... -15,WYA-20 4.ISO9001,CE cetificate. Function:The T/P relief valve controls and limits the te:mperature and pressureof ... prevents it from being able to reach temperatures of over100°C, with the formation of steam.On reaching the settings, the ... valve is set to open at temperatures of over 99°C.- pressure: the obturator, opposed by a set spring, raises ... 90,99- pressure: 5-6 - 7 - 10 bar Brass T/P Valve