Union, Quick Connect, 4.43" pilot, 2-1/2" NPT
6400-031-423
- Monoflow and duoflow design
- Self-supported rotating union
- Radial housing connection
- Balanced mechanical seals
- Steel-banded floating seal
- Easy and quick replacement of sealing components
- Full-media flow
- Vent slots
- Cast iron housing
- Steel rotor flanged/threaded
- Seal Combinations: Carbon Graphite/Tungsten Carbide standard, Silicon Carbide/Tungsten Carbide for severe conditions such as poor water quality
Dimensions

A
Quick ConnectQuick Connect
B
2-1/2"-8 NPT2-1/2"-8 NPT
C
279 mm10.984 "
D1
504 mm19.843 "
D2
603 mm23.74 "
E
139 mm5.472 "
F
30.28 mm1.192 "
G
95.3 mm3.752 "
I
112.395 mm4.425 "
J
381 mm15 "
K
4"-8 NPT4"-8 NPT
M
88.9 mm3.5 "
N
144 mm5.669 "
O
NPT 2-1/2"-8 RHNPT 2-1/2"-8 RH
P
Non-ThreadedNon-Threaded
R
504 mm19.843 "
S
26.2 mm1.031 "
S2
70.155 mm2.762 "
S3
RotatingRotating
X
30.28 mm1.192 "
Operating Specifications


Media
WaterWater
Rotor Connection
Quick Connect Quick Connect
Supply Connection
2-1/2"-8 NPT 2-1/2"-8 NPT
Water Max. Flow
1135 l/min299.8 GPM
Water Max. Pressure
10 bar150 psi
Water Max. Temperature
121 °C250 °F
Documents & Resources
Installation Guide
Installation Guide for 6000 and 6005 series
Interface Drawing
Interface Control drawing for 6400-031-423
Operating Manual
Operating Manual for 6000-series unions
Service Guide
Service Guide for unions beginning with 620X to 640X