2025 Oil Resistant ANSI 150lb Pn16 DIN Forged Carbon Steel Flange End EPDM NBR Single Sphere Ball Flexible Rubber Expansion Joint

• Customization: Available
• Connection: Flange/Union
• Kind: Corrugated Compensator
• Model NO.: NHFLEX-A TYPE
• Type: Axial/Horizontal/Angle
• Head Code: Round
• Material: Nr, EPDM, NBR, FKM
• Surface Treatment: Galvanized (Zinc Plated) or Spraying
• Customized: Customized
• Certification: CE, JIS, ISO9001
• Warranty: 12 Months
• Application: Chemical/Building/Plumbing/Firefighting/Electric
• Product Name: Connector, Expansion Joint, Compensator, Dumper
• Flange/Union Material: Carbon Steel, Stainless Steel, Bronze, Cast Iron
• Reinforced: Nylon Fabric/Metal Reinforcement
• Function: Vibration and Noise Adsorption
• Applicable for: Piping System, Water Supply, HVAC System, etc.
• Transport Package: Carton Packaging
• Specification: DN20-DN3000
• Trademark: OEM
• Origin: China
• HS Code: 4009120000
• Production Capacity: 1000000PCS

Product Description

Product Description

Flanged/Union Threaded Connection Flexible Rubber Expansion Joints Pipe Connector Rubber Compensator

Rubber Flexible Joint Features:
Small size, light weight, good elasticity, easy installation and maintenance

Installation can produce transverse, axial, angular displacement, not subject to pipeline not centered, flange is not parallel and other restrictions

When working, it can reduce the noise transmitted by the structure, with strong shock-absorbing ability. Rubber joints have good comprehensive performance and are widely used in chemical industry, construction, plumbing, fire fighting, electric power and other basic projects.

Rubber joints are mainly used in pipelines with large vibration and frequent changes of heat and cold, which can absorb the vibration generated by the work of the pump, thus reducing the noise and avoiding the loosening of the screws, and thus are also called shock absorbers or vibration dampers.

Rubber flexible joint is a kind of pipeline connection parts, can connect two different materials, different straight through or different axis of the pipeline. Rubber flexible joint can relieve the pipeline system due to thermal expansion and contraction, frequent vibration and other reasons caused by pipeline deformation, displacement and other problems, so as to protect the safety operation of the pipeline.
Advantages: good elasticity, sealing, corrosion resistance and so on.

 

Main Products

1. Single Ball Rubber Expansion Joint:

Standard Specification:

 

Max.Working Pressure				2.5Mpa
Operating Temperature				-20ºC-100ºC
Vacuum KPa (mmHg)				44.9(350)
Applicable Media				Sea Water, Drinking Water, etc.
Flange Standard				DIN, JIS, GOST, ANSI, etc.

Component Parts:

Item	Part	Material
1	Body Outer Layer	NR, EPDM, NBR
2	Body lnner Layer	NR, EPDM, NBR
3	Reinforced Fabric	Nylon
4	Wire	Steel
5	Flange	Zinc Plated/Sprayed CS, SS304, SS316, Cast Steel

NHFLEX-A TYPE Rubber Joint Size Chart:

SIZE	LENGTH				Movemont Capablllty
DN	F/F				Comp.	Ext.		Lateral	Angular
(mm)	(mm)				(mm)	(mm)		(mm)	(degree)
32	95/130/152				9	6		9	15
40	95/130/152				10	6		9	15
50	105/130/152				10	7		10	15
65	115/130/152				13	7		11	15
80	130/152				15	8		12	15
100	130/152				19	10		13	15
125	130/152/170				19	12		13	15
150	130/152/180				20	12		14	15
200	130/152/205				25	16		22	15
250	130/203/240				25	16		22	15
300	130/203/260				25	16		22	15
350	203/265				25	16		22	15
400	203/265				25	16		22	15
450	203/265				25	16		22	15
500	203/265				25	16		22	15
600	265				25	16		22	15

* Supply range can be up to DN3000, detailed data can be offered upon request.
Control units must be used when piping is not properly anchored.
The rated pressure can be above 2.5MPa, but products will only be sold with control units.
Pressure rating is based on 30ºC operating temperature. The pressure rating is reduced at higher temperatures.
Rated pressure in the above table is the maxlmum "working pressure". Test pressure is 1.5 times "working pressure", Burst pressure is 4 times "work pressure".

 

2. Double Ball Rubber Expansion Joint:

Standard Specification:

Max.Working Pressure				2.5Mpa
Operating Temperature				-20ºC-100ºC
Vacuum KPa (mmHg)				44.9(350)
Applicable Media				Sea Water, Drinking Water, etc.
Flange Standard				DIN, JIS, GOST, ANSI, etc.

Component Parts:

Item	Part	Material
1	Body Outer Layer	NR, EPDM, NBR, FKM
2	Body lnner Layer	NR, EPDM, NBR, FKM
3	Reinforced Fabric	Nylon
4	Wire	Steel
5	Flange	Zinc Plated/Sprayed CS, SS304, SS316, Cast Steel

NHFLEX-B TYPE Rubber Joint Size Chart:

SIZE	LENGTH				Movemont Capablllty
DN	F/F				Comp.	Ext.		Lateral	Angular
(mm)	(mm)				(mm)	(mm)		(mm)	(degree)
40	175				10	20		20	30
50	175				10	20		20	30
65	175				10	20		20	30
80	175				10	20		20	30
100	225				15	30		25	30
125	225				15	30		25	30
150	225				15	30		25	30
200	325				20	40		30	30
250	325				20	40		30	30
300	325				20	40		30	30
350	350				20	40		30	30
400	350				20	40		30	30
450	350				25	45		30	30
500	350				25	45		30	30
600	350				25	45		30	30

* Control units must be used when piping is not properly anchored.
The rated pressure can be above 2.5MPa, but products will only be sold with control units.
Pressure rating is based on 30ºC operating temperature. The pressure rating is reduced at higher temperatures.
Rated pressure in the above table is the maximum "working pressure". Test pressure is 1.5 times "working pressure", Burst pressure is 4 times "work pressure".
 

3. Rubber Metal Pipe Connector: 

Standard Specification:

Max.Working Pressure				1.0Mpa
Operating Temperature				-20ºC-100ºC
Applicable Media				Sea Water, Drinking Water, etc.
Flange Standard				DIN PN10 PN16

Component Parts:

Item	Part	Material
1	Body	NR, EPDM, NBR
2	Flange	Cast Steel

NHFLEX-C TYPE Rubber Joint Size Chart:

SIZE	LENGTH			DIN PN10								L1
DN	F/F			D	D1				n-M
(mm)	(mm)			(mm)	(mm)							(mm)
20	70			109	75				4 X M12			12
25	70			119	85				4 X M12			16
32	70			145	100				4 X M16			16
40	70			156	110				4  X M16			16
50	70			171	125				4 X M16			16
65	70			192	145				4 X M16			16
80	70			207	160				8 X M16			18
100	70			227	180				8 X M16			18
125	70			257	210				8 X M16			18
150	70			294	240				8 X M20			18
200	90			343	295				8 X M20			20

* Stable pipeline fixed points and proper pipeline are required to absorb axial forces.
The rubber metal pipes are installed free of tension.
The mounting length should be 70mm, do not load on train, twist or bend position.
The installation should be in an easily accessible location where maintenance and inspection of the system is easy to do.
Additional seals are not required, since rubber protrudes at the sealing surface.
Keep the joint away from heat sources such as welding machines or sun light.
Do not assemble the joint directly in touch with rubber surface or other fitting.

4. Union Thread Connection Rubber Expansion Joint:

Standard Specification:

Max.Working Pressure				2.0Mpa
Operating Temperature				-20ºC-100ºC
Vacuum KPa (mmHg)				101.3(760)
Applicable Media				Sea Water, Drinking Water, etc.
Union Standard				BSPT, NPT

Component Parts:

Item	Part	Material
1	Body Outer Layer	NR, EPDM, NBR, FKM
2	Body lnner Layer	NR, EPDM, NBR, FKM
3	Reinforced Fabric	Nylon
4	Union	Zinc Plated/Sprayed Carbon Steel, Cast Iron, Bronze, Stainless Steel

NHFLEX-D TYPE Rubber Joint Size Chart:

SIZE	Movement Capabilty
DN	Comp.			Ext,			Lateral			Angular
(mm)	(mm)			(mm)			(mm)			(degree)
20	22			6			22			45
25	22			6			22			45
32	22			6			22			45
40	22			6			22			45
50	22			6			22			45
65	24			6			24			45
80	24			6			24			45

* Pressure/Vacuum rating is based on neutral installed length(F/F)
Pressure rating is based on 30ºC operating temperature.The pressure rating is reduced at higher temperatures.
Weights in the above table are joints with BSPT Malleadble Cast Iron threaded  connections.
Rated pressure in the above table is the maximum "working pressure". Test pressure is 1.5 times "working pressure", Burst pressure is 4 times "work pressure".
Normally, the connections are based on BSPT, NPT or other standards are available upon request.

Rubber Flexible Joint Professional Manufacturer: 

Application

Compensating for Thermal Expansion and Contraction: Rubber expansion joints compensate for thermal expansion and contraction caused by temperature variations in the pipeline. They prevent excessive stress on the pipeline system due to temperature changes, thereby protecting the pipes from damage.

Absorbing Vibrations and Impacts: Rubber expansion joints absorb stresses caused by vibrations and impacts in the pipeline system, reducing the transmission of vibrations and noise. This helps protect the pipeline and related equipment from damage.

Compensating for Pipe Movements: During installation and operation, pipeline systems may experience certain degrees of pipe movement. Rubber expansion joints compensate for these movements, ensuring the proper functioning of the pipeline system.

Leak Prevention: Rubber expansion joints provide sealing performance in pipeline systems, reducing the risk of leaks and ensuring the safe operation of the pipelines.

Application:
Water, Sea Water, Fresh Water, Sewage Fluid, Warm Water, Weak Acid Fluid, Soda Fluid, etc. Pipeline
Connected with pumps, valves, firefighting equipment, HVAC system, etc.

 

Company Profile

Ningjin NINGHAO Machinery Co.,Ltd. Founded on No November 19, 2010. It is located in No.2 taishan road, econnmic and technological development zone, ningjin county, dezhou city, shandong province. It covers an area of 120 acres, with more than 80 employees, among has all kinds of advanced production and inspection equipment.

We can offer all kinds of rubber expansion joints. Our products include: single ball flexible rubber expansion joint, double sphere rubber expansion joint, rubber-metal pipe connectors, thread-connection rubber expansion joint and tie rods set for rubber expansion joint. Rubber expansion joint main material: EPDM ,NBR ,NR, FR. The standard of the flange: ANSI150, DIN, JIS10K. The flange material: carbon steel, stainless steel, casting steel.

We have been in exporting for many years. We have wide business relations in the world. Now the main supply countries: Spain, Italy, Netherlands, Austria, French, Vietnam, India and many other countries. Our customers and clients all think highly of us.

Last, looks forward to the cooperation with you sincerely!

Packaging & Shipping

Certifications