SUPERSEDED by 157-050-151

155-208-252

  • 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

Selected dimensions for this product
A
G 1/2"-14 RH
B
1/2"-14 NPT
C
57.2 mm
D1
119.6 mm
E
34.4 mm
F
19 mm
G
12.7 mm
H
30 mm
J
79 mm
K
3/8"-18 NPT
P
Non-Threaded

Operating Specifications

Recommended operating limits for pressure and speed
Media
Water
Rotor Connection
G 1/2"-14 RH
Supply Connection
1/2"-14 NPT
Water Max. Flow
26.9 l/min
Water Max. Pressure
51.7 bar
Water Max. Temperature
93 °C

Documents & Resources

Installation Guide
Installation Guide for 54, 55, and 57 series
Interface Drawing
Interface Control drawing for 155-208-252
Operating Manual
Operating Manual for 54, 55, and 57 series
Service Guide
Service Guide for unions beginning with 55 to 655