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Home/
Lifting Equipment/
Screwjacks, Linear Actuators, Rotary Unions and ACME Ball Screws and Nuts/
Duff Norton Rotary Union's/
"9000 Series" Rotary Union

"9000 Series" Rotary Union

Rotary union with advanced bellow sealing system and the option for flange mounted units.

Model:

9000 Series / SRU-4089

9000 Series Rotary Union

Features and Benefits

Advanced sealing system - Bellows sealing system provides superior sealing performance throughout the wear life of the rotary union.
Superior alignment - Dual bearings available in all sizes over 1 1/4" to provide superior alignment.
Resists debris build-up - Debris in contaminated media will not be captured in the Bellows sealing system which reduces clogging.

Options

Flanged mounted units are also available.

9000 Series Rotary Union Mono Flow Dimensions and Specifications

Dimensions

Nominal Pipe Size

Thread (A)

Inlet B (NPT)

1/4

1/4 NPT

1/4

4-3/8

1-3/4

1-1/8

2-9/16

1-1/16

1/4

5/8

9/16-18 MT

5/8-18 MT

3/8

3/8 NPT

3/8

4-3/8

1-3/4

1-1/8

2-9/16

1-1/16

3/8

11/16

5/8-18 MT

1/2

1/2 NPT

1/2

2-3/8

1-1/2

2-3/4

1-1/4

1/2

15/16

3/4-16 MT

7/8-14 MT

3/4-14 MT

7/8-16 MT

3/4

3/4 NPT

3/4

5-1/2

2-1/2

1-5/8

1-7/16

3/4

1-3/4

1-14 MT

1 NPT

6-1/8

1-3/4

3-3/8

1-3/4

1-11/32

1-1/4-12 MT

1-1/4

1-1/4 NPT

1-1/4

9-1/16

3-3/4

2-1/16

4-13/16

2-3/16

1-1/4

1-11/16

5/8

6-7/8

1-5/8-8 MT

8-15/16

1-15/16

6-3/4

1-5/8-12 MT

1-1/2

1-1/2 NPT

1-1/2

9-11/16

4/18

2-3/16

5-1/4

2-3/16

1-1/2

1-15/16

5/8

2-1/4

7-3/4

2-8 MT

10-1/4

2-3/4

7-15/16

2-12 MT

2 NPT

11-3/4

5-7/8

2-7/16

6-7/8

2-5/8

2-9/16

5/8

2-3/4

8-9/16

2-1/2

2-1/2 NPT

2-1/2

13-7/8

6-1/2

3-1/2

7-3/16

3-3/8

2-1/2

3 NPT

15-3/8

7-1/8

3-1/2

8-5/16

3-7/8

3-5/8

3-1/2-8 MT

15-3/4

3-7/8

Specifications

Nominal Pipe Size	Shaft Thread (A)	Right Hand Thread			Left Hand Thread
Nominal Pipe Size	Shaft Thread (A)	Part Number	Description	Repair Cartridge	Part Number	Description	Repair Cartridge
1/4	1/4 NPT	730432C	R030P	441647C	730431C	L030P	441646C
	9/16-18 MT	730434C	R024P	441649C	730433C	L024P	441648C
	5/8-18 MT	730436C	R024P	441651C	730435C	L024P	441650C
3/8	3/8 NPT	730444C	R100P	441659C	730443C	L100P	441658C
3/8	5/8-18 MT	730446C	R124P	441661C	730445C	L124P	441660C
1/2	1/2 NPT	730396C	R200P	441630C	730395C	L200P	441629C
	3/4-16 MT	730402C	R224P	441634C	730401C	L224P	441633C
	7/8-14 MT	730410C	R224P	441636C	730409C	L224P	441635C
	3/4-14 MT	730639C	R224P	441632C	730638C	L224P	441631C
	7/8-14 MT	730641C	R224P	441709C	730640C	L224P	441708C
3/4	3/4 NPT	730332C	R300P	441597C	730331C	L300P	441596C
3/4	1-14 MT	730338C	R324P	441599C	730337C	L324P	441598C
1	1 NPT	730303C	R400P	441579C	730302C	L400P	441578C
1	1-1/4-12 MT	730309C	R424P	441581C	730308C	L424P	441580C
1-1/4	1-1/4 NPT	440320C	R9500P	471460C	440319C	L9500P	471459C
	1-5/8-8 MT	440326C	R9524P-3	471462C	440325C	L9524P-3	471461C
	1-5/8-12 MT	440324C	R9524P-2	471464C	440323C	L9524P-2	471463C
1-1/5	1-1/2 NPT	440144C	R9600P	471364C	440143C	L9600P	471363C
	2-8 MT	440148C	R9624P-3	471368C	440147C	L9624P-3	471367C
	2-12 MT	440152C	R9624P-2	471374C	440151C	L96240P-2	471373C
2	2 NPT	440465C	R97004P	471554C	440464C	L9700P	471553C
2-1/2	2-1/2 NPT	440535C	R9800P	471556C	440534C	L9800P	471555C
3	3 NPT	440493C	R9900P	471558C	440492C	L9900P	471557C
3	3-1/2-8 MT	440499C	R9924P-3	471644C	440498C	L9924P-3	471643C

9000 Series Rotary Union Dual Flow Dimensions & Specifications

Dimensions

Nominal Pipe Size

Shaft Thread (A)

Inlet (B)

Outlet (J)

Siphon K (NPSM)

1/2

1/2 NPT

1/2

1/8

7-1/4

2-3/8

1-1/2

2-3/4

1-1/4

2-1/8

1/2

15/16

3/4-16 MT

7/8-14 MT

3/4

3/4 NPT

3/4

1/2

1/4

7-3/4

2-1/2

1-5/8

1-7/16

2-3/8

6-3/8

3/4

1-1/8

1-14 MT

1 NPT

1/2

3/8

8-1/2

1-3/4

3-3/8

1*3/4

2-5/8

7-1/8

1-3/8

1-1/4-12 MT

1-1/4

1-1/4 NPT

1-1/4

1/2

10-5/8

3-3/4

2-1/8

4-13/16

8-7/8

1-1/4

1-11/16

5/8

6-3/4

1-5/8-8 MT

10-7/8

8-3/4

1-5/8-12 MT

1-1/2

1-1/2 NPT

1-1/2

3/4

11-3/8

4-1/8

2-3/16

5/14

2-3/16

9-9/16

1-1/2

1-15/16

5/8

2-1/4

7-3/8

2-8 MT

11-15/16

2-3/4

10-1/8

7-15/16

2-12 MT

2 NPT

3/4

13-7/8

5-7/8

2-7/16

6-1/2

2-5/8

11-1/2

2-9/16

5/8

2-3/4

8-9/16

2-1/2

2-1/2 MT

16-7/8

6-1/2

3-1/2

7-1/4

3-3/8

2-1/2

3 NPT

2-1/2

1-1/4

18-3/4

7-1/8

3-1/2

8-5/15

3-7/8

15-5/8

3-5/8

Specifications

Nominal Pipe Size	Shaft Thread	Right Hand Thread			Left Hand Thread
Nominal Pipe Size	Shaft Thread	Part number	Description	Repair Cartridge	Part Number	Description	Repair Cartridge
1/2	1/2 NPT	730398C	R200S	441630C	730397C	L200S	441629C
	3/4-16 MT	730404C	R224S	441634C	730403C	L224S	441633C
	7/8-14 MT	730412C	R224S	441636C	730411C	L224S	441635C
3/4	3/4 NPT	730334C	R300S	441597C	730333C	L300S	441596C
3/4	1-14 MT	730340C	R324S	441599C	730339C	L324S	441598C
1	1 NPT	730305C	R400S	441579C	730304C	L400S	441578C
1	1-1/4 MT	730311C	R424S	441581C	730310C	L424S	441580C
1-1/4	1-1/4-12 NPT	440322C	R9500S	471460C	440321C	L9500S	471459C
	1-5/8-8 MT	440330C	R9524S-3	471462C	440329C	L9524S-3	471461C
	1-5/8-12 MT	440328C	R9524S-2	471464C	440327C	L9524S-2	471463C
1-1/2	1-1/2 NPT	440146C	R9600S	471364C	440145C	L9600S	471363C
	2-8 MT	440150C	R9624S-3	471368C	440149C	L9624S-3	471367C
	2-12 MT	440154C	R9624S-2	471374C	440153C	L96240S-2	471373C
2	2 NPT	440467C	R9700S	471554C	440466C	L9700S	471553C
2-1/2	2-1/2 NPT	440575C	R9800S	471556C	440574C	L9800S	471555C
3	3 NPT	440495C	R9900S	471558C	440494C	L9900S	471557C

9000 Series Rotary Union Dual flow Rotating Siphon Dimensions and Specifications

Dimensions

Nominal Pipe Size

Shaft Thread (A)

Inlet (B)

Outlet (J)

Siphon (K)

1/2*

1/2 NPT

1/2

1/4 Tube

7-1/4

2-3/8

1-1/2

2-3/4

1-1/4

2-1/8

0.249 to 0.252

1-5/8

6-1/4

1/2

15/16

3/4-14 MT

3/4-16 MT

7/8-14 MT

7/8-16 MT

3/4*

3/4 NPT

3/4

1/2

1/4 Pipe

7-3/4

2-1/2

1-5/8

1-7/16

2-3/4

0.522 to 0.528

1-3/4

6-13/16

3/4

1-1/8

1-14 MT

1 NPT

1/2

3/8 Pipe

8-1/2

1-3/4

3-3/8

1-3/4

2-5/8

0.657 to 0.663

7-11/16

1-3/8

1-1/4-12 MT

1-1/4

1-1/4 NPT

1-1/4

1/2

1/2 Pipe

10-5/8

3-3/4

2-1/8

4-13/16

0.803 to 0.808

5/8

9-7/16

1-1/4

1-11/16

6-7/8

1-5/8-12 MT

10-1/2

9-5/16

6-3/4

1-1/2

1-1/2 NPT

1-1/2

3/4

3/4 Pipe

11-3/8

4-1/8

2-3/16

5-1/4

2-3/16

3-1/4

0.991 to 0.997

3-1/4

5/8

10-1/8

1-1/2

1-15/16

7-3/8

2-1/4

2-12 MT

11-15/16

2-3/4

10-3/4

7-15/16

2-8 MT

2 NPT

3/4 Pipe

13-7/8

5-7/8

2-7/16

6-1/2

2-5/8

4-1/16

0.991 to 0.997

3-1/4

5/8

12-1/8

2-9/16

8-9/16

2-3/4

2-1/2

2-1/2 NPT

1-1/4

1 Pipe

16-7/8

6-1/2

3-1/2

7-1/4

3-3/8

1.241 to 1.247

3-3/4

14-11/16

2-1/2

3 NPT

2-1/2

1-1/4

1-1/4 Pipe

18-3/4

7-1/8

3-1/2

8-5/16

3-7/8

5-1/2

1.615 to 1.621

4-1/4

16-3/8

3-5/8

Specifications

Nominal Pipe Size	Shaft Thread (A)	Right Hand Thread			Left Hand Thread
Nominal Pipe Size	Shaft Thread (A)	Part Number	Description	Repair Cartridge	Part Number	Description	Repair Cartridge
1/2	1/2 NPT	730400C	R225-4	441630C	730399C	L225-4	441629C
	3/4-14	730406C	XR225-4	441632C	730405C	XL225-4	441631C
	3/4-16	730408C	XR225-4	441634C	730407C	XL225-4	441633C
	7/8-14	730414C	XR225-4	441636C	730413C	XL225-4	441635C
	7/8-16	730644C	XR225-4	441709C	730643C	XL225-4	441708C
3/4	3/4-14	730336C	R325-2	441597C	730335C	L325-2	441596C
3/4	1-14	730342C	XR325-2	441599C	730341C	XL325-2	441598C
1	1 NPT	730307C	R425-10	441579C	730306C	L425-10	441578C
	1-1/2-12	730315C	XR425-10	441583C	730314C	XL425-10	441582C
	1-1/4-12	730313C	XR425-10	441581C	730312C	XL425-10	441580C
1-1/4	1-1/4 NPT	440334	R9525-20	471460	440333	L9525-20	471459
1-1/4	1-5/8-12 MT	440336	XR9525-20	471464	440335	XL9525-20	471463
1-1/2	1-1/2 NPT	440251	R9625-30	471364	440250	L9625-30	471463
	2-12 MT	440438	XR9625-30	471374	440437	XL9625-30	471373
	2-8 MT	440449	XR9625-30	471368	440448	XL9625-30	471367
2	2 NPT	440475	R9725-30	471554	440474	L9725-30	471553
2-1/2	2-1/2 NPT	440585	R9825-40	471556	440584	L9825-40	471555
3	3 NPT	440587	R9925-50	471558	440586	L9925-50	471557

Performance Charts

Repair Parts

Nominal Pipe Size	Thread Rotation	Shaft		Ball Bearing	Bearing Retainer	Seal Ring	Bellows Gasket	Bellows Assembly	Housing Gasket
		Shaft Thread (A)	Part Number
1/4	LH	1/4 NPT	463474C	482020C	847022C	463472C	482033C	481010C	482026C
	RH		463475C
	LH	9/16-18 MT	463476C
	RH		463477C
	LH	5/8-18 MT	463478C
	RH		463479C
3/8	LH	3/8 NPT	463484C	482020C	847022C	463472C	482033C	481010C	482026C
	RH		463485C
	LH	5/8-18 MT	463486C
	RH		463487C
1/2	LH	1/2 NPT	463428C	482076C	854744C	463426C	482090C	481018C	482083C
	RH		463429C
	LH	3/4-16 MT	463436C
	RH		463437C
	LH	7/8-14 MT	463430C
	RH		463431C
	LH	3/4-14 MT	463434C
	RH		463435C
	LH	7/8-16 MT	463432C
	RH		463433C
3/4	LH	3/4 NPT	463291C	482134C	844654C	463287C	482148C	481035C	482141C
	RH		463292C
	LH	1-14 MT	463293C
	RH		463294C
1	LH	1 NPT	463265C	482188C	844341C	463246C	482201C	481048C	482195C
	RH		463266C
	LH	1-1/4-12 MT	463277C
	RH		463278C
1-1/4	LH	1-1/4 NPT	485070C	482241C	854753C	482246C	482255C	481062C	482248C
	RH		485071C
	LH	1-5/8-8 MT	485086C
	RH		485087C
	LH	1-5/8-12 MT	485084C
	RH		485085C
1-1/2	LH	1-1/2 NPT	483951C	482303C	863095C	482308C	482316C	481073C	482310C
	RH		483952C
	LH	2-8 MT	483953C
	RH		483954C
	LH	2-12 MT	483955C
	RH		483956C
2	LH	2 NPT	488181C	482362C	854757C	482786C	482788C	481247C	482787C
	RH		485182C
2-1/2	LH	2-1/2 NPT	485256C	482809C	854762C	482811C	482813C	481268C	482812C
	RH		485257C
3	LH	3 NPT	485155C	482839C	854766C	482841C	482843C	481289C	482842C
	RH		485156C
	LH	3-1/2-8 MT	485199C
	RH		485200C
	LH	3-1/2-12 MT	485189C
	RH		485198C

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.

Model

Thread Type

Part N°	Description	Repair Cartridge	Nominal Pipe Size	Shaft Thread (A)	Unit Price (Ex. VAT)
4089-T22331 730432C	R030P	441647C	1/4	1/4 NPT	Quote Required
4089-T22332 730434C	R024P	441649C	1/4	9/16-18 MT	Quote Required
4089-T22333 730436C	R024P	441651C	1/4	5/8-18 MT	Quote Required
4089-T22334 730444C	R100P	441659C	3/8	3/8 NPT	Quote Required
4089-T22335 730446C	R124P	441661C	3/8	5/8-18 MT	Quote Required
4089-T22336 730396C	R200P	441630C	1/2	1/2 NPT	Quote Required
4089-T22337 730402C	R224P	441634C	1/2	3/4-16 MT	Quote Required
4089-T22338 730410C	R224P	441636C	1/2	7/8-14 MT	Quote Required
4089-T22339 730639C	R224P	441632C	1/2	3/4-14 MT	Quote Required
4089-T22340 730641C	R224P	441709C	1/2	7/8-14 MT	Quote Required
4089-T22341 730332C	R300P	441597C	3/4	3/4 NPT	Quote Required
4089-T22342 730338C	R324P	441599C	3/4	1-14 MT	Quote Required
4089-T22343 730303C	R400P	441579C	1	1 NPT	Quote Required
4089-T22344 730309C	R424P	441581C	1	1-1/4-12 MT	Quote Required
4089-T22345 440320C	R9500P	471460C	1-1/4	1-1/4 NPT	Quote Required
4089-T22346 440326C	R9524P-3	471462C	1-1/4	1-5/8-8 MT	Quote Required
4089-T22347 440324C	R9524P-2	471464C	1-1/4	1-5/8-12 MT	Quote Required
4089-T22348 440144C	R9600P	471364C	1-1/5	1-1/2 NPT	Quote Required
4089-T22349 440148C	R9624P-3	471368C	1-1/5	2-8 MT	Quote Required
4089-T22350 440152C	R9624P-2	471374C	1-1/5	2-12 MT	Quote Required
4089-T22351 440465C	R97004P	471554C	2	2 NPT	Quote Required
4089-T22352 440535C	R9800P	471556C	2-1/2	2-1/2 NPT	Quote Required
4089-T22353 440493C	R9900P	471558C	3	3 NPT	Quote Required
4089-T22354 440499C	R9924P-3	471644C	3	3-1/2-8 MT	Quote Required
Availability Usually 1-2 Working Days - 1pm cut-off				More information about shopping on LiftingSafety Quotation Help Please choose the correct configuration of your desired product, then once complete - press on the 'Request Quote' button, this item will then be added to your basket (). To view your basket, simply click on the basket icon at the top of the page

9000 Series Rotary Union

Features and Benefits

Advanced sealing system - Bellows sealing system provides superior sealing performance throughout the wear life of the rotary union.
Superior alignment - Dual bearings available in all sizes over 1 1/4" to provide superior alignment.
Resists debris build-up - Debris in contaminated media will not be captured in the Bellows sealing system which reduces clogging.

Options

Flanged mounted units are also available.

9000 Series Rotary Union Mono Flow Dimensions and Specifications

Dimensions

Nominal Pipe Size

Thread (A)

Inlet B (NPT)

1/4

1/4 NPT

1/4

4-3/8

1-3/4

1-1/8

2-9/16

1-1/16

1/4

5/8

9/16-18 MT

5/8-18 MT

3/8

3/8 NPT

3/8

4-3/8

1-3/4

1-1/8

2-9/16

1-1/16

3/8

11/16

5/8-18 MT

1/2

1/2 NPT

1/2

2-3/8

1-1/2

2-3/4

1-1/4

1/2

15/16

3/4-16 MT

7/8-14 MT

3/4-14 MT

7/8-16 MT

3/4

3/4 NPT

3/4

5-1/2

2-1/2

1-5/8

1-7/16

3/4

1-3/4

1-14 MT

1 NPT

6-1/8

1-3/4

3-3/8

1-3/4

1-11/32

1-1/4-12 MT

1-1/4

1-1/4 NPT

1-1/4

9-1/16

3-3/4

2-1/16

4-13/16

2-3/16

1-1/4

1-11/16

5/8

6-7/8

1-5/8-8 MT

8-15/16

1-15/16

6-3/4

1-5/8-12 MT

1-1/2

1-1/2 NPT

1-1/2

9-11/16

4/18

2-3/16

5-1/4

2-3/16

1-1/2

1-15/16

5/8

2-1/4

7-3/4

2-8 MT

10-1/4

2-3/4

7-15/16

2-12 MT

2 NPT

11-3/4

5-7/8

2-7/16

6-7/8

2-5/8

2-9/16

5/8

2-3/4

8-9/16

2-1/2

2-1/2 NPT

2-1/2

13-7/8

6-1/2

3-1/2

7-3/16

3-3/8

2-1/2

3 NPT

15-3/8

7-1/8

3-1/2

8-5/16

3-7/8

3-5/8

3-1/2-8 MT

15-3/4

3-7/8

Specifications

Nominal Pipe Size	Shaft Thread (A)	Right Hand Thread			Left Hand Thread
Nominal Pipe Size	Shaft Thread (A)	Part Number	Description	Repair Cartridge	Part Number	Description	Repair Cartridge
1/4	1/4 NPT	730432C	R030P	441647C	730431C	L030P	441646C
	9/16-18 MT	730434C	R024P	441649C	730433C	L024P	441648C
	5/8-18 MT	730436C	R024P	441651C	730435C	L024P	441650C
3/8	3/8 NPT	730444C	R100P	441659C	730443C	L100P	441658C
3/8	5/8-18 MT	730446C	R124P	441661C	730445C	L124P	441660C
1/2	1/2 NPT	730396C	R200P	441630C	730395C	L200P	441629C
	3/4-16 MT	730402C	R224P	441634C	730401C	L224P	441633C
	7/8-14 MT	730410C	R224P	441636C	730409C	L224P	441635C
	3/4-14 MT	730639C	R224P	441632C	730638C	L224P	441631C
	7/8-14 MT	730641C	R224P	441709C	730640C	L224P	441708C
3/4	3/4 NPT	730332C	R300P	441597C	730331C	L300P	441596C
3/4	1-14 MT	730338C	R324P	441599C	730337C	L324P	441598C
1	1 NPT	730303C	R400P	441579C	730302C	L400P	441578C
1	1-1/4-12 MT	730309C	R424P	441581C	730308C	L424P	441580C
1-1/4	1-1/4 NPT	440320C	R9500P	471460C	440319C	L9500P	471459C
	1-5/8-8 MT	440326C	R9524P-3	471462C	440325C	L9524P-3	471461C
	1-5/8-12 MT	440324C	R9524P-2	471464C	440323C	L9524P-2	471463C
1-1/5	1-1/2 NPT	440144C	R9600P	471364C	440143C	L9600P	471363C
	2-8 MT	440148C	R9624P-3	471368C	440147C	L9624P-3	471367C
	2-12 MT	440152C	R9624P-2	471374C	440151C	L96240P-2	471373C
2	2 NPT	440465C	R97004P	471554C	440464C	L9700P	471553C
2-1/2	2-1/2 NPT	440535C	R9800P	471556C	440534C	L9800P	471555C
3	3 NPT	440493C	R9900P	471558C	440492C	L9900P	471557C
3	3-1/2-8 MT	440499C	R9924P-3	471644C	440498C	L9924P-3	471643C

9000 Series Rotary Union Dual Flow Dimensions & Specifications

Dimensions

Nominal Pipe Size

Shaft Thread (A)

Inlet (B)

Outlet (J)

Siphon K (NPSM)

1/2

1/2 NPT

1/2

1/8

7-1/4

2-3/8

1-1/2

2-3/4

1-1/4

2-1/8

1/2

15/16

3/4-16 MT

7/8-14 MT

3/4

3/4 NPT

3/4

1/2

1/4

7-3/4

2-1/2

1-5/8

1-7/16

2-3/8

6-3/8

3/4

1-1/8

1-14 MT

1 NPT

1/2

3/8

8-1/2

1-3/4

3-3/8

1*3/4

2-5/8

7-1/8

1-3/8

1-1/4-12 MT

1-1/4

1-1/4 NPT

1-1/4

1/2

10-5/8

3-3/4

2-1/8

4-13/16

8-7/8

1-1/4

1-11/16

5/8

6-3/4

1-5/8-8 MT

10-7/8

8-3/4

1-5/8-12 MT

1-1/2

1-1/2 NPT

1-1/2

3/4

11-3/8

4-1/8

2-3/16

5/14

2-3/16

9-9/16

1-1/2

1-15/16

5/8

2-1/4

7-3/8

2-8 MT

11-15/16

2-3/4

10-1/8

7-15/16

2-12 MT

2 NPT

3/4

13-7/8

5-7/8

2-7/16

6-1/2

2-5/8

11-1/2

2-9/16

5/8

2-3/4

8-9/16

2-1/2

2-1/2 MT

16-7/8

6-1/2

3-1/2

7-1/4

3-3/8

2-1/2

3 NPT

2-1/2

1-1/4

18-3/4

7-1/8

3-1/2

8-5/15

3-7/8

15-5/8

3-5/8

Specifications

Nominal Pipe Size	Shaft Thread	Right Hand Thread			Left Hand Thread
Nominal Pipe Size	Shaft Thread	Part number	Description	Repair Cartridge	Part Number	Description	Repair Cartridge
1/2	1/2 NPT	730398C	R200S	441630C	730397C	L200S	441629C
	3/4-16 MT	730404C	R224S	441634C	730403C	L224S	441633C
	7/8-14 MT	730412C	R224S	441636C	730411C	L224S	441635C
3/4	3/4 NPT	730334C	R300S	441597C	730333C	L300S	441596C
3/4	1-14 MT	730340C	R324S	441599C	730339C	L324S	441598C
1	1 NPT	730305C	R400S	441579C	730304C	L400S	441578C
1	1-1/4 MT	730311C	R424S	441581C	730310C	L424S	441580C
1-1/4	1-1/4-12 NPT	440322C	R9500S	471460C	440321C	L9500S	471459C
	1-5/8-8 MT	440330C	R9524S-3	471462C	440329C	L9524S-3	471461C
	1-5/8-12 MT	440328C	R9524S-2	471464C	440327C	L9524S-2	471463C
1-1/2	1-1/2 NPT	440146C	R9600S	471364C	440145C	L9600S	471363C
	2-8 MT	440150C	R9624S-3	471368C	440149C	L9624S-3	471367C
	2-12 MT	440154C	R9624S-2	471374C	440153C	L96240S-2	471373C
2	2 NPT	440467C	R9700S	471554C	440466C	L9700S	471553C
2-1/2	2-1/2 NPT	440575C	R9800S	471556C	440574C	L9800S	471555C
3	3 NPT	440495C	R9900S	471558C	440494C	L9900S	471557C

9000 Series Rotary Union Dual flow Rotating Siphon Dimensions and Specifications

Dimensions

Nominal Pipe Size

Shaft Thread (A)

Inlet (B)

Outlet (J)

Siphon (K)

1/2*

1/2 NPT

1/2

1/4 Tube

7-1/4

2-3/8

1-1/2

2-3/4

1-1/4

2-1/8

0.249 to 0.252

1-5/8

6-1/4

1/2

15/16

3/4-14 MT

3/4-16 MT

7/8-14 MT

7/8-16 MT

3/4*

3/4 NPT

3/4

1/2

1/4 Pipe

7-3/4

2-1/2

1-5/8

1-7/16

2-3/4

0.522 to 0.528

1-3/4

6-13/16

3/4

1-1/8

1-14 MT

1 NPT

1/2

3/8 Pipe

8-1/2

1-3/4

3-3/8

1-3/4

2-5/8

0.657 to 0.663

7-11/16

1-3/8

1-1/4-12 MT

1-1/4

1-1/4 NPT

1-1/4

1/2

1/2 Pipe

10-5/8

3-3/4

2-1/8

4-13/16

0.803 to 0.808

5/8

9-7/16

1-1/4

1-11/16

6-7/8

1-5/8-12 MT

10-1/2

9-5/16

6-3/4

1-1/2

1-1/2 NPT

1-1/2

3/4

3/4 Pipe

11-3/8

4-1/8

2-3/16

5-1/4

2-3/16

3-1/4

0.991 to 0.997

3-1/4

5/8

10-1/8

1-1/2

1-15/16

7-3/8

2-1/4

2-12 MT

11-15/16

2-3/4

10-3/4

7-15/16

2-8 MT

2 NPT

3/4 Pipe

13-7/8

5-7/8

2-7/16

6-1/2

2-5/8

4-1/16

0.991 to 0.997

3-1/4

5/8

12-1/8

2-9/16

8-9/16

2-3/4

2-1/2

2-1/2 NPT

1-1/4

1 Pipe

16-7/8

6-1/2

3-1/2

7-1/4

3-3/8

1.241 to 1.247

3-3/4

14-11/16

2-1/2

3 NPT

2-1/2

1-1/4

1-1/4 Pipe

18-3/4

7-1/8

3-1/2

8-5/16

3-7/8

5-1/2

1.615 to 1.621

4-1/4

16-3/8

3-5/8

Specifications

Nominal Pipe Size	Shaft Thread (A)	Right Hand Thread			Left Hand Thread
Nominal Pipe Size	Shaft Thread (A)	Part Number	Description	Repair Cartridge	Part Number	Description	Repair Cartridge
1/2	1/2 NPT	730400C	R225-4	441630C	730399C	L225-4	441629C
	3/4-14	730406C	XR225-4	441632C	730405C	XL225-4	441631C
	3/4-16	730408C	XR225-4	441634C	730407C	XL225-4	441633C
	7/8-14	730414C	XR225-4	441636C	730413C	XL225-4	441635C
	7/8-16	730644C	XR225-4	441709C	730643C	XL225-4	441708C
3/4	3/4-14	730336C	R325-2	441597C	730335C	L325-2	441596C
3/4	1-14	730342C	XR325-2	441599C	730341C	XL325-2	441598C
1	1 NPT	730307C	R425-10	441579C	730306C	L425-10	441578C
	1-1/2-12	730315C	XR425-10	441583C	730314C	XL425-10	441582C
	1-1/4-12	730313C	XR425-10	441581C	730312C	XL425-10	441580C
1-1/4	1-1/4 NPT	440334	R9525-20	471460	440333	L9525-20	471459
1-1/4	1-5/8-12 MT	440336	XR9525-20	471464	440335	XL9525-20	471463
1-1/2	1-1/2 NPT	440251	R9625-30	471364	440250	L9625-30	471463
	2-12 MT	440438	XR9625-30	471374	440437	XL9625-30	471373
	2-8 MT	440449	XR9625-30	471368	440448	XL9625-30	471367
2	2 NPT	440475	R9725-30	471554	440474	L9725-30	471553
2-1/2	2-1/2 NPT	440585	R9825-40	471556	440584	L9825-40	471555
3	3 NPT	440587	R9925-50	471558	440586	L9925-50	471557

Performance Charts

Repair Parts

Nominal Pipe Size	Thread Rotation	Shaft		Ball Bearing	Bearing Retainer	Seal Ring	Bellows Gasket	Bellows Assembly	Housing Gasket
		Shaft Thread (A)	Part Number
1/4	LH	1/4 NPT	463474C	482020C	847022C	463472C	482033C	481010C	482026C
	RH		463475C
	LH	9/16-18 MT	463476C
	RH		463477C
	LH	5/8-18 MT	463478C
	RH		463479C
3/8	LH	3/8 NPT	463484C	482020C	847022C	463472C	482033C	481010C	482026C
	RH		463485C
	LH	5/8-18 MT	463486C
	RH		463487C
1/2	LH	1/2 NPT	463428C	482076C	854744C	463426C	482090C	481018C	482083C
	RH		463429C
	LH	3/4-16 MT	463436C
	RH		463437C
	LH	7/8-14 MT	463430C
	RH		463431C
	LH	3/4-14 MT	463434C
	RH		463435C
	LH	7/8-16 MT	463432C
	RH		463433C
3/4	LH	3/4 NPT	463291C	482134C	844654C	463287C	482148C	481035C	482141C
	RH		463292C
	LH	1-14 MT	463293C
	RH		463294C
1	LH	1 NPT	463265C	482188C	844341C	463246C	482201C	481048C	482195C
	RH		463266C
	LH	1-1/4-12 MT	463277C
	RH		463278C
1-1/4	LH	1-1/4 NPT	485070C	482241C	854753C	482246C	482255C	481062C	482248C
	RH		485071C
	LH	1-5/8-8 MT	485086C
	RH		485087C
	LH	1-5/8-12 MT	485084C
	RH		485085C
1-1/2	LH	1-1/2 NPT	483951C	482303C	863095C	482308C	482316C	481073C	482310C
	RH		483952C
	LH	2-8 MT	483953C
	RH		483954C
	LH	2-12 MT	483955C
	RH		483956C
2	LH	2 NPT	488181C	482362C	854757C	482786C	482788C	481247C	482787C
	RH		485182C
2-1/2	LH	2-1/2 NPT	485256C	482809C	854762C	482811C	482813C	481268C	482812C
	RH		485257C
3	LH	3 NPT	485155C	482839C	854766C	482841C	482843C	481289C	482842C
	RH		485156C
	LH	3-1/2-8 MT	485199C
	RH		485200C
	LH	3-1/2-12 MT	485189C
	RH		485198C

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.

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

Housing

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"9000 Series" Rotary Union

Rotary union with advanced bellow sealing system and the option for flange mounted units.

9000 Series Rotary Union

9000 Series Rotary Union Mono Flow Dimensions and Specifications

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9000 Series Rotary Union Dual Flow Dimensions & Specifications

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9000 Series Rotary Union Dual flow Rotating Siphon Dimensions and Specifications

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Rotary Union Design

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9000 Series Rotary Union

9000 Series Rotary Union Mono Flow Dimensions and Specifications

Dimensions

Specifications

9000 Series Rotary Union Dual Flow Dimensions & Specifications

Dimensions

Specifications

9000 Series Rotary Union Dual flow Rotating Siphon Dimensions and Specifications

Dimensions

Specifications

Performance Charts

Repair Parts

Rotary Union Design

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