Union, 2" NPT RH, 2" NPT
657-278-116
- 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
2"-11.5 NPT RH2"-11.5 NPT RH
B
2"-11.5 NPT2"-11.5 NPT
C
117.4 mm4.622 "
D1
255.1 mm10.043 "
E
74.19 mm2.921 "
F
38.1 mm1.5 "
G
47.6 mm1.874 "
H
57.15 mm2.25 "
J
181.3 mm7.138 "
K
1-1/4"-11.5 NPT1-1/4"-11.5 NPT
P
Non-ThreadedNon-Threaded
Operating Specifications
Media
WaterWater
Rotor Connection
2"-11.5 NPT RH 2"-11.5 NPT RH
Supply Connection
2"-11.5 NPT 2"-11.5 NPT
Water Max. Flow
390.5 l/min103.2 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