Featured Post

RAJ Vs KOL Eliminator Match - Team (23.05.18)

Venue:  Eden Gardens, Kolkata Date & Time: 23rd, May, 07:00 PM  Rajasthan Royals (All Players): Ajinkya Rahane (c), Stuart Binny, Ben Laughlin, Jaydev Unadkat, Sanju Samson, Ish Sodhi, Krishnappa Gowtham, Rahul Tripathi, Shreyas Gopal, Heinrich Klaasen (w), Jofra Archer, Dhawal Kulkarni, Anureet Singh, Ankit Sharma, Dushmantha Chameera, Prashant Chopra, Jatin Saxena, Mahipal Lomror, D Arcy Short, Aryaman Birla, Sudhesan Midhun Kolkata Knight Riders (All Players) : Dinesh Karthik (c), Sunil Narine, Chris Lynn, Robin Uthappa, Nitish Rana, Andre Russell, Shubman Gill, Shivam Mavi, Javon Searles, Prasidh Krishna, Kuldeep Yadav, Rinku Singh, Mitchell Johnson, Tom Curran, Piyush Chawla, Vinay Kumar, Ishank Jaggi, Apoorv Wankhade, Cameron Delport Probable Players RAJASTHAN : Ajinkya Rahane (c), Heinrich Klaasen (w), Stuart Binny, Ben Laughlin, Jaydev Unadkat, Sanju Samson, Ish Sodhi, Krishnappa Gowtham, Rahul Tripathi, Shreyas Gopal, Jofra Archer KOLKATA:   Dine

Thermal Expansion Relief Valve

Remember that this is a relief device that reacts to high pressure – NOT TEMPERATURE. Some engineers have the erroneous impression that a thermal relief valve reacts to temperature. This is an erroneous concept. What this means is that the valve will respond to high gas pressure as well as to high liquid hydraulic pressure. HOWEVER, this type of relief valve cannot be relied upon to discharge the proper amount of excess gas or vapor that may be needed – for example, in a fire case. Recall what I stated above: these valves have a narrow scope of work and if there are TRVs on a liquid pipeline that may be used for other services – especially gas, vapor, or 2-phase flow – it is very important that this be noted on the related P&ID and, if possible, on the TRV itself. As a responsible engineer it is very important that you correctly identify what this valve protects against so that a false sense of security is not assumed.

Comments