Deublin 157-000-151 Rotary Union Valve

Deublin 157-000-151 Rotary Union: General Purpose Fluid Transfer

The Deublin 157-000-151 Rotary Union is a robust, self-supported rotary joint from the 57 Series, engineered for the reliable transfer of various media—including Water, Steam, and Hot Oil—from a stationary source to a rotating machine part. Its combination of versatile design, rugged construction, and maintenance-friendly features makes it a popular choice for general industrial applications.

Key Features and Specifications

This specific model is recognized for its connection configuration and durability:

• Rotor Connection: G 1/2″-14 RH (Right Hand Thread).
• Housing Connection: 1/2″-14 NPT.
• Design Versatility: Features both Monoflow (single passage) and Duoflow (two passages) capability, offering flexibility for different circuit layouts (e.g., coolant-through-spindle or simple fluid supply).
• Self-Supported: The union is designed to be supported solely by its connection to the rotating shaft, simplifying installation by eliminating the need for external anti-rotation devices.
• Balanced Mechanical Seals: Utilizes precision-engineered balanced mechanical seals (typically Carbon Graphite/Silicon Carbide) to minimize friction, torque, and wear, regardless of media pressure. This extends the service life significantly.
• E.L.S. (Extended Life Service) Option: The standard seal combination provides resistance against contaminants, making it suitable for environments with poor water quality.
• Construction: Built with a durable Forged Brass Housing and a Stainless Steel Rotor for excellent corrosion resistance and longevity.
• Maintenance: Features a keyed rotor seal design that allows for quick and easy replacement of sealing components, minimizing downtime and repair costs.
• Bearings: Equipped with ball bearings lubricated for life for maintenance-free operation.

Operating Specifications (Reference)

The 157-000-151 unit is suitable for a range of media under specific pressure and temperature limits: