Ravenheat CSI 120 Low NOx Expansion Vessel 8 Litre – Refurbished | MPN 0004VAS11011/0

Pressure stability is the backbone of a safe and long-lasting heating system — and when that stability is compromised, the effects ripple through every component in your boiler. The Ravenheat CSI 120 Low NOx Expansion Vessel (MPN 0004VAS11011/0) is designed to prevent exactly that. As water heats and expands within your sealed circuit, this vessel absorbs the resulting pressure changes quietly and continuously — shielding your boiler's internal components from the kind of stress that leads to premature wear, leaks, and costly repairs.

With an 8-litre capacity and a direct fit for the Ravenheat CSI 120 Low NOx boiler, this is a precise like-for-like replacement that restores your system's pressure management without any modifications or complications — simply fitted, immediately effective.

This is a professionally refurbished genuine Ravenheat component, rigorously tested and verified by our technicians to meet full functionality standards before dispatch. Same performance as new. Smarter price.

• Ravenheat CSI 120 Low NOx Expansion vessel
• Part Number: 0004VAS11011/0
• Condition: Refurbished
• Comes with 12-months warranty
• Compatible with a wide range of Ravenheat boilers
  
  

  GC Number: 

  Model	GC Number
  CSI 120 Low NOx NG/LPG (up to serial no. 16007132)	47-581-37
  HE 150N / HE 150NT	—

  
  

  Delivery & Returns

  Orders placed before 3:00 PM are dispatched the same working day, with both standard and next working day delivery options available at checkout. Returns accepted within 30 days, provided the item is unused and in its original packaging.
  
  Note: Please confirm that MPN 0004VAS11011/0 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.