257-050-021
- 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
Imperial
Metric
Dimensions
A
3/4"-14 NPT LH
B
3/4"-14 NPT
C
2.875"
C
73.03 mm
D1
141.2875 mm
D1
5.563"
E
36.5125 mm
E
1.438"
F
22.225 mm
F
0.875"
G
17.4625 mm
G
0.688"
H
31.75 mm
H
1.25"
J
4.063"
J
103.1875 mm
K
1/2"-14 NPT
P
Non-Threaded
Operating Specifications
Media
Water, Steam, Hot Oil, Water
Rotor Connection
3/4"-14 NPT LH
Housing Connection
3/4"-14 NPT
Water
Max. Flow
13.9 GPM
Water
Max. Flow
52.8 l/min
Water
Max. Pressure
10 bar
Water
Max. Pressure
150 psi
Water
Max. Temperature
93 °C
Water
Max. Temperature
195 °F
Hot Oil
Max. Flow
13.9 GPM
Hot Oil
Max. Flow
52.8 l/min
Hot Oil
Max. Pressure
100 psi
Hot Oil
Max. Pressure
6.9 bar
Hot Oil
Max. Temperature
250 °F
Hot Oil
Max. Temperature
121 °C
Steam
Max. Flow
58.1 GPM
Steam
Max. Flow
219.9 l/min
Steam
Max. Pressure
15 psi
Steam
Max. Pressure
1 bar
Steam
Max. Temperature
250 °F
Steam
Max. Temperature
121 °C
Water
Max. Flow
13.9 GPM
Water
Max. Flow
52.8 l/min
Water
Max. Pressure
750 psi
Water
Max. Pressure
51.7 bar
Water
Max. Temperature
250 °F
Water
Max. Temperature
121 °C
