GP Series
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General Purpose Rotary Unions GP Series FLOW PASSAGE OPTIONS

About DSTI What is a Rotary Union? Dynamic Sealing Technologies, Inc. (DSTI) serves a wide range of global industries as a leader in engineered fluid sealing and transfer solutions for rotating applications. Specifications & Operating Information Performance Data 13 GP 2 Passage Dimensions 15 GP 3 Passage Dimensions 17 DSTI core business segments are fluid rotary unions, electrical slip rings, and value-added products and services―providing customers with a single-source solution from design and manufacturing through to testing and qualification―all under one roof. Located in North America and...

GP Series What is a Rotary Union? A rotary union (or swivel joint) is a mechanism used to transfer fluid (under pressure or vacuum) from a stationary inlet to a rotating outlet, preserving and isolating the fluid connection. Rotary unions are engineered to endure a wide range of temperatures and pressures for a variety of conditions and environments. In addition, rotary unions may integrate multiple passages and handle different types of fluid simultaneously. See examples at www.dsti.com/industries HOW DO I CHOOSE THE BEST ROTARY UNION FOR MY APPLICATION? Tell us about your requirements so we...

GP Series Overview General Purpose Design NPT / BSPP / O-Ring Connection Options Exclusive DynaSeal™ Seals Electrical Slip Ring Integration Reliable Usage With Dissimilar Medias Custom Modifications Available Available in Stainless Steel (GPS Series) The GP Series rotary unions are available in 2, 3, 4, 6, 8, 10 and 12 passage models. These general-purpose, multiple-passage rotary unions feature specialized sealing technology suitable for vacuum and bidirectional pressures and independent flow passages capable of transferring different media types simultaneously. The carbon steel (black...

GP Series How to Order: Create your Part Number GPM With Thru-bore OPTIONS See Next Page 1 NOTE Thru-bore standard on all 10 and 12 flow passage models GP 10-Passage with thru-bore, 3/8” BSPP Connections PART NUMBER EXAMPLES GP Series (NPT2 Connection) GPM (Metric) Series (BSPP3 Connection) This digit not used in naming convention of 10 or 12 flow passage models NPT with O-ring face seal gland connections O-ring face seal gland connections not available for metric (BSPP) unions with 2 - 8 flow passage models O-RING FACE SEAL GLAND CONNECTIONS Standard on all GP 2 - 8 (NPT) models. Not...

GP Series How to Order: Choose your Options 2 Add “OF” for Shaft O-ring Face Seal Option 1 Optional Cap For Capsule Slip Rings (ES, ESE and ESM) OPTIONAL ELECTRICAL SLIP RINGS2 PART NUMBER EXAMPLE GP 4-Passage model with thru-bore, 1/4” NPT connections and an EST6 electrical slip ring with required adapter. 8 - 51 Circuits 240 Volts Ethernet NOTE Only available for GP(M)-1x1 models with a thru-bore. GP-241 NOTE Not available for GP(M)-1x1 models PART NUMBER EXAMPLE GPM-201-10-OF-ESM36-C1 Omit “OF” for all GP models with NPT connections except for GP 10 & 12 passage. Not available on GPM 2 -...

GP Series Specifications & Operating Information Retaining Ring Bearing Housing Seals Bearing Shaft O-Ring Seals for Face/Flush Mounting (Not Available on GPM 2 - 8 [BSPP] Models) Flow Passage Options Media Types Passage Sizes Connection Type Max. Operating Pressure Max. Vacuum Operating Temperature Body Material Type Black Oxide Slip Ring Options Mounting Options Carbon Steel Tapped holes on housing end / Slotted flange or tapped holes at shaft end Suitable Water/Glycol or Coolant media must have rust inhibitors present. Oil/Hydraulic media must be petroleum-based. Please consult with DSTI...

GP Series Performance Data: Pressure vs. Speed (Continuous) 2 PASSAGES 600 550 500 * This data is to be used as a general guideline. Data based on using hydraulic fluid with the product rotating continuously. Please consult DSTI about your specific application. * This data is to be used as a general guideline. Data based on using hydraulic fluid with the product rotating continuously. Please consult DSTI about your specific application. store store.dsti.com | web www.dsti.com | phone 866.700.3784 | Dynamic Sealing Technologies

GP Series Performance Data: Pressure vs. Speed (Continuous) 4 PASSAGES 400 GP-140 * This data is to be used as a general guideline. Data based on using hydraulic fluid with the product rotating continuously. Please consult DSTI about your specific application. * This data is to be used as a general guideline. Data based on using hydraulic fluid with the product rotating continuously. Please consult DSTI about your specific application. Dynamic Sealing Technologies, Inc | phone 866.700.3784 | web www.dsti.com | store store.dsti.com

GP Series Performance Data: Pressure vs. Speed (Continuous) 8 PASSAGES 300 * This data is to be used as a general guideline. Data based on using hydraulic fluid with the product rotating continuously. Please consult DSTI about your specific application. * This data is to be used as a general guideline. Data based on using hydraulic fluid with the product rotating continuously. Please consult DSTI about your specific application. store store.dsti.com | web www.dsti.com | phone 866.700.3784 | Dynamic Sealing Technologies

GP Series Performance Data: Pressure vs. Torque PRESSURE PSI (BAR) 1000 (69 BAR) PRESSURIZED TORQUE ( POUND FOOT [NEWTON METER] ) * This data is to be used as a general guideline. Torque data represents the minimum torque required to rotate based on all passages (ports) pressurized 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. Dynamic Sealing Technologies, Inc | phone 866.700.3784 | web www.dsti.com | store store.dsti.com

GP Series Performance Data: Pressure vs. Torque PRESSURE PSI (BAR) 0 PRESSURIZED TORQUE ( POUND FOOT [NEWTON METER] ) * This data is to be used as a general guideline. Torque data represents the minimum torque required to rotate based on all passages (ports) pressurized 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. store store.dsti.com | web www.dsti.com | phone 866.700.3784 | Dynamic Sealing Technologies, Inc