Air rotary union

for waterfor compressed airfor steam

Short Description
DN40 high temperature resistant rotary joint
Model Type: Universal Rotary Union / Swivel Joint
Inner Diameter: 40mm (DN40 / 1.5 inch)
Performance: ≤10 RPM, ≤1.0 MPa, ≤200°C
Floating Angle: 20° (Self-aligning)
Applicable Media: Water, Air, Saturated Steam
Advantage: Low maintenance, Leak-proof, Cost-effective

Overview
The DN40 universal rotary union is a low speed single passage rotating joint designed for reliable fluid transfer between stationary supply lines and rotating equipment. With a 40mm inner diameter equivalent to 1.5 inch nominal bore, this rotary joint delivers high flow capacity while maintaining a compact footprint. The self aligning design with 20 degree floating angle automatically compensates for minor misalignment, reducing shaft stress and extending seal service life.

Key Specifications
Parameter | Specification
Model Type | Universal Rotary Union / Swivel Joint
Inner Diameter | 40mm (DN40 / 1.5 inch)
Max Speed | ≤10 RPM
Max Pressure | ≤1.0 MPa
Max Temperature | ≤200 C
Floating Angle | 20 deg (Self Aligning)
Applicable Media | Water, Air, Saturated Steam

Core Advantages

• Self Aligning 20 Degree Floating Design: The rotor freely adjusts within a 20 degree floating range during operation to compensate for installation misalignment, minimizing vibration and mechanical stress on bearings and seals.
• Stable Low Speed Performance: Engineered for applications up to 10 RPM, ensuring smooth, leak free operation in low speed rotating tables, rollers, turntables and indexing machinery.
• High Pressure and Temperature Capability: Rated for working pressures up to 1.0 MPa and temperatures up to 200 C; sealing system remains stable under continuous saturated steam service.
• Multi Media Compatibility: Single universal model handles water, compressed air and saturated steam, simplifying inventory and reducing procurement complexity.
• Low Maintenance and Leak Proof: Optimized seal structure provides long term leak free performance and reduced seal wear due to self aligning capability.
• Cost Effective Solution: Universal design reduces the need for multiple dedicated rotary joints, delivering cost savings for equipment manufacturers and end users.

Typical Applications

• Packaging machinery and filling lines
• Textile dyeing and finishing equipment
• Rubber and plastics processing machinery
• Steel metallurgy rotary kilns and dryers
• 3C electronics automation production lines
• Steam heated rotating drums and corrugators
• Pneumatic clutch and brake rotating interfaces

Caractéristiques / spécifications techniques

• Model Type: Universal Rotary Union / Swivel Joint
• Inner Diameter: 40mm (DN40 / 1.5 inch)
• Maximum Speed: ≤10 RPM
• Maximum Pressure: ≤1.0 MPa
• Maximum Temperature: ≤200°C
• Floating Angle: 20° (self-aligning)
• Applicable Media: Water, Air, Saturated Steam
• Advantages: Low maintenance, Leak-proof, Cost-effective