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B&Q£59.47Visit shop B&Q - RelianceInlet Control Multibloc Valve 22mm 3/4.5 Bar Cwic500010
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This Reliance Valves Multibloc Valve is designed for installers of unvented hot water cylinders, offering a crucial all-in-one solution for controlling incoming water supply. Its key benefit is the integration of multiple essential safety and control devices into a single unit, simplifying installation and ensuring system integrity. A potential consideration is its specific application for unvented systems only, requiring careful adherence to system requirements. Key features include a pressure reducing valve, check valve, and pre-set expansion relief valve, all within a compact, one-piece design.
| Model Part Number | CWIC200055 |
|---|---|
| Brand | Unvented Components Europe |
An unvented system is a hot water system where the hot water cylinder is not open to atmospheric pressure. It is supplied directly from the mains cold water system and relies on safety devices like pressure reducers and expansion relief valves to operate safely.
No, this Multibloc valve is specifically designed and approved for unvented hot water systems only. Using it on a vented system would be incorrect and could compromise system safety.
WRAS (Water Regulations Advisory Scheme) Approval signifies that the product has been inspected and tested to ensure it complies with strict water quality, safety, and plumbing regulations in the UK.
This valve features a pre-set 3.0 bar pressure reducing cartridge. For standard installations, no adjustment is typically needed. If adjustment is required, consult the product manual or a qualified installer, as incorrect settings can affect system performance and safety.
The pre-set expansion relief valve is set to activate and relieve pressure at 4.5 bar.
The discharge connection for the expansion relief valve is 15mm.
Installation of unvented hot water systems and their components requires specific knowledge and qualifications due to safety regulations. It is strongly recommended that installation is carried out by a qualified and registered installer.
Check the pressure reducing valve setting. Ensure the inlet pressure is sufficient. Clean the integral strainer for potential blockages.
Ensure all connections are securely tightened. If leakage persists from the body itself, the valve may need replacement.
This indicates system over-pressurisation, likely due to a faulty expansion vessel or excessively high mains pressure. Address the root cause; do not block the discharge.
This is likely related to the hot water cylinder or its thermostat, not the inlet control valve. Consult the hot water cylinder manual.
The check valve may be faulty or obstructed. Ensure correct installation direction. If issue persists, the check valve function may be compromised.
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