Union, Special, 1-1/4" UNF RH, 1" NPT
355-188
- 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
1-1/4"-12 UNF RH1-1/4"-12 UNF RH
B
1"-11.5 NPT1"-11.5 NPT
C
82.55 mm3.25 "
D1
223.2 mm8.787 "
E
45.9 mm1.807 "
F
25.4 mm1 "
G
25 mm0.984 "
H
36 mm1.417 "
J
107.8 mm4.244 "
K
1/2"-14 NPT1/2"-14 NPT
P
Non-ThreadedNon-Threaded
Operating Specifications


Media
darex(canSealant)darex(canSealant)
Rotor Connection
1-1/4"-12 UNF RH 1-1/4"-12 UNF RH
Supply Connection
1"-11.5 NPT 1"-11.5 NPT
Max. Pressure
10 bar150 psi
Max. Temperature
121 °C250 °F
Documents & Resources
Installation Guide
Installation Guide for 54, 55, and 57 series
Interface Drawing
Interface Control drawing for 355-188
Operating Manual
Operating Manual for 54, 55, and 57 series
Service Guide
Service Guide for unions beginning with 55 to 655