Union, 7" flange, 4" pilot, 2" NPT
657-000-444
- 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
171.45 mm6.75 "
B
2"-11.5 NPT2"-11.5 NPT
C
117.475 mm4.625 "
D1
258.763 mm10.188 "
E
88.9 mm3.5 "
F
7.938 mm0.313 "
G
47.625 mm1.875 "
I
101.473 mm3.995 "
J
203.2 mm8 "
K
1-1/4"-11.5 NPT1-1/4"-11.5 NPT
P
Non-ThreadedNon-Threaded
X
7.938 mm0.313 "
Operating Specifications
Media
WaterWater
Rotor Connection
171.45 mm6.75 "
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