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specialist knowledge.  

specialist products.

​delivered fast.

flexible ISOFLOW pre-insulated pipe:

/HEATING

QUADRUPLE

HOT WATER (DHW) WRAS

POTABLE COLD WRAS

 
FITTINGS


ANCILLARIES

NEW FEATURE ​- scan​ to request a quick quote:

How flexible is ISOFLOW pre-insulated pipe?

Very.  Take our super insulated 32mm double in a 160mm duct - it has a 500mm bend radius that's easy to achieve with one pair of hands.  Designed specifically to reduce bend radius meaning the pipe is simply curved out of the ground - no underground elbows required.  Refer to tech specs for the bend radius for your specific product.

Does the system comply?

Yes.  ISOFLOW pipe has been designed in accordance with BSEN 15632 1,3, cold and DHW potable pipe is also WRAS approved

What's the lead time?

Most sizes 25mm to 63mm are available for next day delivery if ordered before midday.  Above 63mm approx. one week, please call to check the specific product you require.

How good is the heat retention?

Excellent.  Take our 32mm double in a 160mm duct - only 7.7watts per metre heat loss at typical ASHP flow/return temps of 45C/35C.

Do the fittings require special tools?

No.  Our clamp type fittings use a stainless steel bolt - a spanner or socket set is all you need.

FAQs

ORDER ONLINE           CONTACT/QUOTE REQUEST FORM
Can we buy direct?

Yes.  Purchase via the website or give us a call to discuss your requirements and we will send you a quotation.

Pre-Insulated Pipe Systems UK | Flowsupplies

Flowsupplies are specialist suppliers of pre-insulated pipe systems for the efficient distribution of heating, hot and cold water in underground pipe networks. Our solutions are designed to reduce heat loss, improve energy efficiency, and simplify installation through flexible pipe systems and a comprehensive product range.

Key Benefits of Isoflow Pre-Insulated Pipe Systems:

  • Flexible pre-insulated pipe for easier installation and fewer underground joints

  • Next day delivery on cut-to-length pre-insulated pipe from stock

  • Wide range of pipes, fittings and ancillary components for complete system compatibility

  • Durable, high-performance systems compliant with BS EN 15632 standards

  • Advanced manufacturing ensures consistent product quality and reliability

Whether you’re an installer, M&E contractor, housing developer or construction company, Flowsupplies provides reliable pre-insulated pipe solutions backed by expert advice and fast delivery across the UK.