Glowworm 24CI Expansion Vessel 5 Litre – Refurbished | MPN 2000801894 (Was S1005000)

A boiler's pressure stability hinges on components that rarely get noticed — until something goes wrong. The Glowworm 24CI Expansion Vessel (MPN 2000801894, previously S1005000) is one of those quiet essentials, working continuously to absorb the pressure changes that occur as water heats and expands within your sealed circuit. By managing those fluctuations effectively, it protects your boiler's critical internal components from the kind of ongoing stress that leads to leaks, breakdowns, and costly repairs.

With a 5-litre capacity, this vessel is engineered to fit seamlessly into Glowworm 24CI boilers and is also compatible across the wider Glowworm CI and SI boiler ranges, offering a precise like-for-like replacement that restores pressure stability without any complications.

This is a professionally refurbished genuine Glowworm component, tested to meet quality standards before dispatch — delivering reliable performance at a fraction of the cost of a new part.

• Glowworm Expansion Vessel 2000801894 Was S1005000 5L
• Part Number: 2000801894 (Was S1005000)
• Condition: Refurbished
• Comes with 12-months warranty
• Compatible with Glowworm CI and SI boiler ranges
  
  

  GC Number:

  Model	GC Number
  Glowworm 24CI	47-047-19
  Glowworm 18SI	41-047-61
  GW 23C	47-047-18

  
  

  Reliable Protection. Sensible Savings.

  Every unit is tested to confirm it meets the required quality and performance standards before being cleared for dispatch — giving you a dependable boiler spare part that absorbs excess pressure, prevents damage, and reduces the risk of unexpected breakdowns. It's a smart, cost-effective way to keep your heating system in top condition, backed by a full 12-month warranty.
  
  

  Delivery & Returns

  Orders placed before 3:00 PM are dispatched the same working day via reliable couriers, with both standard and next working day delivery options available at checkout. Returns accepted within 30 days, provided the part is unused and in its original packaging.
  
  Note: Please confirm that MPN 2000801894 (Was S1005000) matches your existing part before placing your order. Installation must always be carried out by a Gas Safe registered engineer to ensure safety compliance and warranty validity.