Description
Worcester 24CDi-BF/NG Diaphragm Replacement Kit 87161405530
The Worcester 24CDi-BF/NG Diaphragm Replacement Kit 87161405530 restores proper water flow and pressure control inside your boiler. This brand-new diaphragm kit helps maintain consistent heating and hot water performance by ensuring smooth operation of the diverter valve. Designed for Worcester 24CDi-BF and NG boilers, it provides a reliable and long-lasting solution for common pressure or flow-related issues.
Compatible Boilers
Worcester 24CDi Series
24CDi-BF/NG (GC No. 47-311-29)
24CDi-Of/LPG (GC No. 47-311-33)
24CDi-Of/NG (GC No. 47-311-32)
24CDi-RSF/LPG (GC No. 47-311-31)
24CDi-RSF/NG (GC No. 47-311-30)
Worcester 26CDi and 28CDi Series
26CDi Xtra LPG (GC No. 47-311-42)
26CDi Xtra NG (GC No. 47-311-41)
28CDi-RSF/LPG (GC No. 47-311-35)
28CDi-RSF/NG (GC No. 47-311-34)
Worcester 35CDi Series
35CDi II (GC No. 47-311-58)
Why Choose This Product?
This Worcester Diaphragm Replacement Kit provides an effective and affordable solution for repairing boiler water pressure and flow issues. It helps maintain proper diverter valve function, ensuring balanced heating and hot water output. Built to manufacturer standards, this kit offers long-lasting performance and easy installation for professional engineers. It’s a smart choice for maintaining your Worcester boiler’s reliability, efficiency, and comfort levels in your home.
Delivery and Return
All orders placed before 1 PM are dispatched the same working day. Customers can choose between standard or next-day courier delivery at checkout. Items may be returned within 30 days if unused and in their original condition. Always ensure installation or repair is carried out by a Gas Safe registered engineer to maintain safe and efficient boiler operation.
Frequently Asked Questions (FAQs)
1. What does the Worcester 24CDi-BF/NG Diaphragm Replacement Kit do?
The diaphragm replacement kit controls water flow inside the boiler’s diverter valve. It directs hot water between the heating system and taps, ensuring steady pressure and temperature for reliable performance.
2. Which Worcester boilers are compatible with this diaphragm kit?
This diaphragm replacement kit (part number 87161405530) fits Worcester 24CDi, 26CDi Xtra, 28CDi, and 35CDi II boilers. You can confirm compatibility by checking the GC number on your boiler’s data plate and comparing it with the list in the product description.
3. Can this diaphragm kit fix low water pressure or poor hot water flow?
Yes. Replacing a worn diaphragm often resolves low water pressure, inconsistent temperatures, and heating issues caused by diverter valve failure.
4. Is this diaphragm kit new or refurbished?
This part is brand new and supplied in original condition. It has been tested to ensure durability, performance, and compatibility with all supported Worcester boiler models.
5. Does the diaphragm kit come with a warranty?
Yes. The Worcester 24CDi-BF/NG Diaphragm Replacement Kit 87161405530 comes with a 12-month warranty covering manufacturing defects and performance issues under normal use.







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