Union, 1-3/4" UN RH, 1-1/4" NPT
527-050-031
- Monoflow and duoflow design
- Self-supported rotating union
- Radial housing connection
- Balanced mechanical seals
- Keyed rotor seal
- Easy and quick replacement of sealing components
- Ball bearings lubricated for life
- E.L.S. (Extended Life Service) seal combination for poor water quality
- 3 vent holes
- Forged brass housing and stainless steel rotor
- Special options include threaded vent holes
Dimensions

A
1-3/4"-12 UN RH1-3/4"-12 UN RH
B
1-1/4"-11.5 NPT1-1/4"-11.5 NPT
C
91 mm3.583 "
D1
192 mm7.559 "
E
57 mm2.244 "
F
30 mm1.181 "
G
31.8 mm1.252 "
H
46 mm1.811 "
J
119 mm4.685 "
K
1"-11.5 NPT1"-11.5 NPT
P
Non-ThreadedNon-Threaded
Operating Specifications


Media
WaterWater
Rotor Connection
1-3/4"-12 UN RH 1-3/4"-12 UN RH
Supply Connection
1-1/4"-11.5 NPT 1-1/4"-11.5 NPT
Water Max. Flow
174.3 l/min46 GPM
Water Max. Pressure
10 bar150 psi
Water Max. Temperature
93 °C195 °F
Documents & Resources
Installation Guide
Installation Guide for 54, 55, and 57 series
Operating Manual
Operating Manual for 54, 55, and 57 series
Service Guide
Service Guide for unions 57-series unions