SUPERSEDED by 257-000-285
255-000-285
- 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
G 3/4"-14 LHG 3/4"-14 LH
B
3/4"-14 NPT3/4"-14 NPT
C
73.03 mm2.875 "
D1
141 mm5.551 "
E
34 mm1.339 "
F
19 mm0.748 "
G
17.5 mm0.689 "
H
36 mm1.417 "
J
94.5 mm3.72 "
K
1/2"-14 NPT1/2"-14 NPT
P
Non-ThreadedNon-Threaded
Operating Specifications
Media
Hot Oil, Steam, WaterHot Oil, Steam, Water
Rotor Connection
G 3/4"-14 LH G 3/4"-14 LH
Supply Connection
3/4"-14 NPT 3/4"-14 NPT
Hot Oil Max. Flow
52.8 l/min13.9 GPM
Hot Oil Max. Pressure
6.9 bar100 psi
Hot Oil Max. Temperature
121 °C250 °F
Steam Max. Flow
219.9 l/min58.1 GPM
Steam Max. Pressure
1 bar15 psi
Steam Max. Temperature
121 °C250 °F
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 255-000-285
Operating Manual
Operating Manual for 54, 55, and 57 series
Service Guide
Service Guide for unions beginning with 55 to 655