What should be confirmed before ordering?

Confirm size, connection, material, medium, pressure, temperature and installation conditions against the final project requirement.

Are the listed ratings applicable to every size?

No. Ratings and dimensions vary by model, size, material and end connection. Use the supplier drawing and final technical data for confirmation.

Can materials and dimensions be customized?

The catalog lists standard ranges. Material, connection and dimensions may be supplied to project requirements after technical confirmation.

Which documents can be requested?

Dimensional drawing, material information, inspection record and packing documentation can be requested with the order.

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Pipes Fittings & Flanges Expansion Joints

Expansion Joints

Double Ball Flexible Rubber Joint

Double-sphere flexible rubber expansion joint; DN40–DN800; PN1.0 / PN1.6 / PN2.5 MPa.

Quick Specifications

Type Double-sphere flexible rubber expansion joint

Size DN40–DN800

Material NR / NBR / EPDM / CR / IIR rubber; reinforced cord; steel or stainless flanges

Pressure PN1.0 / PN1.6 / PN2.5 MPa

Connection Flanged

Temperature −15 to 115 °C; special service −30 to 250 °C

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Product Overview

Twin-sphere construction provides increased movement absorption for piping systems. Key configuration must be confirmed against the actual medium, design pressure, design temperature, connection standard and installation conditions.

Parameter	Value
Model	KST
Product Family	Rubber expansion joint
Size Range	DN40–DN800
Pressure Rating	PN1.0 / PN1.6 / PN2.5 MPa
Body / Main Material	NR / NBR / EPDM / CR / IIR rubber; reinforced cord; steel or stainless flanges
End Connection	Flanged
Temperature Range	−15 to 115 °C; special service −30 to 250 °C
Typical Application	Twin-sphere construction provides increased movement absorption for piping systems.
Ordering Notes	Confirm selected size, connection, material, pressure-temperature limit and required certification before order.
Catalog Reference	Catalog p. 5

Double Ball Flexible Rubber Joint

Quick Specifications

Product Overview

Q: What should be confirmed before ordering?

Q: Are the listed ratings applicable to every size?

Q: Can materials and dimensions be customized?

Q: Which documents can be requested?

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