Water rotary union GPS 3

for oilfor chemicalsfor gas

Overview
The GPS Series 3-passage rotary unions transfer three independent media streams through a single rotating interface. They use specialized sealing for vacuum and bidirectional pressures, and are supplied with NPT threaded connections and a shaft design that supports threaded passage mounting or O-ring face seal gland flush mounting. Stainless steel housings are standard for corrosive or water services; carbon steel options are available for non-corrosive applications. The GPS Series is designed for direct integration with compatible electrical slip rings to combine fluid transfer with electrical power, signal or data.

Key Features

• Three independent flow passages (3-passage design)
• Sealing suitable for vacuum and bidirectional pressures
• Standard stainless steel construction (carbon steel option)
• NPT threaded connections (other types available across series)
• Shaft configuration for threaded passage or O-ring face seal gland mounting
• Designed for direct integration with electrical slip rings

Available Pressure Ratings (examples)
200 PSI [15 BAR]; 600 PSI [40 BAR]; 5,000 PSI [345 BAR]; 7,500 PSI [515 BAR] (GPS on this page); 20,000 PSI [1,375 BAR]; custom options available

Available Maximum Speed Examples
20 RPM; 50 RPM; 75 RPM; 300 RPM; 500 RPM (GPS on this page); custom options available

Connection Types (examples)
ASME-BPE; BSPP; BSPT; NPT (GPS models on this page); SAE-ORB; medium-pressure and custom options available

Suitable Media (examples)

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

Notes
Certain chemical or water-based applications and elevated temperatures may require alternative seal materials or special seal selections. Performance values (pressure, speed, torque, operational life) depend on combined application parameters (media, temperature, rotational speed, duty cycle) and vary by configuration. Continuous operation near maximum rated speed or at elevated temperatures may require alternate materials or options.

Specifications

• Series name: GPS Series
• Design: 3 independent flow passages (3-passage rotary union)
• Maximum pressure (typical for GPS listed on this page): 7,500 PSI [515 BAR]
• Maximum speed (typical for GPS listed on this page): 500 RPM
• Maximum vacuum: 30 in HG
• Temperature range: 0° F to 220° F [-18° C to 105° C] (higher temps require alternative seals)
• Connection type (standard on GPS models): NPT threaded connections
• Housing material: Stainless Steel (carbon steel available for non-water/corrosive applications)
• Shaft material / finish: Stainless Steel (TDC finish)
• Mounting options: threaded passage mounting or O-ring face seal gland flush mounting
• Integration: designed for direct integration with electrical slip rings for combined fluid and electrical transfer
• Typical minimum torque to rotate (examples from product family): 1.5 ft-lbs [2.03 Nm] up to 24.7 ft-lbs [33.49 Nm] depending on model and bore
• Available part sizes / connections: GPS-130, GPS-131, GPS-230, GPS-231, GPS-330, GPS-331, GPS-430, GPS-431, GPS-530, GPS-630, etc.