Expansion Joints

Rubber Expansion Joint -- Single Arch EPDM NBR

Single-arch moulded rubber expansion joints in EPDM or NBR with reinforced nylon or polyester cord fabric and steel wire helix for vacuum resistance. Flanged ends with integral rubber flange faces eliminate the need for separate gaskets. Designed for absorbing thermal expansion, vibration isolation, and misalignment in water, wastewater, HVAC, and chemical pipelines. Arch profile provides multi-directional movement capability in a compact face-to-face dimension.

Key Applications

Pump vibration isolationHVAC thermal expansionWater pipeline movement absorptionSewage pump dischargeCooling tower piping
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Technical Specifications

Product Type Rubber Expansion Joint -- Single Arch EPDM NBR
Category Expansion Joints
Size Range 1/2" to 48" (DN15 to DN1200)
Pressure Class 150# to 2500# (PN10 to PN420)
End Connections Flanged, Threaded, Socket Weld, Butt Weld
Operation Manual, Gear Operated, Electric Actuated, Pneumatic Actuated
Standards ASME B16.34, API 600, API 602, BS 1873, DIN 3352

Material Options

Carbon Steel

ASTM A216 WCB, A105, A350 LF2

Stainless Steel

SS304, SS316, SS316L, SS321, SS347

Alloy Steel

ASTM A217 WC6, WC9, C5, C12

Duplex Steel

F51, F53, F55, Super Duplex

Exotic Alloys

Monel, Hastelloy, Inconel, Titanium

Bronze & Brass

Gunmetal, Aluminum Bronze, Naval Brass

Purchase Options

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Features & Benefits

High Performance

Designed for reliable operation under demanding conditions with minimal maintenance requirements.

Quality Assurance

Complete material traceability, mill test certificates, and compliance with international standards.

Wide Application Range

Suitable for Pump vibration isolation, HVAC thermal expansion, Water pipeline movement absorption, Sewage pump discharge, Cooling tower piping and many other industrial applications.

Expert Support

Technical assistance for valve selection, sizing, and application engineering from our experienced team.

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