Union, Duoflow, 1/2" NPT RH, 1/2" NPT
157-000-151987
- 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
120.5 mm4.744 "
D2
144 mm5.669 "
E
34.4 mm1.354 "
F
19 mm0.748 "
G
12.7 mm0.5 "
H
28.5 mm1.122 "
J
78.8 mm3.102 "
K
3/8"-18 NPT3/8"-18 NPT
M
17.44 mm0.687 "
N
37.3 mm1.469 "
O
NPT 3/8"-18 RHNPT 3/8"-18 RH
P
Non-ThreadedNon-Threaded
R
152 mm5.984 "
S
11.3 mm0.445 "
S2
10 mm0.394 "
S3
FixedFixed
Operating Specifications
Media
Hot Oil, Steam, WaterHot Oil, Steam, Water
Rotor Connection
1/2"-14 NPT RH 1/2"-14 NPT RH
Supply Connection
1/2"-14 NPT 1/2"-14 NPT
Hot Oil Max. Flow
26.9 l/min7.1 GPM
Hot Oil Max. Pressure
6.9 bar100 psi
Hot Oil Max. Temperature
121 °C250 °F
Steam Max. Flow
112.2 l/min29.6 GPM
Steam Max. Pressure
1 bar15 psi
Steam Max. Temperature
121 °C250 °F
Water Max. Flow
26.9 l/min7.1 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
Interface Drawing
Interface Control drawing for 157-000-151987
Operating Manual
Operating Manual for 54, 55, and 57 series
Service Guide
Service Guide for unions 57-series unions