HVH Series 8-Passage Rotary Unions & Joints
DSTI 8-passage, high-flow HVH Series rotary unions feature eight independent flow passages and are suitable for vacuum & bidirectional pressures up to 5000 PSI [345 BAR].
HVH 8-passage models consist of a heavy-duty alloy steel construction and protected ball bearings ideal for harsh, rugged outdoor applications such as heavy forestry and construction equipment.
Need to combine fluid with electrical power, signal and/or data transfer? No problem. The HVH Series rotary unions are designed to integrate directly with our standard electrical slip rings. See options.
|Part #||Connection||Passage Size||Diameter||Length||Through Bore||Min. Torque*||Part Downloads||Information|
|HVH-3581 [HVHM-3581]||#12 SAE [G3/4"-14 BSPP]||0.750" [19.05 mm]||8.938" [227.026 mm]||18.828" [478.232 mm]||1.000" [25.4 mm]||150 ft-lbs [203.37 Nm]||Get Quote|
|HVH-3681 [HVHM-3681]||#16 SAE [G1"-11 BSPP]||0.875" [22.225 mm]||8.938" [227.026 mm]||20.859" [529.82 mm]||1.000" [25.4 mm]||150 ft-lbs [203.37 Nm]||Get Quote|
|HVH-3781 [HVHM-3781]||#20 SAE [G1-1/4"-11 BSPP]||1.250" [31.75 mm]||12.375" [314.326 mm]||23.340" [592.837 mm]||1.000" [25.4 mm]||250 ft-lbs [338.95 Nm]||Get Quote|
|HVH-3881 [HVHM-3881]||#24 SAE [G1-1/2"-11 BSPP]||1.500" [38.1 mm]||12.375" [314.326 mm]||25.276" [642.012 mm]||1.000" [25.4 mm]||250 ft-lbs [338.95 Nm]||Get Quote|
*Minimum torque required to rotate based on zero pressure with oil/hydraulic media. Required torque to rotate may be greater when using other media types or dry running. For specific torque requirements, please contact DSTI to discuss your application.
*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. 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 HVH Series rotary unions.View Options