stringent quality controls, our products meet international standards and provide a cost-effective alternative for critical industrial fluid transfer.

🏭 Direct from Manufacturer – Cost-effective without compromising quality
🧩 OEM Replacements or Custom Designs – We support CAD drawing review and redesign
📦 Bulk Orders & Fast Turnaround – Short lead times, even for large-diameter models
🌍 Worldwide Shipping – Trusted by industrial clients in over 30+ countries
🔧 Engineering Support – For custom flow channels, pressure balancing, or mounting needs

FAQ  

Q: What differentiates large capacity rotary unions from standard models?

A: Large capacity rotary unions support higher flow rates and pressure, with enhanced sealing and robust materials tailored for heavy-duty applications.

Q: Can these unions handle multiple fluids simultaneously?

A: Yes, multi-channel configurations allow simultaneous transfer of different media through a single rotary union.

Q: What maintenance is required?

A: Regular inspection of seals and bearings is recommended. Our unions are designed for easy disassembly and quick replacement of wear parts.

Q: Are custom sizes available?

A: Yes, we offer custom rotary unions tailored to your operational specifications and dimensions.