Caleffi

Products in Caleffi

Caleffi
Caleffi boiler safety group 1" up to 50 kW with insulation, automatic air vent, 3 bar safety valve and pressure gauge
Pre-assembled boiler safety group of the 302 series for closed heating systems to EN 12828 up to 50 kW heat output. The group combines automatic air vent, pressure...
● Available
71,99 €incl. VAT
Caleffi
Caleffi safety valve 6 bar for potable water and solar
Safety valve with a factory setting of 6 bar that opens automatically when the set pressure is exceeded and relieves the overpressure. Two versions: diaphragm safety valve 1/2"...
● Available
from 29,99 €incl. VAT
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Caleffi
Caleffi thermo-pressure gauge 1/2" with immersion sleeve, Ø 80 mm
Combined thermometer and pressure gauge (model 503140) for displaying temperature and pressure in heating and cooling systems. Bottom connection 1/2" with immersion sleeve.Note: Mounting and connection by a...
● Available
74,49 €incl. VAT

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Guide & news

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Luftschleier 28. Okt. 2026 · 8 Min. read Air curtains for cold rooms: less cooling loss and ice An air curtain for a cold room reduces cooling loss, condensation and icing at the open door. We explain why these un... Read article Luftschleier 28. Okt. 2026 · 9 Min. read Air curtains in shops: saving energy at the open door Saving energy with an air curtain in a shop: where the losses at the open door come from, which savings are documente... Read article Sanitär 28. Okt. 2026 · 7 Min. read Press Fitting Systems Compared: Stainless Steel, Carbon Steel, Copper Press fitting systems compared: stainless steel, carbon steel and copper with fields of application, pressure ratings... Read article Trinkwasser 28. Okt. 2026 · 8 Min. read Choosing a Hot Water Cylinder: Size, Type and Heat Exchanger Choosing a hot water cylinder made easy: cylinder types, sensible size, heat exchanger surface for heat pump or boile... Read article Solar 28. Okt. 2026 · 9 Min. read Understanding Solar Controllers: From Temperature Differential to Data Logging Solar controller functions determine the yield and service life of your solar thermal system. We explain temperature ... Read article Küchenabluft 28. Okt. 2026 · 7 Min. read Cooker Hoods in Open-Plan Kitchens: Planning Against Grease Mist If you want to plan the cooker hood in an open-plan kitchen, you need to consider grease mist and odours throughout t... Read article Küchenabluft 28. Okt. 2026 · 7 Min. read Kitchen Extraction and Hygiene: HACCP Requirements for Ventilation HACCP in the kitchen also covers ventilation. We show what the EU Hygiene Regulation requires, how air is routed from... Read article Luftschleier 28. Okt. 2026 · 9 Min. read Sizing an air curtain correctly: door height, width and heating Sizing an air curtain correctly: why mounting height matters more than door height, how to match the unit length to t... Read article

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