Union, G 3/4" RH, 3/4" NPT

257-031-064

  • 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

Selected dimensions for this product
A
G 3/4"-14 RH
B
3/4"-14 NPT
C
73.03 mm
D1
138 mm
E
34.5 mm
F
17 mm
G
17.5 mm
H
36 mm
J
94.3 mm
K
1/2"-14 NPT
P
M10x1

Operating Specifications

Recommended operating limits for pressure and speed
Media
Hot Oil, Steam, Water
Rotor Connection
G 3/4"-14 RH
Supply Connection
3/4"-14 NPT
Hot Oil Max. Flow
52.8 l/min
Hot Oil Max. Pressure
6.9 bar
Hot Oil Max. Temperature
121 °C
Steam Max. Flow
219.9 l/min
Steam Max. Pressure
1 bar
Steam Max. Temperature
121 °C
Water Max. Flow
52.8 l/min
Water Max. Pressure
51.7 bar
Water Max. Temperature
121 °C

Documents & Resources

Installation Guide
Installation Guide for 54, 55, and 57 series
Operating Manual
Operating Manual for 54, 55, and 57 series
Service Guide
Service Guide for unions 57-series unions