Shop premium double sphere rubber expansion joint with excellent flexibility, vibration absorption, and long service life.

Ideal for HVAC, water supply, and industrial pipelines.

Product Description

Our double sphere rubber expansion joint is designed to provide superior flexibility and outstanding vibration absorption in pipeline systems. The double-sphere structure allows greater compression and elongation, effectively reducing stress on pumps, valves, and pipelines.

✅ Key Features:

Double-sphere design for higher displacement capacity.

High-quality EPDM/NBR rubber for durability and chemical resistance.

Excellent vibration and noise reduction for HVAC and industrial systems.

Easy installation with standard flanges (ANSI, DIN, JIS).

Connection data table for double sphere rubber expansion joints

Factory Showcase

✅ Applications:

1.HVAC and chilled water systems

2.Municipal water supply and drainage

3.Power plant and petrochemical pipelines

4.Marine and shipbuilding industry

By choosing our double sphere rubber expansion joint, you reduce equipment wear, cut maintenance costs, and extend the lifespan of your piping system.

Installation Guide

Ensure both pipeline flanges are aligned before installation.

Insert bolts diagonally and tighten gradually to prevent stress concentration.

Do not exceed the allowed axial, lateral, and angular movement.

Avoid direct sunlight and sharp objects during storage and installation.

For higher pressure systems, consider using limit rods to prevent overextension.

FAQ (Frequently Asked Questions)

Q1: What is the maximum pressure rating of this joint?
A1: Our standard double sphere rubber expansion joint supports PN10, PN16, and ANSI 150LB. Customized higher pressure levels are available.

Q2: Can it be used for hot water or chemical fluids?
A2: Yes. We offer EPDM for hot water and acid resistance, NBR for oil-based fluids, and other custom rubber materials upon request.

Q3: How long is the service life?
A3: Under normal working conditions, the service life can exceed 5–8 years with proper installation and maintenance.

Q4: Do you provide OEM/ODM service?
A4: Yes, we can manufacture according to customer drawings, logo, and special flange standards.

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.