SUPERSEDED by 257-1009-020043
255-230-020043
- Monoflow and duoflow operation
- Self-supported rotating union
- Radial housing connection
- Balanced mechanical seals
- 3 vent holes
- Forged brass housing and stainless steel rotor
- Special options include threaded vent holes, low torque design
- Seal Combinations: Carbon Graphite/Bronze for water; Carbon Graphite/Ceramic for hot oil, hot water and saturated steam; Tungsten Carbide/Ceramic for severe conditions such as poor water quality
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
Interface Drawing
Interface Control drawing for 255-230-020043
Operating Manual
Operating Manual for 54, 55, and 57 series
Service Guide
Service Guide for unions beginning with 55 to 655