Single Ball Rubber Expansion Joint – Rubber Bellow Pipe Connector
for HVAC, Water, Oil & Chemical
Description:
Reliable single ball rubber expansion joint designed for vibration
isolation and thermal movement absorption. Widely used in water
supply, HVAC, sewage, chemical, and marine pipelines.
Highlights
1.Multi-Industry Application: Designed for HVAC, water treatment,
chemical, and fire protection pipelines.
2.Thermal & Pressure Compensation: Absorbs thermal expansion,
pressure pulsation, and pump vibrations.
3.Global Compatibility: Flanges available in DIN, ANSI, JIS, BS, EN
standards.
4.Wide Material Selection: EPDM for hot water/steam, NBR for oil,
Neoprene for seawater.
5.Long-Term Reliability: Anti-aging rubber compounds for extended
service life.
The Single Ball Rubber Expansion Joint, also known as a rubber
bellow connector, is engineered to provide superior flexibility and
vibration absorption in modern pipeline systems. Unlike rigid
connections, this joint effectively reduces stress on pumps,
valves, and other pipeline equipment by compensating for axial,
lateral, and angular movements.
With its compact spherical design, the joint can be installed in
pipelines where space is limited. It is an excellent choice for
HVAC systems, water distribution networks, fire protection
pipelines, marine engineering, and chemical transport lines.
The rubber body is reinforced with nylon cord and steel wire rings,
ensuring high tensile strength and pressure resistance. Depending
on the medium, we offer EPDM, NBR, Neoprene, and customized rubber
compounds to meet different project requirements.
This expansion joint is not only a flexible connector but also a
safeguard for pipeline integrity, extending the lifespan of the
system and reducing maintenance costs.
Factory Showcase
Application Fields
1. HVAC Systems: Absorbs thermal expansion and vibration in chilled
water and hot water pipelines.
2.Water Supply & Wastewater: Prevents stress caused by ground
settlement and pipe misalignment.
3. Oil & Gas Pipelines: Resistant to fuel, oil, and petrochemical
media.
4.Marine Industry: Suitable for seawater ballast, cooling, and
desalination systems.
5. Fire Protection: Ensures stable water pressure in fire-fighting
networks.
Installation Notes
1.Clean flange surfaces and ensure correct alignment before
installation.
2.Insert bolts gradually, tightening in a crisscross sequence.
3.Avoid over-compression; leave a small gap to allow expansion.
4.For vertical pipelines, add brackets or supports to bear pipe
weight.
5.Do not expose the joint to strong solvents, oils, or UV rays for
long periods.
FAQ
Q1: What industries mostly use single ball rubber expansion joints?
A1: They are widely used in HVAC, fire protection, municipal water,
marine engineering, and petrochemical industries.
Q2: Can this joint handle seawater or chemical liquids?
A2: Yes, EPDM is suitable for seawater, and we provide customized
compounds for chemical resistance.
Q3: How to extend the service life of the expansion joint?
A3: Avoid over-compression, protect from direct sunlight, and use
proper supports in vertical installations.
Q4: Is OEM service available?
A4: Yes, we offer customized materials, flange drilling, and
branding options.
