Union, 1-1/2" PT RH, 1-1/2" PT
557-045-499
- 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
1-1/2"-11 PT RH1-1/2"-11 PT RH
B
1-1/2"-11 PT1-1/2"-11 PT
C
108 mm4.252 "
D1
216 mm8.504 "
E
62.1 mm2.445 "
F
30.1 mm1.185 "
G
38 mm1.496 "
H
54 mm2.126 "
J
151.9 mm5.98 "
K
1-1/4"-11.5 NPT1-1/4"-11.5 NPT
P
Non-ThreadedNon-Threaded
Operating Specifications


Media
WaterWater
Rotor Connection
1-1/2"-11 PT RH 1-1/2"-11 PT RH
Supply Connection
1-1/2"-11 PT 1-1/2"-11 PT
Water Max. Flow
252.8 l/min66.8 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
Interface Drawing
Interface Control drawing for 557-045-499
Operating Manual
Operating Manual for 54, 55, and 57 series
Service Guide
Service Guide for unions 57-series unions