OVERVIEW

Official designation: Haag + Zeissler 9001 RL-MD (9001 Series, Single-Passage Rotary Joint)

Role/Application: Modular single-passage rotary union for universal use, transferring heat transfer oil, air, and vacuum with a maintenance-free solid grease ball bearing system.

KEY SPECS SUMMARY

Power: N/A

Interfaces / Ports: Single passage; nominal sizes DN 50 (2 inch) up to DN 100 (4 inch)

Indicators: N/A

Operating Temp: Maximum 300 degrees C for heat transfer oil, air, and vacuum

Platform / Compatibility: Modular design with bellows system cartridge and solid grease ballbearings

Limit: Maximum 6 bar pressure for heat transfer oil/air; 400 rpm speed for DN 50

Lifecycle: Refer to the latest manufacturer manual.

FREQUENTLY ASKED QUESTIONS

Technical Specifications:

Q: What is the maximum operating speed specified for the largest nominal size, DN 100 (4 inch)?

A: The maximum speed for the DN 100 (4 inch) size is 250 rpm.

Wiring & Installation:

Q: What are the main advantages of the RL-MD series modular design for installation and maintenance?

A: The modular design allows for customer-tailored configuration and fast, economic cartridge changes.

Troubleshooting & Compatibility:

Q: Does combining maximum operating pressure and speed require consultation with the manufacturer?

A: Yes, do not use the rotary joint at maximum operating data combinations without consulting Haag + Zeissler.

Replacement & Upgrades:

Q: Is there a high-temperature version available for heat transfer oil exceeding 230 degrees C?

A: Version HT is available for coking heat transfer oil, featuring a diamondhard sealface and high-temperature graphite seal ring.