Multi-Passage Hydraulic Rotary Joints (Rotary Unions)

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5000 pc
Supply Capability:
50000 pc/month

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CNBM Rotary Joint Selection Chart


Max. Operating Parameters

Media

Series

Size

Passages

Pres.(bar)

Temp.()

Speed(RPM)

Water

Steam

Thermal Oil

Air

Hydraulic Oil

BA

1/4" to 2-1/2"

1 or 2

11

90

1,000

YES



YES


BC

1/4" to 2-1/2"

1

70

120

3,000




YES

YES

M

1/8" to 1-1/4"

up to 4

200

80

250

YES



YES

YES

MT

1/4" to 3/4"

1 or 2

200

80

250




YES

YES

SA

3/4" to 3-1/2"

1 or 2

17

220

250


YES




SK

3/4" to 3-1/2"

1 or 2

7

315

250



YES



NA

1-1/2" to 6"

1 or 2

17

220

300


YES




K

1/4" to 1-1/4"

up to 4

210

80

3,000




YES

YES

 C

1/2" to 1-1/2" 

1 or 2 

10 

 120

 100

YES






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Q:Is the pipe seat a pipe joint or a standard connection?
It is used more and more widely, especially in high pressure, high temperature, large diameter and thick wall pipes. It replaces the traditional method of branch pipe connection. The main body of the branch pipe is made of high quality forgings. The material is the same as the pipe material. Carbon steel, alloy steel, stainless steel and so on. The branch pipe and the head adopts a welding, pipe seat and branch pipe or other pipe (such as tube plug, etc.), instruments and valves connected with butt welding, socket welding, threaded types.
Q:Joint type of pipe joint
G is the pipe thread collectively (Guan), 55, 60 degrees division is functional, commonly known as tube round. The thread is machined from a cylindrical surface.ZG is a commonly known as cone, cone thread processing, pipe joint is generally the domestic old standard thread marked Rc thread RMetric threads are represented by pitch, and American and British threads are expressed in thread per inch. This is their greatest difference,Metric thread is 60 degrees equilateral tooth type, thread is isosceles tooth type thread 55 degrees, 60 degrees.Metric units for metric threads; British and American systems.Pipe thread is mainly used for pipe connection, the internal and external threads are closely matched with straight pipe and cone pipe two kinds. Nominal diameter refers to the diameter of the pipe to be connected. Obviously, the diameter of the thread is larger than the nominal diameter.1/4, 1/2, 1/8 is the nominal diameter of inch inch, inch in inches.
Q:How do you disconnect the PVC pipe joint that has been glued?
A sticky PVC pipe joint is not normally open. Only cut off and re connect.Do you know?
Q:Do you need adhesive for the sleeve joint of PVC wire pipe?
It is, in theory, but very rarely used. Wiring can be done without adhesive.
Q:What is the difference between the PVC joint and the PVC pipe joint?
Two, plastic pipe type 1, PVC (PVC-U) plastic wire pipe (hard tube), 2 and PE threading pipe (winding hose) 3, plastic bellows (flame retardant bellows, wire harness casing, high density bellows, high temperature protective casing, etc.)Three. Ceramic tube 1, threading porcelain bushing 2, glass fiber woven insulating sleeve
Q:Is the hydraulic pipe joint stainless steel or carbon steel?
Hydraulic pipe head for material 20, 45, 27SiMn and so on. The corrosion resistance of hydraulic pipe fittings is not stainless steel per se,
Q:How to compile the welding technology of 12CrlMoVG header and pipe joint
1 welding method argon arc welding wire H08CrMoG.2, process:(1) welding example, economizer, evaporator section, tube bundle, water wall and low temperature superheater are made of No. 20 steel, and high temperature superheater tube is 12Cr1MoV.
Q:Why are the sleeve joint leaks?
The locking nut is too loose or too tight. Is not screwed tight, then the connector body and the sleeve cone is not tight, the card edge is wedged into the outer periphery of the tube to form a reliable seal; overdone, the card sets yield deformation and loss of elasticity; two cases were leaking. Solution: tighten the nut according to the required torque.
Q:What does pipe joint "DD" mean?
The strengthening pipe joint is a medium strength cast iron, which has good casting performance, simple process and small casting stress
Q:What are the sealing ways of pipe joints? Thank you
The pipe joint is the connecting tool between the pipe and the pipe, and it is the connection point between the component and the pipe. It plays an indispensable role in pipe fittings. It is one of the two main components of hydraulic pipe. The pipe joint is used for straight connection such as instrument, and the connection forms are socket welding or threaded connection. It is mainly used in low pressure pipes with small diameter, used for parts that need to be packed frequently or used as final adjustment of threaded pipe fittings. Fast and easy and related products were included, should adopt the structure of metal surface contact sealing structure, structure of gasket seal is usually used for conveying water, oil, air and other general pipeline, the use of malleable cast iron material. In addition, the use of requirements and prices are also factors to consider when selecting.

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