Union, Duoflow, 3/4" NPT RH, 3/4" NPT
257-230-020043
- 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
3/4"-14 NPT RH3/4"-14 NPT RH
B
3/4"-14 NPT3/4"-14 NPT
C
73.03 mm2.875 "
D1
137.9 mm5.429 "
D2
150.7 mm5.933 "
E
36.5 mm1.437 "
F
22.2 mm0.874 "
G
17.5 mm0.689 "
H
32 mm1.26 "
J
103.3 mm4.067 "
K
1/2"-14 NPT1/2"-14 NPT
M
25.4 mm1 "
N
47.4 mm1.866 "
O
NPT 1/2"-14 RHNPT 1/2"-14 RH
P
Non-ThreadedNon-Threaded
R
137.9 mm5.429 "
S3
ThreadedThreaded
Operating Specifications
Media
WaterWater
Rotor Connection
3/4"-14 NPT RH 3/4"-14 NPT RH
Supply Connection
3/4"-14 NPT 3/4"-14 NPT
Water Max. Flow
52.8 l/min13.9 GPM
Water Max. Pressure
51.7 bar750 psi
Water Max. Temperature
121 °C250 °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