Union, 100 mm flange, 65 mm pilot, 1-1/2" NPT
557-000-179
- 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
100 mm3.937 "
B
1-1/2"-11.5 NPT1-1/2"-11.5 NPT
C
108 mm4.252 "
D1
226.5 mm8.917 "
E
66 mm2.598 "
F
20 mm0.787 "
G
39.025 mm1.536 "
I
64.97 mm2.558 "
J
150 mm5.906 "
K
1-1/4"-11.5 NPT1-1/4"-11.5 NPT
P
Non-ThreadedNon-Threaded
X
20 mm0.787 "
Operating Specifications


Media
WaterWater
Rotor Connection
100 mm3.937 "
Supply Connection
1-1/2"-11.5 NPT 1-1/2"-11.5 NPT
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 557-000-179
Operating Manual
Operating Manual for 54, 55, and 57 series
Service Guide
Service Guide for unions 57-series unions