Description
Worcester 87154072960 (8716122434) Expansion Vessel 7L | Fits Greenstar, Camray & Danesmoor Boilers
The expansion vessel is an essential boiler component that absorbs excess pressure within the heating system as water expands during heating.
If your boiler shows pressure drops or fluctuations, the vessel may be waterlogged or faulty — replacing it with a Worcester 8716122434 ensures safe operation and longevity.
This part replaces Worcester 87154072960 and fits a wide range of Greenstar CDI, Classic, Camray, and Danesmoor boilers.
Compatible Boiler Models (with GC Numbers):
 Greenstar CDI System & Combi Range:
Greenstar 30 CDI System – GC No. 41-311-93
Greenstar Combi 25 CDI – GC No. 47-311-92
Greenstar Combi 27 CDI HE – GC No. 47-406-12
Greenstar Combi 27 CDI HE LPG – GC No. 47-406-13
Greenstar Combi 30 CDI – GC No. 47-311-93
Greenstar Combi 30 CDI HE – GC No. 47-406-14
Greenstar Combi 30 CDI HE LPG – GC No. 47-406-15
Greenstar Combi 35 CDI – GC No. 47-311-94
Greenstar Combi 37 CDI HE – GC No. 47-406-08
Greenstar Combi 37 CDI HE LPG – GC No. 47-406-09
Greenstar Combi 40 CDI – GC No. 47-311-95
 Greenstar CDI Classic & Classic ERP Range:
Greenstar 29 CDI Classic – GC No. 47-406-34 (7738100216)
Greenstar 29 CDI Classic LPG – GC No. 47-406-35
Greenstar 34 CDI Classic – GC No. 47-406-36
Greenstar 34 CDI Classic LPG – GC No. 47-406-37
Greenstar 38 CDI Classic – GC No. 47-406-38
Greenstar 38 CDI Classic LPG – GC No. 47-406-39
Greenstar Combi 42 CDI HE (Classic) – GC No. 47-406-10
Greenstar Combi 42 CDI HE (Classic) LPG – GC No. 47-406-11
Greenstar 29 CDI Classic ErP – GC No. 47-406-65 (7738100248)
Greenstar 29 CDI Classic ErP LPG – GC No. 47-406-66
Greenstar 30 CDI Classic System ErP – GC No. 41-406-37 (7738100244)
Greenstar 30 CDI Classic System ErP LPG – GC No. 41-406-38 (7738100233)
Greenstar 34 CDI Classic ErP – GC No. 47-406-67 (7738100250)
Greenstar 34 CDI Classic ErP LPG – GC No. 47-406-68
Greenstar 35 CDI Classic System ErP – GC No. 41-406-39 (7738100236)
Greenstar 35 CDI Classic System ErP LPG – GC No. 41-406-40 (7738100237)
Greenstar 38 CDI Classic ErP – GC No. 47-406-69 (7738100252)
Greenstar 38 CDI Classic ErP LPG – GC No. 47-406-70
Greenstar 42 CDI Classic ErP – GC No. 47-406-71 (7738100246)
Greenstar 42 CDI Classic ErP LPG – GC No. 47-406-72
Important Information Before Ordering
Before placing your order, please ensure that the part matches the Manufacturer Part Number listed above.
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Pricing Details:
All prices listed are inclusive of VAT.
 Q&A:
Q1: What’s the difference between 87154072960 and 8716122434?
A: 8716122434 is the newer replacement for the discontinued 87154072960, featuring improved reliability and design.
Q2: What does the expansion vessel do?
A: It absorbs expanding water pressure within the heating system to prevent pressure spikes and leaks.
Q3: How do I know if my expansion vessel is faulty?
A: Common signs include frequent pressure loss, water discharge from the relief valve, or boiler lockouts.
Q4: Can I replace the vessel myself?
A: No — this part should be fitted by a qualified Gas Safe or OFTEC engineer for safety and warranty compliance.
Q5: Is this an internal or external expansion vessel?
A: This is an internal expansion vessel (7L) suitable for Worcester Greenstar CDI and similar models.










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