Ultraflow indirect pre-plumbed unvented cylinders come factory-fitted with all necessary unvented controls and valves, significantly reducing installation time. Available in configurations for system boilers and heat only (open-vented) boilers. Manufactured from duplex stainless steel with 50mm insulation. 25 year cylinder warranty and 2 year parts warranty.

* 400L & 500L — price on application, please contact our sales team. All prices are list price ex VAT.
* 400L & 500L — price on application, please contact our sales team. All prices are list price ex VAT.
Our team is available Mon–Fri 08:00–17:00 at both Enfield and Rushden branches