257-000-135917
- 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
1"-14 UNS RH
B
3/4"-14 NPT
C
2.875"
C
73.03 mm
D1
138.9 mm
D1
5.469"
D2
6.925"
D2
175.9 mm
E
1.327"
E
33.7 mm
F
17.4 mm
F
0.685"
G
0.689"
G
17.5 mm
H
1.26"
H
32 mm
J
93.3 mm
J
3.673"
K
1/2"-14 NPT
M
1"
M
25.4 mm
N
44.45 mm
N
1.75"
O
NPT 1/2"-14 RH
P
Non-Threaded
R
6.335"
R
160.9 mm
S
0.866"
S
22 mm
S2
11.27 mm
S2
0.444"
S3
Brazed
Operating Specifications
Media
Water, Steam, Hot Oil
Rotor Connection
1"-14 UNS RH
Housing Connection
3/4"-14 NPT
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
