5 inch Cast Iron Flue Pipe Damper - fits into 120 to 125mm internal dia Flue Pipe

Inc. 20% VAT
£12.49 exc. VAT
499 in stock, immediate despatch
450 g
Product info

Purchase the size of damper you need to fit your flue pipe. These dampers fit to single wall flue pipe (vitreous or stainless). They cannot be fitted into twin wall insulated pipe

For example, if you have a 5" / 125mm diameter pipe, please select a 5" damper. Do note however, that the damper will be SMALLER than the internal diameter of the pipe, to allow it freely spin and for essential drawing away of gasses from the stove.

These are in-line dampers and fit INSIDE your pipe and not in the stove collar. Fitting instructions as below :

Damper Fitting Instructions

Prior to installing a damper, ensure that it's location will allow it to spin freely once installed. Ensure that the damper will be in a convenient location without obstruction from the top of the stove or cleaning access doors in the flue pipe for example. During installation, safety goggles / glasses should be worn at all times.

The following steps should ensure a simple installation :

1. Remove spindle from the main body. This is sometimes not as easy as it would appear, as the spring needs sufficient pressure exerted to enable satisfactory working when installed. A good method is to hold the damper by the main body with the pointed end of the spindle facing upwards, then carefully apply pressure downwards onto a scrap piece of wood or similar. When the main body is lowered down the shaft, twist the spindle to release the two main parts.

2. When free and decision has been made as to the location of the damper, a 6.5mm (1/4" approx) hole must be drilled at opposite parameters of the flue pipe. Drill very carefully as a snug fit is best. Extreme care should be exercised when drilling - especially into vitreous enamelled flue pipe. Masking tape may be applied to limit chipping. If the pipe has a cleaning access door, the holes must be below the access door !

3. Once the holes are drilled, the main body of the damper needs careful sliding into the flue pipe to the location of the holes. Whilst in situ, slide the centre of the spindle through the main body of damper, twisting where necessary to refit in it's original location through the main body.

4. Prior to installing the flue pipe with damper fitted, check that when the handle is horizontal, the damper also is (damper closed) and when vertical, that the damper also is (damper open)

Delivery & Returns

We endeavour to try and dispatch all orders placed before 12noon on the same working day.
Shipping options available to you will be shown at checkout.

Free shipping within the UK is available on small orders £25 and above by second class post and larger orders over £50 to mainland UK (Excluding Highlands and Islands) by courier.


1st Class post - UK, an average of 1 > 2 working days from dispatch
2nd Class post - UK, an average of 2 > 4 working days from dispatch
Economy Courier, to UK Highlands and Islands - an average of 3 > 5 working days from dispatch
Next Working Day Courier - next working day from dispatch (note - must order by 12 noon or confirm by phone)

Air Mail to Europe, an average of 7 > 14 days
Courier Parcels to Europe - average of 2 > 7 days
Air Mail to Rest of World, an average of 7 > 21 days (can be very variable depending on location) - 2kg maximum

Please note - Parcels to Rest of World over 2kg need to be manually packed, measured and weighed before shipping costs can be obtained.


Returns of unwanted items are only accepted if goods are in new, unused condition, in original packaging and fit for resale. Please return within 14 days of purchase. Shipping costs are not refundable. Statutory rights are not affected.

Customer Reviews (0)

Be the first to Write a Review for this item!

Customer reviews

Be the first to Write a Review for this item!