Roca — Bottom Entry Fill Valve — 1/2″ BSP — Brass Outlet — A822010500D
Genuine Roca bottom-entry inlet/fill valve with 1/2″ BSP connection and brass outlet. Roca have updated the design — the new style shown in Image 2 is the version supplied (supersedes earlier visuals / packaging art).
Image 2: Updated OEM design — this is the exact version we supply. Older style shown elsewhere is for reference only.
Key features
- Bottom entry inlet valve for Roca cisterns.
- 1/2″ BSP inlet thread (UK standard).
- Brass outlet for durability and reliable sealing.
- OEM part code: A822010500D (supersedes earlier A822010500 imagery).
- Updated Roca design supplied (see Image 2).
- Smooth, quiet refill when correctly installed and adjusted.
How to confirm it’s the right one
| Check | What you should see |
|---|---|
| Entry position | Bottom entry through the cistern base (not side). |
| Inlet thread | 1/2″ BSP (male) connection to the supply. |
| Outlet/shank | Brass outlet section; matches Image 2 updated style. |
| Float/height | Adequate clearance for float movement inside your cistern. |
Tip: If your inlet comes through the side wall, you need a side entry fill valve instead.
Specification
- Brand: Roca
- Type: Bottom entry fill (inlet) valve
- Inlet thread: 1/2″ BSP
- Outlet: Brass
- OEM code: A822010500D
- FixTheBog code: FTB12723
- Adjustable refill level: Yes (set float height to suit cistern)
- Contents: 1 × fill valve (fixings/washer as pictured)
What fails & typical symptoms
- Worn diaphragm or seal → slow fill or continuous trickle.
- Sticking float → overfilling or intermittent running.
- Debris from supply → valve won’t shut off cleanly.
Quick check: isolate water, pop the lid, lift the float by hand — the flow should stop cleanly. If not, the valve is due for replacement or service.
Fitting notes (at your own discretion)
- Isolate water; flush to lower the level.
- Disconnect supply pipe; undo backnut; remove old valve.
- Clean the hole and mating surfaces; fit new washer(s) as supplied.
- Insert new valve; tighten backnut hand-tight then nip up. Do not over-tighten.
- Reconnect supply; open isolation valve; check for leaks.
- Adjust float height so the water line is below the overflow and to the manufacturer’s mark.
Work should be undertaken by a competent person. If unsure, consult a plumber.
Questions & Answers
Is the new design definitely what I’ll receive?
Yes — Roca have updated the style and the updated design shown in Image 2 is the version supplied. Earlier imagery may still appear on some packaging or reference photos.
How do I know if I need bottom entry or side entry?
Check where the feed pipe enters the cistern. Through the base = bottom entry (this item). Through the side wall = side entry (different product).
Will this stop my toilet constantly filling?
Usually, yes — a tired valve or diaphragm causes continual trickling. Replacing the valve and setting the float height correctly typically resolves it.
What thread does the supply pipe need?
This valve uses a 1/2″ BSP inlet. Most UK flexible hoses/isolation valves match this standard.