RM 1200 x 450 Indirect Vented Cylinder (86775)

Hello rod8, All cylinders are standard for Pumped systems only. If a cylinder is required to work on a heat source such as solid fuel/gravity a special cylinder with gravity coil is required. This type of cylinder would not be available from Screwfix and would need to be ordered from a plumbers merchant. Thank you for using Q&A SW

Hello, This has one entry point for the flow from the boiler and one for the return to the boiler. Thank you for using Q&A KD

Hello bessy, Looking at the cylinder- Up from base on left 100mm Cold Feed - Female Up from base on left 2/3 rds up Secondary return - Female Up from the base on the right 100mm Lower Primary Coil Connection - Male Up from the base on the right 400mm Upper Primary Coil Connection - Male On top Hot Water Take-off - Female On top Immersion Heater Boss 2 ¼” Standard Thank you for using Q and A, EC.