
The Safety Relief Valve is one of the most important protection devices in any sealed heating system. Its role is simple but essential: when system pressure rises above safe operating limits, the valve opens automatically to discharge excess pressure, preventing damage to the boiler, pipework, and connected components. The Alpha 1.028561 3‑bar valve is engineered with precise spring calibration and robust internal mechanisms to ensure consistent, repeatable operation. Its durable brass body resists corrosion and thermal stress, while the high‑integrity sealing components maintain leak‑free performance throughout the valve’s service life. This valve is designed specifically for Alpha boilers requiring a 3‑bar pressure safety release, ensuring a perfect fit and dependable performance during both routine operation and emergency pressure events.
Features:
3‑bar calibrated release pressure - Opens automatically when system pressure exceeds safe limits.
High‑strength brass body - Provides excellent durability and corrosion resistance.
Precision‑engineered spring mechanism - Ensures accurate and repeatable pressure release.
Thermal‑resistant seals - Maintain leak‑free performance under continuous temperature cycling.
OEM‑specific connection design - Guarantees correct fitment and reliable integration with Alpha boiler models.
Alpha 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 | 1.028561 |
|---|---|
| Product Code | ALPHASPAREPART03 |
| Part Origin | Genuine |
| Part or Accessory? | Part |
| Brand | Alpha |
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.
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.
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.
The Safety Relief Valve is one of the most important protection devices in any sealed heating system. Its role is simple but essential: when system pressure rises above safe operating limits, the valve opens automatically to discharge excess pressure, preventing damage to the boiler, pipework, and connected components. The Alpha 1.028561 3‑bar valve is engineered with precise spring calibration and robust internal mechanisms to ensure consistent, repeatable operation. Its durable brass body resists corrosion and thermal stress, while the high‑integrity sealing components maintain leak‑free performance throughout the valve’s service life. This valve is designed specifically for Alpha boilers requiring a 3‑bar pressure safety release, ensuring a perfect fit and dependable performance during both routine operation and emergency pressure events.
Features:
3‑bar calibrated release pressure - Opens automatically when system pressure exceeds safe limits.
High‑strength brass body - Provides excellent durability and corrosion resistance.
Precision‑engineered spring mechanism - Ensures accurate and repeatable pressure release.
Thermal‑resistant seals - Maintain leak‑free performance under continuous temperature cycling.
OEM‑specific connection design - Guarantees correct fitment and reliable integration with Alpha boiler models.
Alpha 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 | 1.028561 |
|---|---|
| Product Code | ALPHASPAREPART03 |
| Part Origin | Genuine |
| Part or Accessory? | Part |
| Brand | Alpha |
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.
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.
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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