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"5000 Series" Rotary Union

Model:  5000 Series / SRU-4088

Model
Part N° Description Repair Cartridge Nominal Pipe Size Shaft Thread (A) Guide Price Quantity
4088-T22411
750625C
R5000P 451671C 1/4 1/4 NPT Quote Required
4088-T22412
750110C
R5100P 451251C 3/8 3/8 NPT Quote Required
4088-T22413
750142C
R5124P 451253C 3/8 5/8-18 UNF Quote Required
4088-T22414
750112C
R5200P 451258C 1/2 1/2 NPT Quote Required
4088-T22415
750147C
R5224P 451260C 1/2 3/4-16 UNF Quote Required
4088-T22416
750150C
Q5200P 451263C 1/2 Quick Release Quote Required
4088-T22417
750089C
R5300P 451265C 3/4 3/4 NPT Quote Required
4088-T22418
750152C
R5324P 451267C 3/4 1-14 UNS Quote Required
4088-T22419
750155C
Q5300P 451270C 3/4 Quick Release Quote Required
4088-T22420
750114C
R5400P 451272C 1 1 NPT Quote Required
4088-T22421
750157C
R5424P 451274C 1 1-1/2-12 UNF Quote Required
4088-T22422
750160C
Q5400P 451277C 1 Quick Release Quote Required
4088-T22423
750116C
R5500P 451279C 1-1/4 1-1/4 NPT Quote Required
4088-T22424
750162C
R5524P 451281C 1-1/4 1-3/4-12 UN Quote Required
4088-T22425
750165C
Q5500P 451284C 1-1/4 Quick Release Quote Required
4088-T22426
750118C
R5600P 451286C 1-1/2 1-1/2 NPT Quote Required
4088-T22427
750167C
R5624P 451288C 1-1/2 2-12 UN Quote Required
4088-T22428
750170C
Q5600P 451291C 1-1/2 Quick Release Quote Required
4088-T22429
750120C
R5700P 451293C 2 2 NPT Quote Required
4088-T22430
750172C
R5724P 451295C 2 2-1/2-12 UN Quote Required
4088-T22431
750175C
Q5700P 451298C 2 Quick Release Quote Required
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Corrosion resistant rotary union made from 300 grade stainless steel.

5000 Series Rotary Union

5000 Series Rotary Union

Features and Benefits

  • Corrosion resistant - 300 grade stainless steel construction.
  • Long service life - Two precision bearings keep the 5000 series faces perfectly aligned to extend the life.
  • Balanced mechanical seal design - allows for optimal operation with a wide variety of media.
  • Replacement cartridge - Integrated cartridge design makes repairs fast and easy reducing maintenance cost.

Options

  • Dual flow optional with the addition of an elbow.
  • 5000 series seal design (standard) - carbon graphite against a ceramic coated steel seal design offers a long life.
  • 5000 T series seal design - Carbon graphite seal ring aginst a tungsten carbide face ring design will offer longer wear life where dirty media is used.
  • 5000 ASM series - Tungsten carbide face ring against a siliconized graphite seal ring design is used for abrasive applications.

5000 Series Mono Flow Dimensional Diagram

5000 Series Mono Flow Diagram

Nominal Pipe Size Shaft Thread A (right or left) B (NPT) C C1 D E F H J (NPT) L V W (flats) X Z (NPT)
1/4 1/4 NPT 3/8 4 5-1/4 1-9/16 1-1/4 2-9/32 1-3/8 3/8 9/16 1/4 5/8 1-1/16 3/8
3/8 3/8 NPT 3/8 4 5-1/4 1-9/16 1-1/4 2-9/32 1-3/8 3/8 5/8 3/8 5/8 1-1/16 3/8
5/1-18 UNF
1/2 1/2 NPT 1/2 4-3/4 5-15/16 2-1/16 1-9/32 2-23/32 1-7/16 3/8 3/4 1/2 7/8 1-1/16 3/8
3/4-16 UNF
Quick Release
3/4 3/4 NPT 3/4 5-1/4 6-1/2 2-5/16 1-13/32 3 1-9/16 1/2 3/4 11/16 1-1/4 1-1/16 1/2
1-14 UNS
Quick Release
1 1 NPT 1 6-3/16 7-1/2 3-1/8 1-5/8 3-7/16 1-13/16 1/2 15/16 1 1-3/8 1-15/32 3/4
1-1/2-12 UNF
Quick Release
1-1/4 1-1/4 NPT 1-1/4 7-1/2 9-1/16 3-1/2 2-9/64 4-1/32 2-5/32 3/4 1-1/16 1-1/4 1-5/8 1-1/32 1
1-3/4-12 UN MT
Quick Release
1-1/2 1-1/2 NPT 1-1/2 8-3/8 9-15/16 4 2-13/32 4-17/32 2-1/4 3/4 1-1/16 1-1/2 1-15/16 1-5/32 1-1/4
2-12 UN
Quick Release
2 2 NPT 2 9-1/2 11 4-3/8 2-21/32 5-1/16 2-1/2 3/4 1-1/8 1-7/8 2-1/2 1-5/32 1-1/4
2-1/2-12 UN
Quick Release

5000 Series Dual Flow Dimensional Diagram

5000 Series Dual Flow Diagram
Nominal Pipe Size Shaft Thread A (right or left) B (NPT) C C1 D E F H J (NPT) L V W (flats) X Z (NPT)
1/4 1/4 NPT 3/8 4 5-1/4 1-9/16 1-1/4 2-9/32 1-3/8 3/8 9/16 1/4 5/8 1-1/16 3/8
3/8 3/8 NPT 3/8 4 5-1/4 1-9/16 1-1/4 2-9/32 1-3/8 3/8 5/8 3/8 5/8 1-1/16 3/8
5/8-18 UNF
1/2 1/2 NPT 1/2 4-3/4 5-15/16 2-1/16 1-9/32 2-23/32 1-7/16 3/8 3/4 1/2 7/8 1-1/16 3/8
3/4-16 UNF
Quick Release
3/4 3/4 NPT 3/4 5-1/4 6-1/2 2-5/16 1-13/32 3 1-9/16 1/2 3/4 11/16 1-1/4 1-1/16 1/2
1-14 UNS
Quick Release
1 1 NPT 1 6-3/16 7-1/2 3-1/8 1-5/8 3-7/16 1-13/16 1/2 15/16 1 1-3/8 1-15/32 3/4
1-1/2-12 UNF
Quick Release
1-1/4 1-1/4 NPT 1-1/4 7-1/2 9-1/16 3-1/2 2-9/64 4-1/32 2-5/32 3/4 1-1/16 1-1/4 1-5/8 1-1/32 1
1-3/4-12 UN MT
Quick Release
1-1/2 1-1/2 NPT 1-1/2 8-3/8 9-15/16 4 2-13/32 4-17/32 2-1/4 3/4 1-1/16 1-1/2 1-15/16 1-5/32 1-1/4
2-12 UN
Quick Release
2 2 NPT 2 9-1/2 11 4-3/8 2-21/32 5-1/16 2-1/2 3/4 1-1/8 1-7/8 2-1/2 1-5/32 1-1/4
2-1/2-12 UN
Quick Release

5000 Series NPT, UNS, UN THREADS Mono Flow Specifications

Nominal Pipe Size Shaft Thread (A) 5000 Series Standard
Right Hand Left Hand
Part Number Description Repair Cartridge Part Number Description Repair Cartridge
1/4 1/4 NPT 750625C R5000P 451671C 750624C L5000P 451670C
3/8 3/8 NPT 750110C R5100P 451251C 750109C L5100P 451250C
5/8-18 UNF 750142C R5124P 451253C 750141C L5124P 451252C
1/2 1/2 NPT 750112C R5200P 451258C 750111C L5200P 451257C
3/4-16 UNF 750147C R5224P 451260C 750146C L5224P 451259C
Quick Release 750150C Q5200P 451263C 750150C Q5200P 451263C
3/4 3/4 NPT 750089C R5300P 451265C 750088C L5300P 451264C
1-14 UNS 750152C R5324P 451267C 750151C L5324P 451266C
Quick Release 750155C Q5300P 451270C 750155C Q5300P 451270C
1 1 NPT 750114C R5400P 451272C 750113C L5400P 451271C
1-1/2-12 UNF 750157C R5424P 451274C 750156C L5424P 451273C
Quick Release 750160C Q5400P 451277C 750160C Q5400P 451277C
1-1/4 1-1/4 NPT 750116C R5500P 451279C 750115C L5500P 451278C
1-3/4-12 UN 750162C R5524P 451281C 750161C L5524P 451280C
Quick Release 750165C Q5500P 451284C 750165C Q5500P 451284C
1-1/2 1-1/2 NPT 750118C R5600P 451286C 750117C L5600P 451285C
2-12 UN 750167C R5624P 451288C 750166C L5624P 451287C
Quick Release 750170C Q5600P 451291C 750170C Q5600P 451291C
2 2 NPT 750120C R5700P 451293C 750119C L5700P 451292C
2-1/2-12 UN 750172C R5724P 451295C 750171C L5724P 451294C
Quick Release 750175C Q5700P 451298C 750175C Q5700P 451298C
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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