GP Series Rotary Unions & Joints
The GP Series rotary unions are available in 2, 3, 4, 6, 8, 10 and 12 passage models. These general-purpose, multiple-passage rotary unions feature specialized sealing technology suitable for vacuum and bidirectional pressures and independent flow passages capable of transferring different media types simultaneously.
The carbon steel (black oxide) construction is suitable for air/gas, coolant, and hydraulic service. Stainless steel models are available to prevent corrosion for use with applications requiring water or corrosive media transfer (see GPS Series).
GP models with 2, 3, 4, 6 or 8 flow passages come standard with NPT thread shaft connections and O-ring face seal glands for flush mounting the union to an interface. GP models with BSPP thread connections are not available with O-ring face seal glands.
GP models with 10 and 12 flow passages come standard with NPT or BSPP thread connections on the sides of the shaft and housing. Optional O-ring face seal glands are available for both NPT and BSPP thread connections on the 10 and 12 flow passage models (must be specified when ordering).
Need to combine fluid with electrical power, signal and/or data transfer? No problem. The GP Series rotary unions are designed to integrate directly with our standard electrical slip rings. See options.
*Suitable Water/Glycol or Coolant media must have rust inhibitors present. Oil/Hydraulic media must be petroleum-based. Please consult with DSTI for approval. All values listed under Technical Specifications are dependent on a combination of all application parameters. Please note operational life is dependent upon both rotational speed and duty cycle. Contact DSTI if your application requires operating close to the maximum rotational speed with a continuous duty cycle. Applications with temperatures above 220° F (105° C) require alternative seal materials. The use of Water media with temperatures above 212° F (100° C) require alternative seal materials. Please consult with DSTI regarding your specific application requirements.
Easier and less expensive than you may think. We can modify our standard products to fit your project requirements.Learn More
Electrical Slip Ring Integration
Get the complete package. We offer a wide range of electrical slip rings designed to directly integrate with our GP Series rotary unions.View Options