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"1900 Series" Rotary Union High Pressure Swivel

Model:  1900 Series / SRUH-4132

Part N° Description Maximum Pressure (PSI) Shaft Thread (A) Overall Length (F) Overall Diameter (I) Guide Price Quantity
4132-T21999
750798C
R1813SRDENPT 10,150 1/4 3-5/8 1-15/16 Quote Required
4132-T22000
750799C
R1817SRDENPT 10,150 3/8 4 2-1/8 Quote Required
4132-T22001
750800C
R1821SRDENPT 8,700 1/2 4-1/8 2-1/8 Quote Required
4132-T22002
750801C
R1827SRDENPT 7,250 3/4 4-3/4 2-1/2 Quote Required
4132-T22003
750802C
R1834SRDENPT 7,250 1 5-1/4 3-5/16 Quote Required
4132-T22004
750803C
R1842SRDENPT 7,250 1-1/4 5-1/2 3-1/2 Quote Required
4132-T22005
750804C
R1849SRDENPT 5,800 1-1/2 6 4-1/16 Quote Required
4132-T22006
750805C
R1860SRDENPT 5,800 2 6-1/16 4-1/2 Quote Required
4132-T22007
750806C
R1876SRDENPT 5,800 2-1/2 7-1/2 6 Quote Required
4132-T22008
750807C
R1890SRDENPT 5,800 3 8-1/4 6-13/16 Quote Required
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High pressure rotary union designed for use in very high pressure applications, stainless steel construction optional.

1900 Series

1900 Series Rotary Union High Pressure Swivel

Features and Benefits

  • Hydraulic Applications - High Pressure swivel for use in hydraulic and pneumatic applications.
  • High Pressure - Designed for use in very high pressure application up to 10,150 PSI.
  • Corrosion Resistant - Standard model feature nickel plated carbon steel construction.
  • Also available in all stainless steel.

1900 Series High Pressure Swivel Rotary Union Diagram

1900 Series High Pressure Swivel Rotary Union Diagram

Shaft Thread (A) B C DN Overall Length (F) G Flats (H) Overall Diameter (I) K L
1/4 3/8 7/16 1/4 3-5/8 2-15/16 13/16 1-15/16 5/8 15/16
3/8 7/16 9/16 3/8 4 3-1/8 1-1/4 2-1/8 1/2 1-7/16
1/2 9/16 5/8 1/2 4-1/8 3-1/8 1-1/4 2-1/8 5/8 1-3/8
3/4 5/8 9/16 3/4 4-3/4 3-1/2 1-5/16 2-1/2 3/4 1-1/2
1 3/4 3/4 13/16 5-1/4 4 2 3-5/16 3/4 2-1/8
1-1/4 13/16 13/16 1-1/8 5-1/2 4-1/8 2-1/8 3-1/2 3/4 2-3/8
1-1/2 13/16 13/16 1-7/16 6 4-5/8 2-3/8 4-1/16 1 2-5/8
2 1 1 1-5/8 6-1/16 4-7/8 2-5/8 4-1/2 1 2-15/16
2-1/2 1-1/16 1-1/8 2 7-1/2 5-3/4 4 6 1-1/8 4-1/4
3 1-1/8 1-1/4 2-1/2 8-1/4 6-7/16 4-3/4 6-13/16 1-1/8 5-1/8

1900 Series Rotary Union High Pressure Swivel Specifications

Shaft Thread (A) Part Number Description Maximum Pressure (PSI)
1/4 750798C R1813SRDENPT 10,150
3/8 750799C R1817SRDENPT 10,150
1/2 750800C R1821SRDENPT 8,700
3/4 750801C R1827SRDENPT 7,250
1 750802C R1834SRDENPT 7,250
1-1/4 750803C R1842SRDENPT 7,250
1-1/2 750804C R1849SRDENPT 5,800
2 750805C R1860SRDENPT 5,800
2-1/2 750806C R1876SRDENPT 5,800
3 750807C R1890SRDENPT 5,800

1900 Series High Pressure Swivel Rotary Union Performance Charts

1900 Series High Pressure Swivel Rotary Union Performance Charts
Rotary Union Design

Rotary Union Design

While rotating joints come in many shapes, sizes, and configurations, they always have the same four basic components: housing, a shaft, a bearing (or bearings) and a seal.

Mechanical Seal

The heart of the Rotary Union or rotary joint is the seal.

The seal prevents the medium (water, oil, air, etc) from leaking outside the Rotary Union while the Rotary Union is in operation.

Duff-Norton uses four basic types of mechanical seals in its Rotary Unions: 1) pusher-type end face mechanical seal, 2) non-pusher type end face mechanical seal, 3) lip seals and 4) o-ring seal. Rotary Unions may have more than one seal.

Bearing

The second most important part of the Rotary Union is the bearing. A Rotary Union may have only one bearing or multiple bearings.

Roller bearings, such as ball bearings and tapered roller bearings, or non-roller bearings, like graphite bearings and bronze bushings, may be used in the Rotary Union.

The bearings are always used to allow a part of the joint, either the shaft or the housing, to rotate.

Shaft

The shaft is the component that carries the medium through the Rotary Union into the drum or roll. In many cases, the shaft will turn with the drum or roll. In some cases, like in larger flanged rotary Unions, the shaft may be stationary while the housing rotates. The bearings and seal are typically assembled around the shaft.

Housing

The housing is the component that holds all of the other elements of the Rotary Union together. The housing has an inlet port, which is a threaded port to which the hose supplying the medium will be attached .

The Rotary Union may also have an outlet port, if the same joint is being used both to supply fluid to a roll and to remove fluid from the roll. In smaller Rotary Unions, the housing is stationary. In larger Rotary Unions, the housing maybe bolted to the drum or roll using a flange. In these cases, the housing rotates at the same speed as the drum.


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