Water rotary union GP 2

for oilfor vacuumfor chemicals

Overview
The GP Series 2-passage rotary unions provide two independent flow passages for simultaneous transfer of different media. Specialized sealing technology supports vacuum and bidirectional pressures. Standard housings are carbon steel (black oxide) for air/gas, coolant and petroleum-based hydraulic fluids; stainless steel options are available for corrosive media and water service. GP 2-passage NPT models include a unique shaft configuration for installation via threaded passages or O-ring face seal glands; BSPP-threaded GP 2-passage models are not offered with O-ring face seal glands. GP Series rotary unions are designed for direct integration with standard electrical slip rings to enable combined fluid and electrical/signal/data transfer.

Pressure & Speed Options (summary)

• Max. Pressure — Series: 200 PSI [15 BAR] — SPS, LT, SE, GP, GPS, SCS, HVH, HPS
• Max. Pressure — Series: 600 PSI [40 BAR] — SPS, LT, SE, GP, GPS, HVH, HPS
• Max. Pressure — Series: 5,000 PSI [345 BAR] — SE, GP, GPS, HVH, HPS
• Max. Pressure — Series: 7,500 PSI [515 BAR] — SE, GP, GPS, HPS
• Max. Pressure — Series: 20,000 PSI [1,375 BAR] — HPS
• Max. Speed — Series: 20 RPM to 500 RPM depending on series (typical up to 500 RPM)
• Other options — Custom

Connection Types (summary)

• 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
• Coolant
• Oil / Hydraulic (petroleum-based)
• Water / Glycol
• Chemicals (use GPS, SCS, HPS as applicable)
• DI / Tap Water
• Food-grade fluids (SCS series)
• Steam — custom solutions

Notes
* Water/glycol or coolant media must contain rust inhibitors. Oil/hydraulic media must be petroleum-based. All values depend on operating parameters; service life is affected by rotational speed and duty cycle. Applications above 220°F (105°C) or using water above 212°F (100°C) require alternative seal materials. Custom configurations available on request.

Technical Specifications

• Maximum Pressure: 7,500 PSI [515 BAR]
• Maximum Speed: 500 RPM
• Maximum Vacuum: 30 HG
• Temperature Range: 0°F to 220°F [-18°C to 105°C]
• Housing Material: Carbon Steel (Black Oxide); stainless steel options available
• Shaft Material: Carbon Steel (Black Oxide)
• Connection Types: NPT, BSPP (and other series-configurable options)
• Key Features: Two independent flow passages; sealing for vacuum and bidirectional pressures; integration capability with electrical slip rings