How it connects
The contoured curved flange of the saddle fits against the outer wall of a round flue pipe over a cut opening, secured using metal straps or sheet-metal screws. The cylindrical collar receives the barometric damper gate sleeve.
Male and female halves
Neutral saddle mount; the curved profile mates flush against the round exterior of a flue pipe, while the circular sleeve receives or sleeves over the draft control gate housing.
Usually connects to
- round flue pipe
- smoke pipe
- chimney vent connector
- barometric draft regulator
Common sizes
- Typically 4" to 9" diameter collar for draft gates, contoured to fit 5" through 10" diameter flue pipes (commonly 6" collar for 5"-7" pipes).
Where it is used
HVAC ventingoil and coal heating systemsresidential and commercial chimneysboiler breeching
Variations
- curved saddle with strap clamps
- crimped flue tee collar
- screw-fastened saddle tap
How to recognise it
Recognised by a curved sheet-metal profile shaped to seat against round cylindrical smoke pipe, featuring a circular takeoff sleeve (often slotted or sized to hold a barometric damper ring) and mounting straps or screw perforations.
Often confused with
| Confused with | How to tell them apart |
|---|---|
| duct saddle tap | Duct saddle taps are designed for air distribution HVAC ductwork rather than high-temperature flue gas exhaust or barometric draft control gates. |
| standard flue tee fitting | A standard flue tee is an inline cylindrical pipe section with a fixed branch, whereas a saddle collar wraps onto existing pipe over an auxiliary cutout. |
Also called
barometric draft control collarflue saddle collardraft regulator mounting collarsaddle tap collar
Good to know
Commonly supplied with Field Controls Type RC or MG1 barometric draft controls to enable mounting on existing round flue or smoke pipes without disassembling the chimney connector run.
Related connections
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