Union, Duoflow, M50x1.5 LH, 1-1/2" PT
557-045-200144
- 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
M50x1.5 LHM50x1.5 LH
B
1-1/2"-11 PT1-1/2"-11 PT
C
111 mm4.37 "
D1
213.2 mm8.394 "
D2
263 mm10.354 "
E
65 mm2.559 "
F
22.6 mm0.89 "
G
38.1 mm1.5 "
H
55 mm2.165 "
J
148 mm5.827 "
K
1-1/4"-11.5 NPT1-1/4"-11.5 NPT
M
38 mm1.496 "
N
76 mm2.992 "
O
NPT 3/4"-14 RHNPT 3/4"-14 RH
P
Non-ThreadedNon-Threaded
R
238 mm9.37 "
S
38.1 mm1.5 "
S2
25.53 mm1.005 "
S3
RotatingRotating
Operating Specifications


Media
WaterWater
Rotor Connection
M50x1.5 LH M50x1.5 LH
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 557-045-200144
Operating Manual
Operating Manual for 54, 55, and 57 series
Service Guide
Service Guide for unions 57-series unions