SUPERSEDED by 257-000-021075
255-000-021075
- 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 LH3/4"-14 NPT LH
B
3/4"-14 NPT3/4"-14 NPT
C
73.03 mm2.875 "
D1
147.6 mm5.811 "
D2
174 mm6.85 "
E
36.5 mm1.437 "
F
22.23 mm0.875 "
G
17.45 mm0.687 "
H
31.75 mm1.25 "
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
147.6 mm5.811 "
S
19.2 mm0.756 "
S2
12.598 mm0.496 "
S3
BrazedBrazed
Operating Specifications
Media
Hot Oil, Steam, WaterHot Oil, Steam, Water
Rotor Connection
3/4"-14 NPT LH 3/4"-14 NPT 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 255-000-021075
Operating Manual
Operating Manual for 54, 55, and 57 series
Service Guide
Service Guide for unions beginning with 55 to 655