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    Rubber Expansion Joint (1).jpg
    Rubber Expansion Joint (2).jpg
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    Single-Sphere-Connector-With-Flange-7_1800x1800.webp

    China Single Sphere Rubber Expansion Joint - Durable Flange Type from Leading Suppliers and Factory

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    Our premium flange type single sphere joint is meticulously designed to meet ANSI, DIN, and BS standards, ensuring top-quality performance and reliability.

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    Crafted from durable materials, our main body features a combination of EPDM, NBR, and neoprene, providing exceptional resistance to wear and environmental factors.

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    For added strength, our product is lined with Chinlon cord fabrics, offering enhanced durability and performance under pressure.

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    The frame is constructed from hard steel wires, ensuring robust support for the overall structure of the joint, while the flanges are available in both carbon steel and stainless steel options to suit diverse applications.

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    The union is made from malleable iron, providing excellent flexibility and durability for efficient connections.

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    We offer a size range from 1/2 to 24, making our joint suitable for various industrial needs.

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    As a leading supplier and manufacturer in China, our factory ensures the highest standards of quality in every product, making us your reliable source for superior flange type joints.

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      Product Details

      Description
      🔧 The Single Sphere Rubber Expansion Joint is designed to absorb vibration, reduce noise, and compensate for thermal expansion or contraction in piping systems.
      🌀
      Superior Flexibility Spherical structure allows axial, lateral, and angular movement in all directions.
      🛡️
      High-Quality Materials EPDM or NBR rubber with multi-ply synthetic fabric and steel ring reinforcement.
      ⚙️
      Wide Application Range Ideal for HVAC, water pipelines, industrial processing, and pump installations.
      📐
      DN32 to DN1200 Available in a wide range of sizes to suit diverse pipeline configurations.
      🌍
      International Standards Flanges conform to ANSI, DIN, JIS, and other global standards.
      🏭
      Equipment Protection Reduces stress on pumps, valves, and meters caused by thermal and mechanical movement.

      Featuring a compact and highly flexible design, it is ideal for use in HVAC systems, water pipelines, industrial processing lines, and pump installations.

      Manufactured from high-quality EPDM or NBR rubber and reinforced with multi-ply synthetic fabric and steel rings, the single sphere rubber expansion joint offers excellent resistance to pressure, temperature, and chemical exposure. Its spherical structure allows for superior movement capabilities in all directions, including axial compression, elongation, and lateral deflection.

      This expansion joint is widely used in municipal water supply, sewage treatment plants, building piping networks, and chemical processing facilities. It helps protect sensitive equipment such as pumps, valves, and meters by reducing stress caused by thermal and mechanical movement.

      The flanges are typically made of carbon steel or stainless steel, conforming to international standards such as ANSI, DIN, or JIS. Available in sizes ranging from DN32 to DN1200, the single sphere rubber expansion joint is a trusted solution for ensuring flexible, long-lasting, and maintenance-friendly pipeline connections.

      As one of China's leading manufacturers of rubber joints and pipeline accessories, we provide durable, tested, and globally certified products to meet your project needs.

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      Standard of Implementation
      Category Details
      Type Flange
      Face to Face API609, BS5155, DIN3202, ISO5752
      Flange DIN, BS, UNI, ISO, ANSI, AS, JIS
      Mounting Flange ISO5211
      Working Pressure PN16 (200PSI)
      Application HVAC, Water Supply & Sewage, Food & Beverage, Chemical/Petrochemical Processing, Power and Utilities, Paper and Pulp, Ship Building
      Standard Materials Of Main Parts
      NO PART NAME MATERIAL
      1 Sphere EPDM/NBR
      2 Flange CS Coated With Zinc
      Dimensions: (mm)
      SIZE L Pn16 Pn10 ANSI150
      in DN D D1 n-d1 D D1 n-d1 D D1 n-d1
      1.25 32 95 140 100 4-18 140 100 4-18 117 89 4-16
      1.5 40 95 150 110 4-18 150 110 4-18 127 98.5 4-16
      2 50 105 165 125 4-18 165 125 4-18 152 120.5 4-19
      2.5 65 115 185 145 4-18 185 145 4-18 178 139.5 4-19
      3 80 135 200 160 8-18 200 160 8-18 191 152.5 4-19
      4 100 150 220 180 8-18 220 180 8-18 229 190.5 8-19
      5 125 165 250 210 8-18 250 210 8-18 254 216 8-22
      6 150 180 285 240 8-23 285 240 8-23 279 241.5 8-22
      8 200 210 340 295 12-23 340 295 8-23 343 298.5 8-22
      10 250 230 405 355 12-17 395 350 12-23 406 362 12-25
      12 300 255 460 410 12-17 445 400 12-23 483 432 12-25
      14 350 255 520 470 16-27 505 460 16-23 533 476 12-29
      16 400 255 580 525 16-30 565 515 16-27 597 539.5 16-29
      18 450 255 640 585 20-30 615 565 20-27 635 578 16-35
      20 500 255 715 650 20-33 670 620 20-27 699 635 20-32
      24 600 260 840 770 20-36 780 725 20-30 813 749.5 20-35
      Rubber Expansion Joint
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      Frequently Asked Questions
      ❓ What is a single sphere rubber expansion joint used for?
      A single sphere rubber expansion joint is used to absorb vibration, reduce pipeline noise, and compensate for thermal expansion or contraction in piping systems. It is commonly installed in HVAC systems, water supply pipelines, pump connections, and industrial processing lines to protect equipment and extend system service life.
      ❓ What rubber materials are available for the sphere body?
      The sphere body is available in EPDM (Ethylene Propylene Diene Monomer) and NBR (Nitrile Butadiene Rubber). EPDM is suitable for water, steam, and outdoor applications, while NBR is preferred for oil and fuel-related media. Custom material options may be available based on specific project requirements.
      ❓ What flange standards does the single sphere rubber expansion joint comply with?
      The flanges conform to a wide range of international standards including ANSI (American), DIN (German), JIS (Japanese), BS (British), UNI (Italian), ISO, and AS (Australian) standards. This ensures compatibility with most global piping systems and simplifies installation across different regions.
      ❓ What is the maximum working pressure of this expansion joint?
      The standard working pressure rating is PN16, which is equivalent to approximately 200 PSI (pounds per square inch). This makes it suitable for most commercial and industrial pipeline applications. Higher pressure ratings may be available upon request for specialized applications.
      ❓ What size range is available for the single sphere rubber expansion joint?
      The single sphere rubber expansion joint is available in sizes ranging from DN32 (1.25 inches) up to DN1200, covering a comprehensive range of pipeline diameters. Dimension specifications including flange outer diameter (D), bolt circle diameter (D1), and bolt hole configuration (n-d1) are provided for Pn16, Pn10, and ANSI150 standards.
      ❓ In which industries is the single sphere rubber expansion joint commonly applied?
      This product is widely used across multiple industries including HVAC (heating, ventilation, and air conditioning), municipal water supply and sewage treatment, food and beverage processing, chemical and petrochemical plants, power generation utilities, paper and pulp mills, and shipbuilding. Its versatility and compliance with international standards make it a preferred choice globally.

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