Caleffi F0001021 Loose Nut Multibloc Inlet Control Valve 22mm 3/6 Bar Pressure Regulating Valve for Unvented Hot Water Cylinders
Caleffi F0001021 Multibloc Valve offers 3 Bar pressure reduction, 6 Bar safety relief, check valve, and filter in a durable 22mm copper x copper loose nut assembly for unvented systems.
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- Estimated Delivery: For most items (over 99% of our products), orders placed before 3pm on working days will be dispatched the same day with our Fast DELIVERY 1st class service. For the rare items not immediately in stock, dispatch may take 1-3 working days after receiving your order. If your order cannot be dispatched the same day, we will notify you via email.
- For boilers: We aim to dispatch on the next working day. However, in some cases, it may take 2-3 working days to dispatch. Rest assured, we will always strive for the fastest possible turnaround.
The Caleffi F0001021 Multibloc Valve is engineered for reliable pressure control in unvented hot water systems. Designed as a single-unit solution, it incorporates a 3 Bar Pressure Reducing Valve (PRV), 6 Bar Safety Relief Valve (SRV), non-return check valve, and a fine-mesh filter, offering full system protection in one compact component.
Built with 22mm copper x copper loose nut connections, this valve simplifies installation and servicing, making it ideal for both residential and commercial plumbing environments. With maximum inlet pressure of 12 Bar and a working temperature tolerance up to 65°C, it delivers robust performance and peace of mind.
Compliant with industry safety standards and built from high-grade materials, the Caleffi F0001021 is a trusted choice for installers seeking durable, maintenance-friendly pressure control in domestic or light commercial systems.
Key Features
• Multibloc Design – Combines PRV, SRV, check valve, and filter into one integrated valve body
• Precise Pressure Control – Factory-calibrated to 3 Bar PRV and 6 Bar SRV for system safety
• High Durability – Rated for 12 Bar inlet pressure and 65°C operation
• Loose Nut 22mm Copper Connections – Enables quick and easy integration into pipework
• All-in-One Safety Component – Reduces installation time and protects against overpressure and debris
Applications
• Unvented Cylinder Systems – Ensures safe water pressure in sealed systems
• Residential Plumbing Installations – Efficient and compact pressure control
• Commercial Hot Water Systems – Suitable for professional-grade cylinder management
Technical Specifications:
| Feature | Details |
|---|---|
| Brand | Caleffi |
| Product Code | F0001021 |
| Connection Type | 22mm Copper x Copper (Loose Nut) |
| Pressure Reducing Valve Setting | 3.0 Bar |
| Pressure Relief Valve Setting | 6.0 Bar |
| Maximum Inlet Pressure | 12 Bar |
| Maximum Working Temperature | 65°C |
| Dimensions | Standard for 22mm Connections |
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