Union, 1/2" NPT RH, 1/2" NPT
157-742-001
- 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
1/2"-14 NPT RH1/2"-14 NPT RH
B
1/2"-14 NPT1/2"-14 NPT
C
57.2 mm2.252 "
D1
122 mm4.803 "
E
37.6 mm1.48 "
F
22 mm0.866 "
G
12.7 mm0.5 "
H
30 mm1.181 "
J
89.5 mm3.524 "
K
3/8"-18 NPT3/8"-18 NPT
P
Non-ThreadedNon-Threaded
Operating Specifications
Media
WaterWater
Rotor Connection
1/2"-14 NPT RH 1/2"-14 NPT RH
Supply Connection
1/2"-14 NPT 1/2"-14 NPT
Water Max. Flow
26.9 l/min7.1 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 157-742-001
Operating Manual
Operating Manual for 54, 55, and 57 series
Service Guide
Service Guide for unions 57-series unions