Emsal Vana
Products / Expansion joints · 310–329 / Double sphere rubber expansion joint
PRODUCT GROUP 312 · EXPANSION JOINTS

Double sphere rubber expansion joint

Double sphere rubber expansion joints are flexible connectors with two spheres that absorb vibration, expansion, contraction, misalignment and mechanical stresses in pipelines. They accommodate more movement than single sphere models and extend the life of the system.

DOUBLE SPHERE RUBBER EXPANSION JOINTTYPE 312 · EMSAL VANA
DN
1/2" – 2"
PN
10
MATERIAL
SS316 · SS304
STANDARD
DIN
CONNECTION
Female threaded connection
TEST
10879
FLOW DIRECTION
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Double sphere rubber expansion joint

Technical data

01
Nominal size1/2" – 2"
Pressure ratingPN10
Service temperature
≤ +110 °C
Manufacturer's declaration. Exact value in the quotation.
StandardDIN
Connection typeWelded
End connection standardFemale threaded connection
TestTS 10879 DIN 30680

The standards listed apply to stocked products. Contact us for other standards.

Material

02

Material options for double sphere rubber expansion joints are listed below.

Bellows
NBREPDM
Union
Stainless steelBronze

Features

03

Advantages

  • Greater movement capacity thanks to the double sphere design
  • Isolates vibration and noise
  • Accommodates thermal expansion and misalignment
  • Compact, lightweight design
  • Easy installation and maintenance
  • Economical – especially in low/medium-pressure systems

Applications

  • HVAC systems (heating, cooling, ventilation)
  • Pump and compressor discharges
  • Water and wastewater treatment plants
  • Ship machinery and seawater lines
  • Chemical process lines (with a suitable rubber grade)
  • Fire-fighting systems
  • Industrial pipelines

Downloads

04
DatasheetPDF · TR/EN · dimension table, parts list
Open datasheet
CAD modelSTEP · DXF · by nominal size
IN PREPARATION
3.1 certificate samplePDF · EN 10204 · TR/EN
Open sample

Related products

05
Double sphere rubber expansion joint · 312 · SS316 · 1/2"–2" · PN10