
Alpha CD18R Gas Valve – Refurbished | Part No. 1.023673
SKU: GAS-1259-A-BC
Erratic ignition, gas pressure faults, or repeated lockout in an Alpha CD series boiler are common symptoms of a deteriorating gas valve. The gas valve regulates and controls gas delivery to the burner — once it fails, safe and consistent combustion cannot be maintained. The Alpha CD18R Gas Valve (Part No. 1.023673) is the pre-owned direct replacement for the full Alpha CD R, S, C, and X ranges, restoring precise gas regulation and reliable heating performance.
This pre-owned unit is sourced from a fully functioning boiler and quality-checked by our experienced engineering team before dispatch. Minor cosmetic marks may be present, but all functional performance is confirmed and tested. Supplied with a full 6-month warranty.
Compatible Boiler Models
| Model | GC No. |
|---|---|
| CD 12S | 41-532-16 |
| CD 20S | 41-532-18 |
| CD 28S | 41-532-20 |
| CD13R | 41-532-05 |
| CD18R | 41-532-03 |
| CD24R | 41-532-04 |
| CD25C | 47-532-31 |
| CD25X | 47-532-39 |
| CD28C | 47-532-33 |
| CD28X | 47-532-37 |
| CD35C | 47-532-35 |
Quality-Checked. Reliable. 6-Month Warranty.
Every pre-owned Alpha gas valve we supply is quality-checked by our experienced engineering team, confirming correct gas regulation and safe combustion performance before dispatch. Supplied with a full 6-month warranty.
Delivery & Returns
Orders placed before 1:00 PM (Mon–Fri) are dispatched the same working day. Standard and next-day delivery available at checkout. Returns accepted within 30 days in original unused condition.
Note: Please confirm that part number 1.023673 matches your existing gas valve and check your boiler's GC number before ordering. Installation must be carried out by a Gas Safe registered engineer to ensure safety compliance and warranty validity.
| SKU | GAS-1259-A-BC |
| Weight | 0.9 kg |
Alpha
Free Delivery
Free UK delivery on orders over £75. Same-day dispatch on orders placed before 4pm on working days.
Returns
We offer a 30-day returns policy. Items must be returned in original condition and packaging. Contact our team to arrange a return.



