Size (mm) Installed Length Material Type Temperature Limits °C Part Number
32 130 Nylon Reinforced EPDM -10 – 90 DST/032/PN16T
40 130 Nylon Reinforced EPDM -10 – 90 DST/040/PN16T
50 130 Nylon Reinforced EPDM -10 – 90 DST/050/PN16T
65 130 Nylon Reinforced EPDM -10 – 90 DST/065/PN16T
80 130 Nylon Reinforced EPDM -10 – 90 DST/080/PN16T
100 130 Nylon Reinforced EPDM -10 – 90 DST/100/PN16T
125 130 Nylon Reinforced EPDM -10 – 90 DST/125/PN16T
150 130 Nylon Reinforced EPDM -10 – 90 DST/150/PN16T
200 130 Nylon Reinforced EPDM -10 – 90 DST/200/PN16T
250 130 Nylon Reinforced EPDM -10 – 90 DST/250/PN16T
300 On Request Nylon Reinforced EPDM -10 – 90 DST/300/PN16T
350 On Request Nylon Reinforced EPDM -10 – 90 DST/350/PN16T
400 On Request Nylon Reinforced EPDM -10 – 90 DST/400/PN16T


EXCO D-Flex Pump Flexibles are installed to reduce vibration and noise levels caused by “Plant” upon which they are fitted. These are suitable for use on systems carrying Chilled & Heating Water. Please see above for temperature & pressure limits.

EXCO D-Flex units are not suitable for use with Potable Water, Water with Oil additives, Compressed Air and Food Applications.

EXCO D-Flex units are manufactured from spherical moulded EPDM, which is a soft compound to offer a high isolation efficiency and high noise absorbing properties.

The D-Flex units tied type has specially designed anti tamper tie bars. This will only allow the units to be installed at their optimal length and avoid elongation of the unit. These units are rated to 10 bar working pressure and 15 bar test pressure.

The units are a full bore, thus removing pressure drop problems. The EPDM runner is nylon reinforced, and has a steel wire reinforced collar.

Flanges BZP coated carbon steel PN16.

D-Flex units have a 10 year design life when used on LTHW systems.

EXCO D-Flex units are stamped with Origin of Manufacture, Date of Manufacture, Batch Number and Size.

Please note no torsion forces should be applied to these units.

EXCO Ltd also supply DIN 4809 Approved Pump Flexibles. Please contact our sales office for further information.