Glow-Worm 20118178 Flow Switch | Genuine Replacement Spare Part
- SKU
- EDDGLOWWORM038
The Glow-Worm Flow Switch S801189 is a spare part designed for use in compatible Glow-Worm boilers as part of the central heating and/or hot water flow system. Functioning as a flow-activated sensor, this switch sits inline within the boiler’s water circuit and constantly monitors movement of water through the system.
Our Expert's Opinion
“A core safety component that prevents the boiler from firing unless the water flow is correct.”Glow-Worm 20038076 Flow Switch
The Glow-Worm Flow Switch S801189 is a spare part designed for use in compatible Glow-Worm boilers as part of the central heating and/or hot water flow system. Functioning as a flow-activated sensor, this switch sits inline within the boiler’s water circuit and constantly monitors the movement of water through the system. When the system demands heat or hot water and the pump activates, the flow switch detects this motion and sends a signal back to the boiler’s printed circuit board (PCB). Only once proper flow is confirmed will the PCB allow the ignition sequence to proceed, preventing the burner from firing under low-flow or dry conditions, which can otherwise lead to overheating, component stress, or premature failure. This makes the flow switch crucial both for system safety and consistent performance.
Glow-Worm provide a 1 year warranty on all spare parts. Electrical Deals Direct now sells a wide range of spare parts. If you cannot see the item you require on our website, please call 01934 253600 or email [email protected] for more information.
| MPN | 20118178 |
|---|---|
| Product Code | EDDGLOWWORM038 |
| Part Origin | Genuine |
| Part or Accessory? | Part |
| Brand | Glow-Worm |
Delivery Information -
Standard delivery for all orders over £150 ex-VAT are free of charge.
If we can speed this up, we will, but you can also select Express Delivery when you check out and get your purchase more quickly (usually the next working day, subject to a 1pm cut-off): there is an extra charge for this ranging from £5 to £29.99 depending on the products you are buying.
We partner with several of the best UK carriers (such as TNT, Royal Mail, DPD etc) depending on the type of product and the warehouse it is coming from, and also with some pallet companies for larger items. All of these operate during normal Monday – Friday working hours, and we expect all deliveries to arrive in 5 days. For more details checkout this page.
Gledhill Cylinders – Delivery Charge -
For all Gledhill Cylinders, a flat delivery charge of £33.00 (ex-VAT) applies, regardless of order value or delivery method. This will be added automatically at checkout.
Returns Information -
Having to return a product because it doesn’t fit, or is not what you wanted, is really annoying! To try and make sure this isn’t necessary we have lots of helpful advice on our site, and you should feel free to call our experts on the number above to check if you are in any doubt at all – we’re always happy to help.
But if you do, don’t worry, just contact us and we’ll get it sorted (note that for trade customers there may be a restocking fee). If you need it, we can usually arrange the carrier to pick it up.
For full details of our policy, check out the small print here.
Glow-Worm 20038076 Flow Switch
The Glow-Worm Flow Switch S801189 is a spare part designed for use in compatible Glow-Worm boilers as part of the central heating and/or hot water flow system. Functioning as a flow-activated sensor, this switch sits inline within the boiler’s water circuit and constantly monitors the movement of water through the system. When the system demands heat or hot water and the pump activates, the flow switch detects this motion and sends a signal back to the boiler’s printed circuit board (PCB). Only once proper flow is confirmed will the PCB allow the ignition sequence to proceed, preventing the burner from firing under low-flow or dry conditions, which can otherwise lead to overheating, component stress, or premature failure. This makes the flow switch crucial both for system safety and consistent performance.
Glow-Worm provide a 1 year warranty on all spare parts. Electrical Deals Direct now sells a wide range of spare parts. If you cannot see the item you require on our website, please call 01934 253600 or email [email protected] for more information.
| MPN | 20118178 |
|---|---|
| Product Code | EDDGLOWWORM038 |
| Part Origin | Genuine |
| Part or Accessory? | Part |
| Brand | Glow-Worm |
Delivery Information -
Standard delivery for all orders over £150 ex-VAT are free of charge.
If we can speed this up, we will, but you can also select Express Delivery when you check out and get your purchase more quickly (usually the next working day, subject to a 1pm cut-off): there is an extra charge for this ranging from £5 to £29.99 depending on the products you are buying.
We partner with several of the best UK carriers (such as TNT, Royal Mail, DPD etc) depending on the type of product and the warehouse it is coming from, and also with some pallet companies for larger items. All of these operate during normal Monday – Friday working hours, and we expect all deliveries to arrive in 5 days. For more details checkout this page.
Gledhill Cylinders – Delivery Charge -
For all Gledhill Cylinders, a flat delivery charge of £33.00 (ex-VAT) applies, regardless of order value or delivery method. This will be added automatically at checkout.
Returns Information -
Having to return a product because it doesn’t fit, or is not what you wanted, is really annoying! To try and make sure this isn’t necessary we have lots of helpful advice on our site, and you should feel free to call our experts on the number above to check if you are in any doubt at all – we’re always happy to help.
But if you do, don’t worry, just contact us and we’ll get it sorted (note that for trade customers there may be a restocking fee). If you need it, we can usually arrange the carrier to pick it up.
For full details of our policy, check out the small print here.
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