Union, Low-Speed Tandem, 1-1/2" NPT RH, 3/4" NPT
1890-520
- 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
1-1/2"-11.5 NPT RH1-1/2"-11.5 NPT RH
B
3/4"-14 NPT3/4"-14 NPT
C
88.4 mm3.48 "
D1
294 mm11.575 "
E
66 mm2.598 "
F
30 mm1.181 "
G
20.62 mm0.812 "
H
63.5 mm2.5 "
J
104 mm4.094 "
K
1/4"-18 NPT1/4"-18 NPT
P
Non-ThreadedNon-Threaded
R
190 mm7.48 "
S3
ThreadedThreaded
Operating Specifications
Media
Air, Hydraulic OilAir, Hydraulic Oil
Rotor Connection
1-1/2"-11.5 NPT RH 1-1/2"-11.5 NPT 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. Flow
204 l/min53.9 GPM
Hydraulic Oil Max. Pressure
207 bar3000 psi
Hydraulic Oil Max. Temperature
121 °C250 °F
Documents & Resources
Operating Manual
Operating Manual for Soft-Seal Air & Hydraulic unions
Service Guide
Service Guide for unions beginning with 1790 or 1890