Rotary Union for Steam

In steam-driven industrial systems, maintaining efficient heat transfer and safe condensate management is essential. Our Rotary Union for Steam is engineered to deliver stable, leak-free steam flow between stationary pipelines and rotating equipment, even under high-temperature and high-pressure conditions.

This category page aggregates a comprehensive range of steam rotary unions, optimized for applications including drying cylinders, heated rollers, and process equipment across multiple industries.

What is a Steam Rotary Union?

A steam rotary union, also known as a rotary joint, is a mechanical device that allows for the transfer of steam from a stationary source to a rotating component. It features seals and bearings that enable smooth rotation while preventing leaks, making it essential in various industrial applications such as power generation and manufacturing.

Fitting SizeSerial NumberSteam A
Hot oil B
Maximum Pressure (PSI)Maximum Temperature (℉)MAX.R.PIM NPT THREADSMAX.R.P.M STRAIGHT THREADS
3/8"N10 - 002A250406750-
N10 - 005B150650750-
N10 - 007B150650750-
1/2"N12 - 002A250406750-
N12 - 007B150650750-
N12 - 011B150650750-
9075 - 001A150366400400
9075 - 020B150650400400
3/4"H20A150385180180
H20B90650350350
9100 - 001A150366400400
9100 - 020B150650400400
1"H25A150385180180
H25B90650350350
9125 - 001A150366400400
9125 - 020B150650400400
1 - 1/4"H32A150366180180
H32B90650350350
9150 - 001A150366400400
9150 - 020B150650400400
1 - 1/2"H40A150385180180
H40B90650350350
9200 - 001A150366400400
9200 - 020B150650400400
2"H57A150385180-
H57B90650350-
2 - 1/2"H67A150385180-
H67B90650350-
3"H87A150385180-
H87B90650350-
4"H107A150385180-
H107B90650350-
5"H127A150385180-
H127B90650350-

Applications of Steam Rotary Unions

Our rotary unions for steam are widely used in industries requiring continuous heat transfer under rotation:

Paper Industry

  • Drying cylinders
  • Paper machine steam systems

Textile Industry

  • Fabric drying rollers
  • Heat-setting machines

Steel & Metal Processing

  • Heated rollers
  • Annealing and processing lines

Food & Chemical Processing

  • Rotary dryers
  • Mixing and heating equipment

Product Types in This Category

This category includes:

  • Single passage steam rotary unions
  • Dual passage steam rotary joints (steam + condensate)
  • Siphon-type rotary unions for condensate removal
  • High-speed steam rotary joints
  • Custom-engineered steam solutions

Each product meets specific temperature, pressure, and condensate handling requirements.

Conclusion

Our Rotary Union for Steam solutions are designed to deliver efficient heat transfer, reliable sealing, and long service life in high-temperature industrial environments. With advanced engineering, durable materials, and OEM compatibility, we provide a cost-effective and high-performance solution for global customers.