I have a hot water oil burner. I need step by instructions on how to replace the pressure relief valve.Do you know?Please help me.
Your first question should be why did my releif valve fail! is the expansion tank waterlogged or low on air pressure, is the water fill valve allowing the system to overpressure, is the aquastat failing or improperly adjusted....You need to figgure out what made it fail before you throw money into a new valve. beyond that the other guy said it fairly well, personally i would isolate the boiler if there are valves on the supply and return, release the pressure AFTER killing the power to the boiler and letting it cool off, knock the pressure off the boiler, spin the valve off, dope the threads and reinstall...not hard...remember righty tighty lefty loosey
Your precise, the priority could desire to have long previous away with the previous valve. Your new valve could be defective. in the previous you substitute it however there's a reliable probability your furnish rigidity is to extreme. it must be filling at a extreme rigidity to start with and then as quickly as heated it exceeds the shrink. This sounds like a greater sensible clarification and could greater healthful the priority. while you're hooked to a municipal water furnish they could be in possibility of pay the cost of having a ''rigidity regulator'' put in. or you will could desire to foot the bill.
First off shut it down and let it cool off turn off the water source and the power to the unit. You will need either a large adjustable wrench or a monkey wrench to remove the valve if there is a drain pipe connected remove it first. Check the temp stamped on the old one and make sure the new one is for the same temp. you will need Teflon tape wrap around the threads several times to form a good seal.tighten and put the valve at the same angle it was before. Turn everything on and run unit to check for leaks. Good luck
I assume you are referring the pressure relief valve on the boiler water vessel, and not the oil line relief valve on the burner. The pressure relief valve is a very important safety device that needs to be properly sized and fitted to boilers and pressure vestals. It is sized and built to relieve as much as, or a percentage more than the BTU output of heat which it's burner can produce. It's inlet size and outlet sizes must never be compromised. It should match what was original on the Mfg.'s specifications on the name Tag of the boiler. (DO NOT TAKE FOR GRANTED THAT THE PRESENT RELIEF IS THE ORIGINAL.) Read the info on the valve tag and compare with the input and output rating on the boiler burner ratings unless your the original owner and know its correct. Because of safety reasons I would recommend.that you allow a professional HV-AC Boiler Technician to change out the relief. He would turn the boiler off, secure the water side and burner side and valves to Isolate your boiler (so as to not drain your system) take the pressure off, drain just a bit and remove the relief ,with the proper wrench. ********Safety note: Most Reliefs are built of soft metal (Brass) or Bronze when fitted out or into the pipe fittings it is very important to use the proper wrench and not place the wrench on the body or any other place on the valve but the proper shoulder made for the proper wrench. When the new valve is installed the the boiler needs to be placed back in original settings of valves and switches. Fill water back on, Vent air from system, fired and tested for leaks. The above safety notes are just a few reasons to have a Licensed experienced boiler man do the job Please be careful, Blessings Rangefinder
