Union, Duoflow, 120 mm flange, 50 mm pilot, 3/4" NPT
557-134-495144
- 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
120 mm4.724 "
B
3/4"-14 NPT3/4"-14 NPT
C
108 mm4.252 "
D1
196.8 mm7.748 "
D2
247 mm9.724 "
E
49 mm1.929 "
F
8 mm0.315 "
G
38 mm1.496 "
I
49.7 mm1.957 "
J
145 mm5.709 "
K
1-1/4"-11.5 NPT1-1/4"-11.5 NPT
M
38.2 mm1.504 "
N
76 mm2.992 "
O
NPT 3/4"-14 RHNPT 3/4"-14 RH
P
Non-ThreadedNon-Threaded
R
221 mm8.701 "
S
38.1 mm1.5 "
S2
25.53 mm1.005 "
S3
RotatingRotating
X
8 mm0.315 "
Operating Specifications
Media
WaterWater
Rotor Connection
120 mm4.724 "
Supply Connection
3/4"-14 NPT 3/4"-14 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 557-134-495144
Operating Manual
Operating Manual for 54, 55, and 57 series
Service Guide
Service Guide for unions 57-series unions