DN300 Flange Type NBR Single Sphere Flexible Expansion Connection Rubber Compensator Joint

DN300 Flange Type NBR Single Sphere Flexible Expansion Connection Rubber Compensator Joint

A Single Sphere Rubber Expansion Joint (also known as a rubber compensator, flexible rubber joint, or rubber bellows) is a highly flexible piping component designed to absorb movement, reduce vibration, and compensate for misalignment in pipelines while maintaining a leak-proof seal.

Key Features:

Nominal Diameter (DN): 300 mm

Structure Type: Single Sphere Rubber Expansion Joint

Flange Type: Carbon steel or galvanized steel, drilled to ANSI, DIN, JIS or custom standards

Rubber Material: NBR (Nitrile Butadiene Rubber) – Excellent oil resistance

Reinforcement: Multi-layer nylon cord and steel wire for pressure resistance

Design Pressure: Usually PN10 / PN16 / PN25 (confirm as per project)

Movement Capability: Axial compression/extension, lateral offset, angular deflection

Temperature Range: -10°C to +80°C (depending on fluid compatibility)

Product Parameters

The single sphere rubber expansion joint consists of:

Rubber Body (Elastomer): Typically made of NBR (Nitrile Rubber), EPDM, Neoprene, or FKM (Viton) depending on the application.

Reinforcement Layers: Embedded fabric or steel wire to enhance pressure resistance.

Flanges or Pipe Ends: Available in flanged (ANSI, DIN, JIS, etc.) or threaded/sleeve-type connections.

Single Arch (Sphere) Design: Provides flexibility for axial, lateral, and angular movement.

Product details display

Key Functions

✔ Vibration & Noise Damping: Reduces stress from pumps, compressors, and machinery.
✔ Shock Absorption: Protects pipelines from water hammer and pressure surges.
✔ Misalignment Compensation: Allows slight pipe deviations without rigid connections.
✔ Thermal Expansion Compensation: Accommodates temperature-induced pipe expansion/contraction.
✔ Chemical & Corrosion Resistance: Depending on rubber material (e.g., EPDM for acid , NBR for oils).

Rubber Expansion Joint Product Processing

The company adheres to the business philosophy of "customer satisfaction is our first duty, all employees are responsible for creating quality, continuous improvement sets new heights, honest service builds reputation", and wholeheartedly provides high-quality products and professional services to new and old customers.

The factory mainly produces rubber expansion joints, duckbill check valves, dismantling joint, bellow expansion joints, compensators, repair clamp, 02S404 national standard waterproof casings, gate valves ,butterfly valves etc; and all products have passed ISO 9001:2015 quality management system certification; adopting national and industry standards, advanced manufacturing technology, strong R&D and manufacturing capabilities, they are widely used in water supply, drainage, electricity, chemical industry, gas, metallurgy, urban construction and environmental protection and other pipeline industries.