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Soft rubber connector with thread
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Soft rubber joint
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Double sphere rubber soft joint
Limit anti-pulling rubber soft joint
Limit anti-pulling rubber soft joint
Limit anti-pulling rubber soft joint

      Limit anti-pulling rubber soft joint

      The single ball limit rubber joint has good comprehensive performance, and it is widely used in chemical engineering, construction, water supply, drainage, petroleum, light and heavy industry, refrigeration, sanitation, plumbing, fire protection, power and other basic projects. KXT-F type rubber joint is specially used for cold water, hot water, compressed air, natural gas, etc. It has a unique design, novel structure and good sealing performance to solve the pipeline burst caused by thermal expansion and contraction and damage the pipeline connection equipment. Effective Improved pipeline life and equipment protection.

      "Meet you, it is not accidental", thank you very much for clicking into the "Hengzhong" official website in the vast information on the Internet. If you can provide you with technical services in [Limited anti-pulling rubber joint] It is the honor of Hengzhong! Next you will see the technical information of Hengzhong limit anti-pulling rubber soft joint technology for you, hoping to help you choose!

      Product aliases: flexible rubber joints, rubber soft connections, shock absorbers, flange soft connections, rubber flexible joints, rubber pipe joints
      Product specifications: [DN32mm-DN4000mm]
      Product pressure: 0.6-2.5MPa
      Damping level: A, excellent shock absorption
      Product certification: ISO9001-2008
      Scope of application: [Acid, alkali, corrosion, oil, hot water, cold water, compressed air, compressed natural gas, etc.]
      天然橡胶、三元乙丙橡胶、丁晴橡胶、氟橡胶等 Material: Natural rubber, EPDM, NBR, Viton, etc.
      Product color: black, see the product display picture for the actual color.
      Working temperature: -40 degrees to 80 degrees (also can process high temperature resistant rubber joints)

      • Stable quality: implement quality monitoring throughout the process, meticulous and comprehensive detection!

      • Reasonable price: efficient internal cost control, reducing expenses and benefiting customers!

      • Fast delivery: advanced production lines, sufficient stocking, shortened delivery time!

      Performance characteristics

      1. Small size, light weight, good flexibility, convenient installation and maintenance.

      2. After installation, it can absorb the lateral, axial and angular displacement caused by the vibration of the pipeline; it is not restricted by the concentricity of the pipeline and the non-parallel flange.

      3. After installation, it can reduce the noise generated by the vibration of the pipeline pump and the like, and has strong vibration absorption ability.

      4. Internal seamless high-pressure rubber joint, which can effectively prevent the corrosive medium from eroding the inner wall of the rubber joint in high temperature, acid and alkali resistant, and oil resistant pipelines, which improves the service life.

      Use installation

      1. It is strictly forbidden to install the ultra-displacement limit of the soft rubber joint during installation.

      2. When the rubber joint is installed on the ground, suspended or vertically, the actual working axial displacement pressure of the rubber joint is less than the supporting force of the pipeline, otherwise an anti-pulling device should be installed to prevent the pressure from being pulled during work.

      3. The pipeline must have a fixed support or a fixed bracket, and the force of the fixed bracket must be greater than the axial force. For vertical installation and overhead installation, the corresponding fixing brackets and force brackets must be installed at both ends of the product to prevent the work from being pulled off after being stressed.

      4. The mounting bolts should be tightened gradually and symmetrically to prevent local leakage.

      5. Keep away from heat sources during installation. It is strictly forbidden to use media that does not meet the requirements of this product.

      Connection method:

      Generally there are screw connection, flange connection, clamp connection and so on. Executive standard: HCRJ 070-1999

      Precautions

      1. When installing flexible rubber joints in pipelines, they must be kept in a natural state and do not artificially deform the product.

      When the pipeline medium is resistant to acid, alkali, oil, high temperature and other special materials, a joint with a gear higher than the working pressure of the pipeline should be selected.

      2. The flange connecting the rubber joint should be a valve flange or a flange conforming to GB / T9115.1 (RF).

      3. The normal applicable medium for flexible rubber joints is ordinary water with a temperature of 0-60 ° C. For special media such as oil, acid and alkali, high temperature and other corrosive and hard textures, the corresponding special resistant material should be selected. Rubber joint, cannot be used blindly or universally.

      4. Flexible flexible rubber joints should be located on the side of the water spring when it is used at the inlet and outlet of the pump. A metal reducing joint should be installed between the spring and the water spring.

      5. When the displacement of the pipeline is greater than or equal to the maximum compensation of the joint, the number of joints should be increased to parallel the displacement. It is strictly forbidden to adjust the excess of the pipeline to make the joint at the limit of the flexural displacement and deviation state, let alone exceed the limit ( Telescopic, displacement, deflection, etc.), see the table below for specific installation data.

      6. For high-level water supply or suspended water supply, the pipeline should be fixed on a hanger, bracket or anchorage, and the joint cannot bear the weight and axial force of the pipeline, otherwise the joint should be equipped with an anti-pulling device (the bearing capacity must be greater than the pipeline Axial force).

      7. When installing the rubber joint, the screw of the bolt should extend to the outside of the joint, and the bolt on the end face of each flange should be tightened repeatedly and uniformly to prevent pressure deviation. The screw joint should be tightened evenly with a standard wrench. Do not use a booster stalk to force the live joint to slip, edge, and break, and check regularly to avoid loosening and water leakage.

      8. After the rubber soft joint is subjected to the pressure for the first time (such as: installation test pressure, etc.) or before being re-enabled for a long time, the bolts should be re-pressurized and tightened before being put into operation.

      9. When using or storing soft rubber joints, avoid high temperature, ozone oil and acid and alkali environments. Pipes used outdoors or facing the sun should be constructed with sunshades, and it is strictly forbidden to storm, rain or wind. It is strictly forbidden to paint or twist insulation material on the joint surface. Due to aging problems of rubber products, they should be inspected and replaced in a timely manner.

      10. Flexible rubber joints are strictly forbidden to exceed the displacement limit during installation.

      11. The mounting bolts should be symmetrical and tightened gradually to prevent local leakage.

      12. When installing rubber joints on the ground, in the air, or vertically, the actual working axial displacement pressure of the rubber joints should be less than the supporting force of the pipeline; otherwise, anti-pullout devices should be installed to prevent work from being pulled out under pressure.

      13. Rubber joints should be kept away from heat sources and ozone areas. Strong radiation is strictly prohibited. Expose and use media that does not meet the requirements of this product.

      14. During transportation, loading and unloading, and installation of rubber joints, it is strictly forbidden to cut the surface sealing surface with sharp instruments.

      15: For products above DN200MM, please use butterfly valve special flanges or small diameter flanges to prevent flange pull-out, water leakage and water leakage after installation. If you have other questions, please contact our company

      technical standard

      Products should be marked in the following order: product code, type code, structure code, performance code, working pressure, nominal diameter.

      The product and structure codes are as follows: flexible rubber joint RFJ, single sphere D, double sphere S, elbow W, concentric reducer Yt, eccentric reducer Yp, fan coil joint F.

      Mark example: RFJD-1.6 × 200 ,. Refers to a single ball flexible rubber joint with a nominal diameter of 200mm, the working pressure is 1.6Mpa.

      Working pressure: The test pressure of the rubber joint is 5 times the working pressure, and the burst pressure is 3 times the working pressure.

      Vacuum resistance: Rubber joints with a nominal inner diameter below 300mm and a working pressure above 1.6Mpa have a vacuum resistance of not less than 100Kpa. For other specifications, the vacuum of the forehead is stipulated by the supplier and the buyer.

      Safety evaluation of rubber joints for drinking water systems: safety angle of rubber joints for drinking water systems

      When rubber joints are used in drinking water systems, the water quality after passing the product should meet the relevant requirements of GB / T5749 "Sanitary Standards for Drinking Water" and GB / T17219 "Safety Evaluation Standards for Drinking Water Distribution Equipment and Protective Materials" Regulations and requirements.

      Requirements for metal flanges and flat unions: Metal flanges shall meet the requirements of GB / T9119, and flat unions shall meet the requirements of GB / T3289.37.

      Requirements when the rubber joint end face is reinforced with a traveller: When the rubber joint end face is reinforced with a traveller, the traveller should be kept round and located in the same plane of the same year.

      Experiment

      1 Product specifications of appearance quality: Appearance quality is determined by visual inspection, and product specifications are measured with vernier calipers or tape measure.

      2 Physical properties test of rubber

      1). The tensile strength and elongation at break of the rubber shall be measured in accordance with GB / T528.

      2). The hardness of rubber is measured according to GB / T531.

      3). The brittleness temperature test of the rubber compound shall be conducted in accordance with GB / T1682.

      4). The adhesion and strength of rubber and fabric shall be measured in accordance with GB / T532.

      5). Hot air aging test of rubber compound shall be conducted according to GB / T3512.

      6) .Acid and alkali resistance test of rubber compound shall be conducted according to GB / T1690.

      3 Finished product hydraulic and vacuum test

      1) The hydraulic test is carried out in accordance with the provisions of 6.3 in GB / T5563.

      2) The vacuum test shall be carried out in accordance with the relevant provisions in Chapter 2-5 of GB / T5567.

      4) Displacement performance test: Displacement performance test shall be performed in accordance with Appendix A.

      5) The form and location of the reinforced traveller in the end face of the rubber joint: The form and location of the reinforced traveler in the end face of the rubber joint are examined by X-ray fluoroscopy.

      6) The water quality inspection of the water passing through the product shall be conducted in accordance with the provisions of GB / T5749 and GB / T17219.

      Specifications

      Material of parts

      限位防拉脱橡胶软接头剖面图.png

      No. Part Material
      1 Body Natural rubber (NR), neoprene (CR), butyl rubber (IIR), nitrile rubber (NBR), fluoro rubber (FKM), EPDM
      2 Inner & Outer Rubber Natural rubber (NR) Neoprene (CR) Butyl rubber (IIR) Nitrile rubber (NBR) Fluorine rubber (FKM) Ethylene propylene rubber (EPDM) Polytetrafluoroethylene (PTFE)
      3 Body Carcass Nylon cord fabric
      4 Reinforcing Ring Multi-strand coppering steel wire
      5 Flange Cast and forged carbon steel (Q235), Stainless steel (201, 304, 316, 321), Plastic (CPVC, PVDF, PPH, UPVC, RPP)

      Technical parameters

      Item Item Model KXT-1 KXT-2 KXT-3 A, such as medium oil, acid and alkali substances
      B. Special requirements for working temperature
      C. You can also write to us to customize
      D. Please specify when ordering
      A. If media is oil, acid or alkali.
      B. If special requirements for working temperature
      C. If OEM orders with drawings or samples
      D. Please Inform us about above when ordering
      MpaWoring pressure 1.0 (10) 1.6 (16) 2.5 (25)
      Burst Pressure 2.0 (20) 3.0 (30) 4.5 (45)
      Kpa Vacuum 53.3 (400) 86.7 (650) 100 (750)
      Applicable Temperature -20 ℃ ~ + 115 ℃ (special can reach -30 ℃ ~ + 250 ℃) -20 ℃ ~ + 115 ℃ (-30 ℃ ~ + 250 ℃ under special conditions)
      Applicable Medium Air, compressed air, water, sea water, oil, acid, alkali, etc.
      Note: the materials of main parts are the same with those of KXT type

      Main data

      Nominal diameter DN
      Nominal Diameter
      (Mm)
      length
      LengthLmm
      Special length
      LengthLmm
      Axial displacement
      Axial displacement mm
      Lateral displacement
      Haorizontal isplacement mm
      Deflection angle
      Angular deflection (a1 + a2) °
      mm

      Inch

      Extension Compression
      32 1.25 95 130/150 6 9 9 15
      40 1.5 95 130/150 6 10 9 15
      50 2 105 130/150/200 7 10 10 15
      65 2.5 115 130/150/200 7 13 11 15
      80 3 135 130/150/200 8 15 12 15
      100 4 150 130/200 10 19 13 15
      125 5 165 130/150/200 12 19 13 15
      150 6 180 130/150/200 12 20 14 15
      175 7 200 / 12 20 14 15
      200 8 200 130/150/210 16 25 twenty two 15
      225 9 200 / 16 25 twenty two 15
      250 10 230 130/150/200 16 25 twenty two 15
      300 12 245 130/150/200 16 25 twenty two 15
      350 14 255 130/150/200 16 25 twenty two 15
      400 16 255 200 16 25 twenty two 15
      450 18 255 200 16 25 twenty two 15
      500 20 255 200 16 25 twenty two 15
      550 twenty two 255 / 16 25 twenty two 15
      600 twenty four 260 200 16 25 twenty two 15
      700 28 260 / 16 25 twenty two 15
      800 32 260 / 16 25 twenty two 15
      900 36 260 / 16 25 twenty two 15
      1000 40 260 / 18 26 twenty four 15
      1200 48 260 / 18 26 twenty four 15
      1400 56 350 / 20 28 26 15
      1600 64 350 / 25 35 30 10
      1800 72 350 / 25 35 30 10
      2000 80 350 / 25 35 30 10
      2200 88 400 / 25 35 30 10
      2400 96 400 / 25 35 30 10
      2600 104 400 / 25 35 30 10
      2800 112 400 / 25 35 30 10
      3000 120 400 / 25 35 30 10
      Note: 1. Special requirements can be made according to user drawings. The flange standard adopts GB / T9115.1-2000. Optional (GB, JB, HG, CB, ANSI, DIN, BSEN, NF, EN, JIS, ISO, etc. ) Standard flange production. Rubber spheres can be made of natural rubber, EPDM, neoprene, butyl rubber, nitrile rubber, fluorine rubber, etc.
      2. Use DN200 or higher product for suspended water supply. The pipeline must have fixed support or fixed bracket, otherwise the product should be installed with anti-pulling device.
      3. The user uses a rubber joint, and the corresponding flange should be a valve flange or a GB / T9115.1 (RF) flange.
      Notes: 1. For OEM orders with special requirement, rubber joints can be made according to customers' drawings. Generally, flange standard is GB / T9115.1-2000, other GB, JB, HG, CB, ANSI, DIN, BSEN, NF, EN, JIS, ISO flanges are also available upon request. Material of rubber body can be NR natural rubber, EPDM, Neoprene, IIR butyl rubber, NBR Buna-N, FKM, etc.
      2.When rubber joints size above DN200 are used for overhead water supply system, the pipes must be equipped with fixed supports or fixed brackets, otherwise control units shall be installed on rubber joints.
      3.Matching flanges of rubber joints shall be valve flanges or GB / T9115.1 (RF) flanges.

      The Belt and Road Initiative demonstrates the style of great powers and builds up national brands! Achieving the brand is not the pursuit of Hengzhong people. How to make Hengzhong [Limited anti-pulling rubber soft joints] stable and reliable quality, create greater customer value, and provide more assured products for the society is the direction that Hengzhong people are pursuing! Co-create national brands, promote Made in China, and stand on the tide of the world, but my Chinese sons and daughters! Hengzhong is willing to work with you to build the Chinese dream, and wish you all the best!

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      Gongyi Hengzhong Water Supply Material Co., Ltd.

      Address: South Section of Yong'an Road, Gongyi City, Henan Province

      Phone: 0371-64032688

      Fax: 0371-64032611

      Mobile: 13938406796 15838275686

      Website: http://cddk666.com

      Email: hengzhonggongshui@163.com

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