Description

• • Worcester 87186439890 safety valve replacement part

The Worcester Safety Valve PRV 87186439890 protects your boiler from excess pressure buildup and ensures reliable performance. This brand-new pressure relief valve maintains safe operating conditions by automatically releasing excess pressure, preventing system damage and leaks. Moreover, it ensures that your boiler runs efficiently, safely, and consistently. As a result, it helps extend the lifespan of your heating system while maintaining stable water pressure.

Compatible Boilers

Worcester Greenstar Compact Series

• 533 Compact (GC No. 47-406-58)

• 533 Compact ErP (GC No. 47-406-83)

• 535 Compact (GC No. 47-406-59)

• 535 Compact ErP (GC No. 47-406-84)

Worcester Greenstar CDI Compact and ERP Models

• Greenstar 28 CDI Compact (GC No. 47-406-44)

• Greenstar 28 CDI Compact LPG (GC No. 47-406-45)

• Greenstar 32 CDI Compact (GC No. 47-406-46)

• Greenstar 32 CDI Compact LPG (GC No. 47-406-47)

• Greenstar 36 CDI Compact (GC No. 47-406-48)

• Greenstar 36 CDI Compact LPG (GC No. 47-406-49)

• Greenstar 28 CDI Compact ErP (GC No. 47-406-77 / 7733600054)

• Greenstar 28 CDI Compact ErP LPG (GC No. 47-406-78 / 7733600057)

• Greenstar 32 CDI Compact ErP (GC No. 47-406-79 / 7733600055)

• Greenstar 32 CDI Compact ErP LPG (GC No. 47-406-80 / 7733600058)

• Greenstar 36 CDI Compact ErP (GC No. 47-406-81 / 7733600056)

• Greenstar 36 CDI Compact ErP LPG (GC No. 47-406-82 / 7733600059)

Worcester Greenstar i System Compact Series

• Greenstar 27 i System Compact (GC No. 41-406-13)

• Greenstar 27 i System Compact LPG (GC No. 41-406-14)

• Greenstar 30 i System Compact (GC No. 41-406-15)

• Greenstar 30 i System Compact LPG (GC No. 41-406-16)

• Greenstar 27 i System Compact ErP (GC No. 41-406-58 / 7733600060)

• Greenstar 27 i System Compact ErP LPG (GC No. 41-406-59 / 7733600061)

• Greenstar 30 i System Compact ErP (GC No. 41-406-60 / 7733600062)

• Greenstar 30 i System Compact ErP LPG (GC No. 41-406-61 / 7733600063)

Worcester Danesmoor System Range

• Danesmoor System 12/18 (GC No. 7716100135)

• Danesmoor System 18/25 (GC No. 7716100136)

• Danesmoor System 25/32 (GC No. 7716100137)

• Danesmoor System External 12/18 ErP+ (GC No. 7731600150)

• Danesmoor System External 18/25 ErP+ (GC No. 7731600154)

• Danesmoor System Utility 25/32 (GC No. 7716100149)

Worcester Heatslave II Range

• Heatslave II 12/18 (GC No. 7716100129)

• Heatslave II 18/25 (GC No. 7716100130)

• Heatslave II 25/32 (GC No. 7716100131)

• Heatslave II 12/18 ErP+ (GC No. 7731600165)

• Heatslave II 18/25 ErP+ (GC No. 7731600166)

• Heatslave II 25/32 ErP+ (GC No. 7731600167)

• Heatslave II External 25/32 ErP+ (GC No. 7731600170)

Worcester GR4700IW Series

• GR4700IW 12s LPG (GC No. 41-800-08 / 7733600378)

• GR4700IW 12s NG (GC No. 41-800-07 / 7733600377)

• GR4700IW 15s LPG (GC No. 41-800-10 / 7733600380)

• GR4700IW 15s NG (GC No. 41-800-09 / 7733600379)

• GR4700IW 18s LPG (GC No. 41-800-12 / 7733600382)

• GR4700IW 18s NG (GC No. 41-800-11 / 7733600381)

• GR4700IW 21s LPG (GC No. 41-800-14 / 7733600384)

• GR4700IW 21s NG (GC No. 41-800-13 / 7733600383)

Why Choose This Product?

The Worcester Safety Valve PRV 87186439890 protects your boiler by maintaining optimal system pressure. It activates instantly when pressure exceeds safe limits, releasing excess to prevent internal damage or failure. Furthermore, its durable design ensures long-lasting performance, making it ideal for new installations and replacements. Additionally, this valve improves boiler efficiency and reliability, reducing the risk of costly repairs while ensuring consistent, safe heating operation.

Delivery and Return

Orders placed before 1 PM are dispatched on the same working day to ensure fast delivery. Moreover, you can choose between standard and next-day courier options during checkout. If you are not fully satisfied, returns are accepted within 30 days, provided the item remains unused and in its original packaging. For safety and warranty compliance, always have the valve fitted by a Gas Safe registered engineer.

FAQs

1. What does the Worcester 87186439890 Safety Valve do?

The safety valve regulates and releases excess pressure from the boiler’s heating system, preventing damage and ensuring safe operation.

2. Which Worcester boilers are compatible with part 87186439890?

It fits Greenstar Compact models, Danesmoor System boilers, Heatslave II range, 533/535 Compact models, Greenstar i System Compact, and Gr4700IW Series, including ERP and NG/LPG variants.

3. How do I know if my safety valve needs replacement?

Signs include leaking water, inconsistent pressure readings, or boiler warnings related to pressure. Replacing promptly maintains system safety and efficiency.

4. Can I install the safety valve myself?

For safety and compliance, it is recommended that a Gas Safe registered engineer performs the installation.

5. Does the Worcester 87186439890 come with a warranty?

Yes, this replacement safety valve comes with a 12-month warranty for reliability and added assurance.