The Burlington SP77 is a quarter turn on/off flow cartridge for Burlington T12-QT basin mixer taps. This is the hot side cartridge and is used to start and stop the water flow through the tap.
A worn flow cartridge can cause dripping from the spout when the tap is turned off, a stiff action, or difficulty fully shutting the water off. Replacing the cartridge restores correct quarter turn operation and proper shut-off.
| Close direction | anti-clockwise close, clockwise open. |
|---|---|
| Total length including bottom seal | 77mm. |
| Spindle length | 36mm. |
| Diameter at widest point | 23.7mm. |
| Top spline diameter | 7.6mm. |
| Top spline teeth / notches | 20. |
| Lower thread diameter | 20.5mm, 1/2" BSP. |
| Barrel diameter below lower thread | 23.8mm. |
| Upper thread diameter | 23.7mm. |
| Bottom seal colour | red. |
| On applicable pop-up waste versions | Burlington SP974 Plug of Pop Up Waste. |
|---|---|
| On applicable pop-up waste versions | Burlington SP807 Pop Up Basin Waste. |
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