T282 · Rubber Expansion Joints

Double Sphere Rubber Expansion Joint

A twin-arch moulded rubber bellows — two spheres in series take up larger axial, lateral and angular movement than a single arch, while damping vibration and noise on pumps, HVAC and process lines.

DN 32 – DN 600Size rangeUp to 25 barWorking pressure-30 to +150 °CTemperature

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Technical Data

Product code	T282
Body	Reinforced rubber body, fabric layers, reinforced ring & stainless outer ring
Rubber	EPDM / NBR / CR / NR
Flange standards	EN PN10 / PN16 / PN25, ANSI Class 150
Flange type	Floating (EN / ANSI drilling)
Size range	DN32 – DN600
Working pressure	Up to 25 bar
Burst pressure	3 × working pressure
Temperature	-30 °C to +150 °C
Vacuum	To -2 bar (with vacuum ring)

EN 1092-1 / ANSI B16.5EN 10204 3.13× BURST SAFETY FACTOR

Movements absorbed

Axial compression

Axial extension

Lateral deflection

Angular deflection

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Size & Order Codes

Nominal size (DN)

Flange standard

64 of 64 codes

DN	Length	Rubber material	Flange standard	Flange material	Product code
32	178 mm	EPDM	PN10	S235 CS	T282_10000000-00
32	178 mm	EPDM	PN16	S235 CS	T282_10000001-00
32	178 mm	EPDM	PN25	S235 CS	T282_10000002-00
32	178 mm	EPDM	Class 150	S235 CS	T282_10000003-00
40	178 mm	EPDM	PN10	S235 CS	T282_10000004-00
40	178 mm	EPDM	PN16	S235 CS	T282_10000005-00
40	178 mm	EPDM	PN25	S235 CS	T282_10000006-00
40	178 mm	EPDM	Class 150	S235 CS	T282_10000007-00
50	178 mm	EPDM	PN10	S235 CS	T282_10000008-00
50	178 mm	EPDM	PN16	S235 CS	T282_10000009-00
50	178 mm	EPDM	PN25	S235 CS	T282_10000010-00
50	178 mm	EPDM	Class 150	S235 CS	T282_10000011-00
65	178 mm	EPDM	PN10	S235 CS	T282_10000012-00
65	178 mm	EPDM	PN16	S235 CS	T282_10000013-00
65	178 mm	EPDM	PN25	S235 CS	T282_10000014-00
65	178 mm	EPDM	Class 150	S235 CS	T282_10000015-00
80	178 mm	EPDM	PN10	S235 CS	T282_10000016-00
80	178 mm	EPDM	PN16	S235 CS	T282_10000017-00
80	178 mm	EPDM	PN25	S235 CS	T282_10000018-00
80	178 mm	EPDM	Class 150	S235 CS	T282_10000019-00
100	228 mm	EPDM	PN10	S235 CS	T282_10000020-00
100	228 mm	EPDM	PN16	S235 CS	T282_10000021-00
100	228 mm	EPDM	PN25	S235 CS	T282_10000022-00
100	228 mm	EPDM	Class 150	S235 CS	T282_10000023-00
125	228 mm	EPDM	PN10	S235 CS	T282_10000024-00
125	228 mm	EPDM	PN16	S235 CS	T282_10000025-00
125	228 mm	EPDM	PN25	S235 CS	T282_10000026-00
125	228 mm	EPDM	Class 150	S235 CS	T282_10000027-00
150	228 mm	EPDM	PN10	S235 CS	T282_10000028-00
150	228 mm	EPDM	PN16	S235 CS	T282_10000029-00
150	228 mm	EPDM	PN25	S235 CS	T282_10000030-00
150	228 mm	EPDM	Class 150	S235 CS	T282_10000031-00
200	330 mm	EPDM	PN10	S235 CS	T282_10000032-00
200	330 mm	EPDM	PN16	S235 CS	T282_10000033-00
200	330 mm	EPDM	PN25	S235 CS	T282_10000034-00
200	330 mm	EPDM	Class 150	S235 CS	T282_10000035-00
250	330 mm	EPDM	PN10	S235 CS	T282_10000036-00
250	330 mm	EPDM	PN16	S235 CS	T282_10000037-00
250	330 mm	EPDM	PN25	S235 CS	T282_10000038-00
250	330 mm	EPDM	Class 150	S235 CS	T282_10000039-00
300	330 mm	EPDM	PN10	S235 CS	T282_10000040-00
300	330 mm	EPDM	PN16	S235 CS	T282_10000041-00
300	330 mm	EPDM	PN25	S235 CS	T282_10000042-00
300	330 mm	EPDM	Class 150	S235 CS	T282_10000043-00
350	350 mm	EPDM	PN10	S235 CS	T282_10000044-00
350	350 mm	EPDM	PN16	S235 CS	T282_10000045-00
350	350 mm	EPDM	PN25	S235 CS	T282_10000046-00
350	350 mm	EPDM	Class 150	S235 CS	T282_10000047-00
400	350 mm	EPDM	PN10	S235 CS	T282_10000048-00
400	350 mm	EPDM	PN16	S235 CS	T282_10000049-00
400	350 mm	EPDM	PN25	S235 CS	T282_10000050-00
400	350 mm	EPDM	Class 150	S235 CS	T282_10000051-00
450	350 mm	EPDM	PN10	S235 CS	T282_10000052-00
450	350 mm	EPDM	PN16	S235 CS	T282_10000053-00
450	350 mm	EPDM	PN25	S235 CS	T282_10000054-00
450	350 mm	EPDM	Class 150	S235 CS	T282_10000055-00
500	350 mm	EPDM	PN10	S235 CS	T282_10000056-00
500	350 mm	EPDM	PN16	S235 CS	T282_10000057-00
500	350 mm	EPDM	PN25	S235 CS	T282_10000058-00
500	350 mm	EPDM	Class 150	S235 CS	T282_10000059-00
600	330 mm	EPDM	PN10	S235 CS	T282_10000060-00
600	330 mm	EPDM	PN16	S235 CS	T282_10000061-00
600	330 mm	EPDM	PN25	S235 CS	T282_10000062-00
600	330 mm	EPDM	Class 150	S235 CS	T282_10000063-00

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Selection Guide

T282Standard — EPDM / NBR

Twin-arch bellows with floating flanges. The default for pumps, HVAC and process lines needing large movement take-up.

Best forHVAC · pump rooms · process

T282-CWith control rods

Tie rods restrain pressure thrust and over-extension where anchoring is limited.

Best forUnanchored / rooftop piping

T282-XCompound selection

EPDM for water and weather, NBR for oils and fuels, CR / NR for abrasion and outdoor duty.

Best forMedia-matched service

All units feature a 3× burst pressure safety factor for added reliability.

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Datasheet & Drawings

Double sphere specifications and face-to-face lengths on one page, plus the technical drawing. A certified approval drawing follows with your quotation.

Download datasheet All technical drawings

EN 10204 3.1 material certificates are supplied with your shipment.

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Frequently Asked Questions

When should I choose a double sphere instead of a single sphere?

Choose a double sphere when the movement or misalignment is larger than a single arch can absorb, or when you want even softer vibration isolation. It offers roughly twice the deflection of a single sphere of the same size.

How much more movement does a double sphere absorb?

Broadly around double the axial, lateral and angular capacity of a single sphere, because two arches share the work. Exact figures depend on size and elastomer and are confirmed for each duty.

Can it correct pipe misalignment?

Yes. The twin-arch body is well suited to bridging pipe ends that are slightly offset or angled, without imposing high loads on the flanges.

Does a double sphere need a control unit?

Often, yes. Because it is so flexible, a tie-rod control unit is commonly fitted on unanchored lines to carry pressure thrust and cap the joint's extension and compression.

Which elastomer options are available?

EPDM for water and HVAC, NBR for oils and fuels, NR for abrasion, and chlorobutyl or CR for chemicals, with silicone or FKM for special duty — selected from your medium and temperature.

Is the bore restricted by the two arches?

No. The spherical arches keep a smooth, open bore, so pressure drop stays low even with the extra flexibility.

Engineered to order. Delivered worldwide.

Send your duty conditions — size, pressure, temperature, medium and connections — and our engineers return a drawing, material selection and lead time.

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