Union, Low-Speed Tandem, G 1-1/2" RH, 3/4" NPT
1890-064
- Duoflow design for low-speed air and hydraulic applications
- Self-supported rotating union
- Composite bearing
- Vent holes between passages
- Special seals
- Hardened sealing surface
- Aluminum housing and steel rotor
- Triple-passage tandem model available
Dimensions
A
G 1-1/2"-11 RHG 1-1/2"-11 RH
B
3/4"-14 NPT3/4"-14 NPT
C
88.316 mm3.477 "
D1
281.71 mm11.091 "
E
67 mm2.638 "
F
28.57 mm1.125 "
G
20.6 mm0.811 "
H
63.5 mm2.5 "
J
3.495 mm0.138 "
K
1/4"-18 NPT1/4"-18 NPT
P
Non-ThreadedNon-Threaded
R
161.798 mm6.37 "
S3
ThreadedThreaded
Operating Specifications
Media
Air, Hydraulic Oil, VacuumAir, Hydraulic Oil, Vacuum
Rotor Connection
G 1-1/2"-11 RH G 1-1/2"-11 RH
Supply Connection
3/4"-14 NPT 3/4"-14 NPT
Air Max. Flow
8497 l/min300 CFM
Air Max. Pressure
10 bar150 psi
Air Max. Temperature
121 °C250 °F
Hydraulic Oil Max. Pressure
207 bar3000 psi
Hydraulic Oil Max. Temperature
121 °C250 °F
Vacuum Max. Pressure
-0.95 bar-13.75 psi
Vacuum Max. Temperature
121 °C250 °F
Documents & Resources
Interface Drawing
Interface Control drawing for 1890-064
Operating Manual
Operating Manual for Soft-Seal Air & Hydraulic unions
Service Guide
Service Guide for unions beginning with 1790 or 1890