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 Size	Serial Number	Steam A Hot oil B	Maximum Pressure (PSI)	Maximum Temperature (℉)	MAX.R.PIM NPT THREADS	MAX.R.P.M STRAIGHT THREADS
3/8"	N10 - 002	A	250	406	750	-
	N10 - 005	B	150	650	750	-
	N10 - 007	B	150	650	750	-
1/2"	N12 - 002	A	250	406	750	-
	N12 - 007	B	150	650	750	-
	N12 - 011	B	150	650	750	-
	9075 - 001	A	150	366	400	400
	9075 - 020	B	150	650	400	400
3/4"	H20	A	150	385	180	180
	H20	B	90	650	350	350
	9100 - 001	A	150	366	400	400
	9100 - 020	B	150	650	400	400
1"	H25	A	150	385	180	180
	H25	B	90	650	350	350
	9125 - 001	A	150	366	400	400
	9125 - 020	B	150	650	400	400
1 - 1/4"	H32	A	150	366	180	180
	H32	B	90	650	350	350
	9150 - 001	A	150	366	400	400
	9150 - 020	B	150	650	400	400
1 - 1/2"	H40	A	150	385	180	180
	H40	B	90	650	350	350
	9200 - 001	A	150	366	400	400
	9200 - 020	B	150	650	400	400
2"	H57	A	150	385	180	-
	H57	B	90	650	350	-
2 - 1/2"	H67	A	150	385	180	-
	H67	B	90	650	350	-
3"	H87	A	150	385	180	-
	H87	B	90	650	350	-
4"	H107	A	150	385	180	-
	H107	B	90	650	350	-
5"	H127	A	150	385	180	-
	H127	B	90	650	350	-

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

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Textile Industry

• Fabric drying rollers
• Heat-setting machines

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Steel & Metal Processing

• Heated rollers
• Annealing and processing lines

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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.