Vacuum rotary union GPS 12

for oilfor gasfor water

Product Overview
The GPS Series 12-passage rotary unions route twelve independent flow paths to enable simultaneous transfer of multiple media. Designed for high-pressure industrial applications, units are available in stainless steel for corrosive or water-based media and carbon steel for non-corrosive fluids. Standard shaft and housing threaded connections are NPT; optional axial O-ring face seal glands can be supplied if specified at order.

Key Features

• Twelve independent passages for multi-media transfer
• Advanced sealing design supporting vacuum and bidirectional pressure
• Stainless steel housings and shafts standard; carbon steel variants available
• Standard NPT threaded connections on shaft and housing sides; axial O-ring face seal glands optional
• Compatible with electrical slip ring integration for combined fluid and electrical/data transfer

Introductory Specification Tables (summary)
Max. Pressure — Series
200 PSI [15 BAR] — SPS, LT, SE, GP, GPS, SCS, HVH, HPS
600 PSI [40 BAR] — SPS, LT, SE, GP, GPS, HVH, HPS
5,000 PSI [345 BAR] — SE, GP, GPS, HVH, HPS
7,500 PSI [515 BAR] — SE, GP, GPS, HPS
20,000 PSI [1,375 BAR] — HPS
Other — Custom

Max. Speed — Series
20 RPM — SPS, LT, SE, GP, GPS, SCS, HVH, HPS
50 RPM — SPS, LT, SE, GP, GPS, SCS, HPS
75 RPM — SPS, LT, SE, GP, GPS, SCS
300 RPM — SPS, LT, SE, GP, GPS, SCS
500 RPM — SPS, LT, GP, GPS, SCS
Other — Custom

Connection Type — Series
ASME-BPE — SCS
BSPP — SE, GP
BSPT — LT
NPT — SPS, LT, GP, GPS
SAE-ORB — SE, HVH
Medium Pressure — HPS
Other — Custom

Suitable Media (summary)
Air/Gas, Chemical, Coolant, DI/Tap Water, Oil/Hydraulic, Water/Glycol (food-grade and steam applications available via specific series or custom solutions; some media/temperature combinations require alternative seal materials)

Product Description
The GPS Series 12-passage units employ advanced sealing technologies to support vacuum and bidirectional pressures while routing up to twelve separate fluid paths. Stainless steel versions accommodate hydraulic, pneumatic, coolant, water and corrosive media; carbon steel variants are intended for non-corrosive fluid transfer. Units can be combined with electrical slip rings to provide integrated fluid and electrical/data transfer in a single assembly.

Configurations / Representative Part Numbers
Common configured models (examples):

• GPS-201-12 (GPSM-201-12): Connection 1/4"-18 NPT; Passage size 0.250" [6.35 mm]; Diameter 4.437" [112.7 mm]; Length 13.380" [339.85 mm]; Through bore 0.750" [19.05 mm]; Min. torque (zero pressure, Oil/Hydraulic): 19.2 ft-lbs [26.03 Nm]
• GPS-301-12 (GPSM-301-12): Connection 3/8"-18 NPT; Passage size 0.375" [9.525 mm]; Diameter 4.937" [125.4 mm]; Length 15.370" [390.40 mm]; Through bore 0.750" [19.05 mm]; Min. torque (zero pressure, Oil/Hydraulic): 26.2 ft-lbs [35.52 Nm]

Mounting & Shaft Connection Options

• Standard: Radial NPT connections on shaft (plugged if axial connection ordered)
• Optional: Axial O-ring face seal connections (must be specified at order)
• Threaded interface mounting holes available on some configurations

Available Options & Integration

• Axial O-ring face seal glands — optional, specify at order
• Electrical slip ring integration for combined fluid and electrical/data transfer
• Custom modifications to meet application-specific requirements

Performance Data & Charts
Manufacturer provides Pressure vs. Torque and Pressure vs. Speed charts for the GPS Series to define operational limits and support selection and sizing.

Notes
Chemical or water-based media at elevated temperatures may require alternate seal materials; temperature limits and seal selection influence performance and service life. Operational life depends on rotational speed and duty cycle. Certain media/temperature combinations require alternate seals or custom solutions.

Technical Specifications

• Series: GPS Series (12-passage)
• Maximum Pressure: 7,500 PSI [515 BAR] (series capability; other pressure options exist per series)
• Maximum Speed: 500 RPM (series capability; other speed options exist per series)
• Maximum Vacuum: 30 HG
• Temperature Range: 0° F to 220° F [-18° C to 105° C] (higher temperatures require alternate seals)
• Housing Material: Stainless Steel (carbon steel variants available)
• Shaft Material: Stainless Steel (TDC finish on shaft noted)
• Connection Type (standard): NPT (axial O-ring face seal optional)
• Passage Count: 12 independent passages
• Typical Suitable Media: Air/Gas, Chemical, Coolant, DI/Tap Water, Oil/Hydraulic, Water/Glycol
• Representative Part Numbers / Example Dimensions: GPS-201-12, GPS-301-12 (see configurations block for key dimensions and minimum torque values)
• Mounting: Radial and axial connections supported; threaded interface mounting holes provided on some configurations