DN250 EPDM Single Ball Reinforced Rubber Bellow Flexible Expansion Joint movable lug with tie rod

A rubber joint with tie rods is a type of flexible pipe connector designed to absorb movements, reduce vibration, and compensate for misalignment in piping systems.

The tie rods are structural components used to limit the movement of the joint caused by internal pressure or external forces, preventing overextension or damage.

Components:

Rubber Joint:

Made from elastomers like EPDM, Neoprene, or Nitrile.

Flexible and can absorb axial, lateral, and angular movements.

Often reinforced with nylon or fabric plies.

Flanges:

Typically carbon steel, stainless steel, or ductile iron.

Connect to the piping system.

Tie Rods (Control Rods):

Steel rods installed across the flanges.

Prevent excessive elongation or compression of the rubber body due to internal pressure.

Typically include washers and nuts for adjustment and load distribution.

Purpose of Tie Rods:

Restrict axial movement (expansion/contraction).

Prevent pull-out due to internal pressure thrust forces.

Protect adjacent equipment by limiting stress transfer.

Increase safety and longevity of the joint and piping.

Design Considerations:
Pressure rating of the rubber joint.

Number and size of tie rods based on thrust force.

Material compatibility with the fluid and environment.

Movement capacity (axial, lateral, angular).

Typical Applications:

• HVAC systems
• Pump and compressor connections
• Industrial piping (chemical, water, wastewater)
• Marine and power generation systems

Shipping packaging pictures of rubber joints

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.