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Categories
Manufacturers
- ACL Drayton (Invensys)
- Adey
- Antares
- Biworld
- BritTherm
- Caleffi
- Campini Corel
- Cotherm
- Danfoss Randall
- Delta Dore
- Do Heating
- Emmeti
- EPH
- ESI
- Fernox
- Giacomini
- Grasslin
- Grundfos
- Herz Valves
- Honeywell
- Horstmann
- Ivar
- Neomitis
- Nest
- Optimum
- Other
- Owl
- Pegler
- Potterton Myson
- Reliance Water Controls
- Salus
- SBK
- Scalemaster
- Seitron
- Sentinel
- Siemens (Landis & Staefa/Gyr)
- Sunvic (Satchwell)
- Thermowatt
- Tower
- Watts Electronics
- Wilo
Express delivery for Thursday Available Until 4pm Tomorrow
UK Mainland Only
Express delivery for Thursday Available Until 4pm Tomorrow
UK Mainland Only
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Caleffi 309 Temperature and Pressure Relief Valve
Price: £39.59
Ex VAT: £32.99
Ex VAT: £32.99
Stock: In Stock
Q: We have a caleffi 309 valve on our ecocyl tank - does this in any way valve control the temperature in the tank? Our water is very hot, and I have tried turning down the the dial on the upper immersion element, but it seems to make no difference.
A: No. It is a safety device that draws off water if the temperature or pressure is too high. The top immersion heater is only for boost. You will need to turn down the bottom one as well.
A: No. It is a safety device that draws off water if the temperature or pressure is too high. The top immersion heater is only for boost. You will need to turn down the bottom one as well.
Q: Hello
We have a Caleffi 309 Temperature and pressure relief valve fitted to a Dimplex water cylinder. It has a constant drip (1 drip per second). Could it be debris and if so how do I remove it? or does it need replacing. Fitted March 2013.
Regards Ian
A: It is unlikely to be debris, check the pressure and temperature are not being exceeded. If they are not, then it will need replacing.
A: It is unlikely to be debris, check the pressure and temperature are not being exceeded. If they are not, then it will need replacing.
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Temperature and pressure relief valve.
For hydraulic systems to protect the hot water storage.
- Setting temperature: 90°C.
- DN15
- 7 Bar
- 1/2" x 1/2"/15mm
EN1490 - MOD. 309 - DN15 - 10kW
For use on range unvented cylinders
309470
Alternative replacement:
https://www.heatingcontrolsonline.co.uk/watts-temperature-pressure-half-inch.html
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