weilclain cga gold

[leskerete]

can i change a 30 psig relief water valve for a 50 psig water valve on a weil mclain cga gold 5 gas boiler without there being any complications to the system..

[jpsmith1cm]

I'm going to say NO.

While I'm not terribly familiar with boiler systems, increasing the relief device setting 166% would concern me in any application.

It was designed and built around a 30 pound relief, I'd leave it at 30 and figure out WHY it is relieving rather than trying to cover up the problem with a bigger relief.

[leskerete]

thank you jpsmith1cm thats the same thing i was thinking i ended up changing the expansion tank but the valve is still spraying water... im thinking its defective...so a new 30 should do the job

[On call again]

I'm going to say NO.

It was designed and built around a 30 pound relief, I'd leave it at 30 and figure out WHY it is relieving rather than trying to cover up the problem with a bigger relief.

+1 on the above. Is the expansion tank OK? Pressure reducing valve? Have you checked the accuracy of the pressure gauge with a known reliable second gauge?

On the other hand, are you wanting to increase system pressure because it is installed in a tall building and the system is having trouble keeping water in the radiators on the upper floors? I'm not entirely qualified to answer the question for you; just trying to get a feel for the reason for your wanting to go to a higher relief pressure. If nobody else answers, I do have people I can ask.

[On call again]

Saw your post you made above while I was typing mine, so scratch what I said about the tall building. If it's a pretty normal application I'd stick with a 30# relief and check the other stuff. I carry a water pressure gauge around with me to check boiler system pressures, as I never trust the gauge on the boiler itself fully. I've seen many of them read 15 psi or whatever on a system that was virtually empty. The gauge I carry has fittings attached that allow me to connect it to any boiler drain or hose bid. Just keep it in your coat pocket though--I used to leave mine in the truck, and had to replace the gauge twice because it had the tiniest bit of water in it, which froze and ruined the gauge.

[Tech23]

Welcome to the site,

I hope you find the forums to be very helpful. Are you in the trade or working on your system at your house?