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Flexibility Rubber Expansion Joint For Thermal Expansion Contraction And Vibration Absorption Made From Flexible, Durable Materials Such As EPDM NBR Neoprene Or Viton Integral Or Loose Flanges For Secure Conne

Flexibility Rubber Expansion Joint For Thermal Expansion Contraction And Vibration Absorption Made From Flexible, Durable Materials Such As EPDM NBR Neoprene Or Viton Integral Or Loose Flanges For Secure Conne

Categories	Rubber Expansion Joint
Brand Name:	ZHICHENG
Model Number:	KXT JGD
Place of Origin:	henan china
MOQ:	1
Price:	3.5
Payment Terms:	L/C,D/A,D/P,D/P,Western Union,MoneyGram
Supply Ability:	50＋piece＋3 work days
Delivery Time:	5-8work days
Packaging Details:	carton; wooden box
Drawing:	Offer
Applicable Media:	Air,water,sewage,acid,oil,etc.
Model:	DN20-DN3000
Media Compatibility:	Water, Air, Chemicals, Etc.
Rubber:	EPDM,NBR
Technical:	Vulcanized
Standard Of Flange:	DIN,JIS,ANSI,etc.
Burst Pressure:	8.0Mpa
Explosion Pressure:	3 times of working pressure
Clamp Material:	Carbon steel , Stainless steel
Customized Support:	OEM, ODM
Structure:	Single Sphere
Corrosion Resistance:	Yes
Movement Capacity:	Up to 4 inches
Temperature:	-30 ℃ ~ 150 ℃

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Product Details
Company Profile

Flexibility Rubber Expansion Joint For Thermal Expansion Contraction And Vibration Absorption Made From Flexible, Durable Materials Such As EPDM NBR Neoprene Or Viton Integral Or Loose Flanges For Secure Conne

Product Description

A rubber expansion joint with a built-in negative pressure ring is a type of flexible

connector used in piping systems to compensate for thermal expansion, vibrations,

and slight misalignments. The negative pressure ring (also called a vacuum support

ring or anti-collapse ring) is an internal structural component designed to prevent the

rubber joint from collapsing inward when exposed to negative pressure or vacuum

conditions.

Installation technical parameters

NO	Name	Material
1	Outer/inner rubber	NR, EPDM, NBR, Neoprene etc.
2	Frame	Nylon cord fabric
3	Pressurized ring	Steel wire strand
4	Flange	Carbon steel galvanized, paint ductile iron, stainless steel etc.

Operation condition
Working temperature		-15℃~80℃(-30℃~150℃)
Working pressure		6-40bars(PN6-PN40)
Test pressure		1.5 times of working pressure
Explosion pressure		2 times of working pressure
Applicable media		Air, water, sewage, sea water, acid, alkali, oil etc.

Key Features of Rubber Expansion Joints with Negative Pressure Rings

1. Rubber Body:

• Made from flexible materials like EPDM, NBR, Neoprene, or Viton, depending on the

fluid or gas being transported.

• Absorbs vibrations, reduces noise, and compensates for movements in the piping system.

2. Negative Pressure Ring:

• Usually made of stainless steel, carbon steel, or reinforced plastic.

• Installed inside the rubber joint to provide structural support under vacuum or low-pressure

conditions.

• Prevents the rubber walls from collapsing inward when the system experiences a negative

pressure.

3. Reinforcement Layers:

• The rubber body is reinforced with fabric or metal wire for added strength and durability.

• Works in combination with the negative pressure ring to handle both positive and negative

pressure conditions.

4. Flanged Ends:

• The joint typically has integral flanged ends for easy connection to the piping system.

• The flanges can conform to standards like ASME, DIN, or JIS.

Advantages

1. Prevention of Collapse:

• The negative pressure ring ensures the integrity of the joint under vacuum conditions.

2. Improved Longevity:

• Reduces stress on the rubber body, extending the service life of the expansion joint.

3. Vibration Absorption:

• Maintains the joint’s flexibility and vibration-dampening properties even in vacuum

scenarios.

4. Customizable:

• Available in various sizes, pressure ratings, and materials to suit different applications.

choose the products of ZHICHENG ?
1.24 hours online service-- anytime, anywhere can provide what you want.
2.100% quality inspection before shippment.
3.Strong production capability and strict quality control.

Packing & Delivery

Packaging

1.Inner package: plastic film with carton cases.
2.Outer package: wooden cases(usually the size of 1100mm*1100mm*1100mm).

Product installation

When the customer installs, we will provide installation instructions, installation

notes and maintenance instructions. and this
is the installation picture of the DN1800 rubber expansion joint.

FAQ

Name: Flexibility Rubber Expansion Joint For Thermal Expansion Contraction And Vibration Absorption Made From Flexible Durable Materials Such As EPDM NBR Neoprene Or Viton Integral Or Loose Flanges For Secure Conne
Brand: ZHICHENG
Price: 3.5 USD

Q: Are you a trading company or a manufacturer?
A: We are manufacturers of rubber expansion joints, metal expansion joints, flexible hoses,

dismantling joints, trimmer joints,flange adapters and flanges with over 30 years experience.
Q: Do you have a catalogue?
A: Yes, we do. Please let me know your email or instant messenger and we will send you our

catalogue.
Q: Can you provide drawings and technical information?
A: Yes, our specialist technical department will design and supply drawings and technical data.
Q: Do you provide samples? Are they free of charge or do you charge for them?
A: Yes, we can provide samples free of charge, but transport costs are borne by the customer.
Q: Can the products be manufactured to the customer's requirements?
A: Yes, the above specifications are standard specifications and we can design and manufacture

as required.

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Product Tags:

Flexibility Rubber Expansion Joint

NBR Neoprene Rubber Expansion Joint

Flexibility Rubber Expansion Joint For Thermal Expansion Contraction And Vibration Absorption Made From Flexible, Durable Materials Such As EPDM NBR Neoprene Or Viton Integral Or Loose Flanges For Secure Conne

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Flexibility Rubber Expansion Joint For Thermal Expansion Contraction And Vibration Absorption Made From Flexible, Durable Materials Such As EPDM NBR Neoprene Or Viton Integral Or Loose Flanges For Secure Conne

Flexibility Rubber Expansion Joint For Thermal Expansion Contraction And Vibration Absorption Made From Flexible, Durable Materials Such As EPDM NBR Neoprene Or Viton Integral Or Loose Flanges For Secure Conne

Flexibility Rubber Expansion Joint For Thermal Expansion Contraction And Vibration Absorption Made From Flexible, Durable Materials Such As EPDM NBR Neoprene Or Viton Integral Or Loose Flanges For Secure Conne

Product installation

FAQ

Flexibility Rubber Expansion Joint

NBR Neoprene Rubber Expansion Joint

Flexibility Rubber Expansion Joint For Thermal Expansion Contraction And Vibration Absorption Made From Flexible, Durable Materials Such As EPDM NBR Neoprene Or Viton Integral Or Loose Flanges For Secure Conne

Company Profile: Zhicheng Valve & Fitting Manufacturing Co., Ltd.

Overview

Zhicheng Valve & Fitting Manufacturing Co., Ltd. is a leading manufacturer specializing in the production of

high-quality valves and fittings. Since our establishment, we have been dedicated to delivering superior products

and exceptional services to our clients globally. Equipped with advanced manufacturing facilities and a team of

experienced professionals, we cater to diverse needs across various industries.

Product Range

Our product portfolio includes a wide variety of valves, fittings, and related accessories. These products are extensively

used in sectors such as oil and gas, petrochemical, power generation, metallurgy, and water treatment. We emphasize

strict quality control at every stage of production, from material selection to final inspection, ensuring that our products

meet international standards for reliability and durability.

Commitment to Quality

At Zhicheng, we prioritize quality above all. Our manufacturing processes are designed to uphold the highest standards,

ensuring that our products consistently meet and exceed customer expectations. We are committed to continuous

improvement and innovation, striving to enhance our product offerings and technological capabilities.

Customer-Centric Approach

With a business philosophy centered on "Quality First, Customer Foremost," we aim to build long-lasting relationships

with our clients. We offer comprehensive technical support and tailored solutions to meet specific project requirements.

Our professional team is dedicated to providing timely and efficient service, ensuring complete customer satisfaction.

Vision and Mission

Zhicheng Valve & Fitting Manufacturing Co., Ltd. aspires to be a global leader in the valve and fitting industry. Our mission

is to create value for our customers through innovative products and exceptional service. We are committed to sustainability

and ethical business practices, contributing to a better future for our industry and the communities we serve.