PERFORMANCE

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  High temperature resistance:

  NBR twin sphere rubber expansion joints bring two of the best in the world – oil and high temperature resistance.
  The base material of this oil-resistant expansion joint is NBR, which can handle the temperature range from – 40 to + 140 degree C.
  NBR rubber joints are used for high temperature applications. It is the perfect choice for oil and fuel, gas, solvent and fat. It also includes mineral oil, vegetable oil and animal oil, oil and gas sol, butane or propane gas. It is not suitable for steam and hot water.

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  Oil resistance:

  NBR oil-resistant twin sphere rubber expansion joint provides good oil resistance and hydrocarbons.
  The current type of NBR oil-resistant twin sphere rubber expansion joint has moderate aging performance and good wear resistance.
  It is suitable for gases, solvents and fats, mineral oils, vegetable oils and animal oils, oil and gas sols, butane or propane gases, etc

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  Wear resistance:

  NBR twin sphere rubber joint has wear resistant lining, steel cord reinforcement and CR cap of chloroprene rubber.
  The twin sphere rubber expansion joint has good overall oil resistance and wear resistance, flexibility, compressibility and air permeability. NBR wear-resistant rubber expansion joint has moderate aging characteristics.
  NBR twin sphere rubber expansion joints with abrasion resistance and oil resistance are suitable for petroleum-based products. Fuel aromatics content is up to 50%, oil-containing anticorrosive additives such as cooling water, lubricating oil and hydraulic oil, seawater.
  Temperature ranges from – 20 C to + 90 C, temporarily up to + 100 C.

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  Different environments and different designs:

  Flexible NBR twin sphere rubber expansion joint is used to absorb thermal expansion and reduce vibration in pipeline system. The rubber sealing surface of NBR rubber joint does not need gasket. NBR expansion joints are not suitable for hot water (100 degree C) and steam. For high vacuum, NBR rubber expansion joint of vacuum device must be used.

WORKING PRINCIPLE

PRODUCT PARAMETERS

NOTES:

1. Flange is available with DIN Standard,ANSI Standard,JIS Standard,and BS Standard.
2. Please sent us letter and drawing for customization if you have special requirements.
3. If this product is used for supplying water for high place, anti-pull-off device should be installed if the pipe has or fixed bracket is not as no fixed stay or fixed bracket or the force of fixed bracket is not large than axial force.

PRODUCT ALBUM

INSTALLATION INSTRUCTIONS

1.  Flexible rubber joints shall not exceed the displacement limit during installation.
2. In the installation of bolts to be symmetrical, to gradually pressure and tighten, to prevent  partial  leakage.
3.  When the rubber joint is laid flat, suspended, and vertically installed, the actual working axial displacement pressure of the rubber joint should be less than the supporting force of the pipeline, otherwise the anti-lifting device should be installed to prevent the work from being pulled.
4. The installation location of the rubber joint should be kept away from the heat source and ozone area. It is strictly forbidden to irradiate with strong radiation, expose to the sun and use the medium that does not meet the requirements of this product.
5. When the rubber joint is transported, loaded, unloaded or installed, it is strictly forbidden to sharpen the surface sealing surface.
6. When installing DN200mm or above, please use butterfly valve special flange or small diameter flange for mating flange, so as to avoid flange pull-out, misalignment, sealing surface fracturing and water leakage after installation.