Altecnic / Caleffi 309 Series - 309570CST - Pressure & Temperature Relief Valve 3/4" 90°C 7 Bar 15mm The valves are available in

The valves are available in different pressures ranging from 3

• Taper threaded BS EN 10226 formerly BS 21

Max Pressure (Bar): Up to 500 Ltr 8

• Ratings align with BS EN 1092-2 PN16 (formerly BS 4504)

- A wide range available from 2 to 5000 litres

Altecnic / Caleffi 309 Series - 309570CST - Pressure & Temperature Relief Valve 3/4" 90°C 7 Bar 15mm The valves are available inDescription This is a stock item. Order by 5pm Monday to Thursday and 4. 30pm Friday for same day despatch. The Altecnic Caleffi series 309 temperature & pressure relief valve controls and limits the temperature and pressure of the hot water contained in a domestic storage heater and prevents it from being able to reach temperatures of over 100C, with the formation of steam. On reaching the settings, the valve discharges a sufficient amount of water