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Union, Duoflow, 3/4" NPT LH, 3/4" NPT

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257-000-021043

  • 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
Features.ProductSeries.Imperial Features.ProductSeries.Metric
Features.ProductDetail.DimensionTitle
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A
3/4"-14 NPT LH
B
3/4"-14 NPT
C
3.058"
C
77.68 mm
D1
5.634"
D1
143.1 mm
D2
7.063"
D2
179.4 mm
E
1.535"
E
39 mm
F
0.965"
F
24.5 mm
G
19.5 mm
G
0.768"
H
30 mm
H
1.181"
J
3.807"
J
96.7 mm
K
1/2"-14 NPT
M
25 mm
M
0.984"
N
1.823"
N
46.3 mm
O
NPT 1/2"-14 RH
P
Non-Threaded
R
148 mm
R
5.827"
S3
Threaded
Features.ProductDetail.SpecificationTitle
Features.Products.Media
Water, Steam, Hot Oil
Features.ProductDetail.SpecificationRotorConnectionTitle
3/4"-14 NPT LH
Features.ProductDetail.SpecificationHousingConnectionTitle
3/4"-14 NPT
Hot Oil Features.ProductDetail.Flow
13.9 GPM
Hot Oil Features.ProductDetail.Flow
52.8 l/min
Hot Oil Features.ProductDetail.Pressure
100 psi
Hot Oil Features.ProductDetail.Pressure
6.9 bar
Hot Oil Features.ProductDetail.Temperature
250 °F
Hot Oil Features.ProductDetail.Temperature
121 °C
Steam Features.ProductDetail.Flow
58.1 GPM
Steam Features.ProductDetail.Flow
219.9 l/min
Steam Features.ProductDetail.Pressure
15 psi
Steam Features.ProductDetail.Pressure
1 bar
Steam Features.ProductDetail.Temperature
250 °F
Steam Features.ProductDetail.Temperature
121 °C
Water Features.ProductDetail.Flow
13.9 GPM
Water Features.ProductDetail.Flow
52.8 l/min
Water Features.ProductDetail.Pressure
750 psi
Water Features.ProductDetail.Pressure
51.7 bar
Water Features.ProductDetail.Temperature
250 °F
Water Features.ProductDetail.Temperature
121 °C
Features.Products.DocumentsAndResources
Service Guide for unions 57-series unions
Installation Guide for 54, 55, and 57 series
Operating Manual for 54, 55, and 57 series