Water rotary union GPS 6

for airfor chemicalsfor gas

Overview
The 6-passage GPS Series rotary unions employ specialized sealing technology for vacuum and bidirectional pressures and provide six independent flow passages for simultaneous transfer of different media. Stainless steel housings are available for corrosive and water media; carbon steel variants exist for non-corrosive applications. GPS 6-passage models use NPT threaded connections and a shaft configuration that allows either threaded passage mounting or flush mounting with O-ring face seal glands. The series is designed for direct integration with electrical slip rings to combine fluid transfer with electrical power, signal or data transmission.

Key specification highlights
Max. Pressure: 7,500 PSI [515 BAR] • Max. Speed: 500 RPM • Connection Type: NPT • Max. Vacuum: 30 HG • Temperature Range: 0° F to 220° F [-18° C to 105° C]

Suitable Media

• Air / Gas
• Chemical
• Coolant
• DI / Tap Water
• Oil / Hydraulic
• Water / Glycol

Connection Types (examples available)

• NPT (standard for GPS 6-passage models)
• Other types in series variants: BSPP, BSPT, SAE-ORB, ASME-BPE, medium pressure and custom connections (series-dependent)

Configurations (selected model data)

Part # | Connection | Passage Size | Diameter | Length | Through Bore | Min. Torque*
GPS-161 | 1/8"-27 NPT | 0.156" [3.962 mm] | 3.187" [80.95 mm] | 6.483" [164.67 mm] | 0.500" [12.7 mm] | 6 ft-lbs [8.13 Nm]
GPS-261 | 1/4"-18 NPT | 0.250" [6.35 mm] | 4.000" [101.6 mm] | 8.175" [207.65 mm] | 0.750" [19.05 mm] | 9.8 ft-lbs [13.29 Nm]
GPS-361 | 3/8"-18 NPT | 0.375" [9.525 mm] | 4.250" [107.95 mm] | 8.963" [227.66 mm] | 0.750" [19.05 mm] | 13.1 ft-lbs [17.76 Nm]
GPS-460 | 1/2"-14 NPT | 0.500" [12.7 mm] | 4.937" [125.4 mm] | 10.000" [254.00 mm] | None | 22.3 ft-lbs [30.23 Nm]
GPS-561 | 3/4"-14 NPT | 0.750" [19.05 mm] | 6.437" [163.5 mm] | 13.230" [336.04 mm] | 1.000" [25.4 mm] | 43.3 ft-lbs [58.71 Nm]

Included media / accessory notes

• Pressure vs. Torque and Pressure vs. Speed charts available for GPS series performance.
• Options for electrical slip ring integration to combine fluid and electrical transfer.

Technical specifications

• Series / Model: GPS Series (6-Passage)
• Maximum Pressure: 7,500 PSI [515 BAR] (series capability)
• Maximum Speed: 500 RPM (series capability)
• Maximum Vacuum: 30 HG
• Temperature Range: 0° F to 220° F [-18° C to 105° C]
• Connection Type (GPS 6-passage): NPT (other connection options available in other series)
• Housing Material: Stainless Steel (carbon steel options available for non-corrosive applications)
• Shaft Material / Finish: Stainless Steel (TDC indicated)
• Suitable Media: Air/Gas, Chemical, Coolant, DI/Tap Water, Oil/Hydraulic, Water/Glycol
• Configurations: multiple part numbers (GPS-161, GPS-261, GPS-361, GPS-460, GPS-561) with varying passage sizes, diameters, through bores and minimum torque requirements
• Downloads available: series catalog and installation/mounting documentation (PDF)
• Notes: operational life and torque requirements depend on combination of media, pressure, speed and duty cycle; some media or high-temperature applications require alternative sealing materials.