EMFLEX EPDM (

Ethylene Propylene Diene Monomer)

rubber flexible connectors are comprised of a synthetic

rubber membrane reinforced with nylon. The collars are

wire reinforced and the unit is complete with carbon

steel flanges. They are capable of absorbing movement

in several directions; axial compression, axial elongation

and lateral deflection. A small amount of angula

movement may also be allowed. They are normally

installed in the pipework to isolate various items of plant

which produce noise and vibration. These flexible

connectors effectively dampen the transmission of sound

and vibration from plant items in building services

installations.

Type EE Untied

EPDM rubber membrane reinforced with a nylon textile

cord and fitted with untied (circular) zinc plated carbon

steel flanges. Suitable for use on hot water and chilled

water under 4 bar unless the pipework is secured.

Design Consideration:

Rubber flexible connectors are subjected to the same

internal pressure force as metal expansion joints and that

the same force is equal to the internal pressure multiplied

by the maximum internal area. This force causes the

connector to lengthen and tied units are recommended

where the working pressure exceeds 4 bar, unless the

pipework is secured to restrict movement.

Tie rods are fitted through oval flanges and to isolate the

tie-rods from the special neoprene top hat washers are

used to prevent any metal to metal contact whatsoever,

effectively preventing noise transmission.

After Installation of TIED UNITS the tie-rod nuts should be

checked to have 1mm clearance over the steel washers.

When using with items of plant mounted on vibration

isolators, such as springs or inertia bases, then TIED units

must be installed.

Working Pressure:

4 bar (400kPA) for untied units, unless pipe is secured.

10 bar (1000kPA) for tied units with top hat washers.

16 bar (1600kPA) PLEASE CONTACT OUR OFFICES.

Test Pressure: 1.5 x Working Pressure

Working Temperature: -10°C to 95°C

Key Features:

 Fully traceable and has the date of manufacture,

nominal diameter, manufacturer, and type permanently

moulded into the membrane.

 Noise and vibration reduction capabilities.

 All Tied units are fitted with noise absorbing top hat

washers.

Untied & Tied Unit

Untied Units Only Untied & Tied Unit

Nominal Bore

Installed Overall

Length

Axial Com

ression

Axial Elon

ation Lateral Deflection

mm mm mm mm mm

25 130 12 9 12

32 130 12 9 12

40 130 12 9 12

50 130 12 9 12

65 130 12 9 12

80 130 12 9 12

100 130 14 9 12

125 130 14 9 12

150 130 14 9 12

200 130 14 9 12

250 130 14 9 12

EPDM rubber membrane reinforced with a nylon textile

cord and fitted with tied (oval) zinc plated carbon steel

flanges complete with isolating tie bars. Suitable for use on

hot water and chilled water under 10 bar.

Type EE Tied

EMFLEX

Distributor:

Interflex Hose & Bellows Ltd. • www.interflex.co.uk

Ludlow Eco Park • Ludlow • Shropshire • SY8 1FF • UK

Tel.: +44 (0)1584 878500 • Email: enquiries@interflex.co.uk

EPDM Rubber Bellows Flexible Connectors (130 mm Long)