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China factory - Henan Zhicheng Valve Fittings Manufacturing Co., Ltd.

Henan Zhicheng Valve Fittings Manufacturing Co., Ltd.

  • China ,Henan
  • Verified Supplier
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  3. Flexibility Rubber Expansion Joint For Thermal Expansion Contraction And
China Flexibility Rubber Expansion Joint For Thermal Expansion Contraction And
China Flexibility Rubber Expansion Joint For Thermal Expansion Contraction And

  1. China Flexibility Rubber Expansion Joint For Thermal Expansion Contraction And
  2. China Flexibility Rubber Expansion Joint For Thermal Expansion Contraction And
  3. China Flexibility Rubber Expansion Joint For Thermal Expansion Contraction And
  4. China Flexibility Rubber Expansion Joint For Thermal Expansion Contraction And
  5. China Flexibility Rubber Expansion Joint For Thermal Expansion Contraction And

Flexibility Rubber Expansion Joint For Thermal Expansion Contraction And

  1. MOQ： 1
  2. Price： 3.5
  3. Get Latest Price
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 ℃
Brand Name ZHICHENG
Model Number KXT JGD
Place of Origin henan china

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  1. Product Details
  2. Company Details

Product Specification

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 ℃ Brand Name ZHICHENG
Model Number KXT JGD Place of Origin henan china
High Light Flexibility Rubber Expansion Joint ，NBR Neoprene Rubber Expansion Joint

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

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.


Contact us for more details about price and packing, shipping and
discount now!



Company Details

Bronze Gleitlager

,

Bronze Sleeve Bushings

 and 

Graphite Plugged Bushings

 from Quality China Factory

  • Business Type:

    Manufacturer

  • Year Established:

    1985

  • Total Annual:

    6000000-9000000

  • Employee Number:

    100~150

  • Ecer Certification：

    Verified Supplier

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 sup... 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 sup...

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Get in touch with us

  • Reach Us
  • Henan Zhicheng Valve Fittings Manufacturing Co., Ltd.
  • Pipeline Industrial Park, Xicun Town, Gongyi City, Henan Province, China
  • https://www.pipe-expansionjoint.com/

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