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The Alde FrostControl Safety Drain Valve is a combined safety pressure relief and drainage valve designed for Alde hydronic heating and water systems in caravans and motorhomes. It features integrated frost protection that will automatically open and drain the water heater when temperatures approach freezing (typically around +3 °C), helping to protect the boiler and plumbing from damage caused by frost.
This valve installs near the incoming fresh water connection on your Alde heater and also functions as a manual drain tap, giving you flexible control during servicing or winterisation.
❄️ Automatic Frost Protection: Opens and drains the water heater when the ambient temperature nears freezing (~+3 °C) to prevent frost damage.
💧 Combined Safety & Drain Function: Acts as a safety/pressure relief valve and a manual drain tap in one compact unit.
🔩 Designed for Alde Systems: Made for use with Alde hydronic heaters to fit standard plumbing points.
🛠 Simple Installation: Typically installed close to the boiler’s fresh water inlet for best performance.
| Feature | Specification |
|---|---|
| Brand | Alde |
| Product Type | FrostControl safety & drain valve |
| Part Number | 3010430 / 3010431 (model dependent) |
| Function | Automatic frost protection + manual drain for water heater |
| Fitment | Alde hydronic heating and water systems |
| Connection Type | Typically 12 mm John Guest or hose connection variant available |
| Approx. Weight | ~0.15 kg (150 g) – typical for a small valve assembly |
1 × Alde FrostControl Safety & Drain Valve – combined safety and frost drain unit
Position the valve near your Alde boiler’s incoming fresh water pipe.
At normal temperatures, the valve remains closed and functions as a safety/pressure relief and manual drain.
As temperatures approach freezing (~+3 °C), the frost control mechanism opens automatically and drains fluid from the water heater, safeguarding the system from freeze damage.
You can also open the drain manually for winterisation or servicing by using the drain lever (where supplied).
Caravan and motorhome owners using Alde hydronic heating and hot water systems
Travellers preparing for winter storage or winter touring
Service technicians performing annual maintenance and safety checks
Water left in a caravan’s heating or hot water circuit can freeze and expand in cold weather, potentially damaging boilers, pipes and seals. The Alde FrostControl Safety Drain Valve mitigates this risk by automatically venting and draining when temperatures drop to near-freezing, while still providing pressure relief and manual drain capability for servicing or winterisation.
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