Building a Digital Spunding Valve
Updated: 4/23/2024
A Spunding Valve allows you to maintain a set pressure. If pressure in the vessel exceeds the set point, it is expelled. It generally consists of an adjustable PRV valve, a tee, a gauge and a way to connect to your keg. Read lots and lots more about Spunding Valves, ways to use them and different build options on our Spunding Valve Resource Post
Building a digital Spunding Valve is as simple as using a digital gauge in your Spunding Valve Build.
I tried a couple different digital gauges and settled on this one – pictured in the assembly above. The other gauge I tried was much more expensive and didn’t really work well. It drifted wildly. This was a reasonable price and has given me accurate and consistent readings. This photo shows two gauges hooked up to the same keg – agreeing on PSI.
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The really nice thing about this digital gauge is the .1 PSI resolution. That’s really handy if you’re using the gauge to try and find leaks. It allows you to see pressure changes more quickly.
My gauge came with this user manual/specifications sheet – front | back. One quick tip… the threads aren’t super long. The first time I put this digital Spunding Valve together, I noticed the pressure dropping, again… the .1 PSI resolution is handy for spotting just this issue! Anyway, I didn’t have the gauge quite tight enough and it was showing a slow leak. Easy fix, I took the gauge off, put a couple extra wraps of teflon tape around it and tightened it a little more. Whammo!
Digital Low Pressure Gauge with 1/4” NPT Bottom Connector and Rubber Protector by Uharbour, Range to 60 psi, Accuracy 1%, Resolution 0.1psi – affiliate link, note that multiple variations of this product may be available, as such a different version may appear at this link
Shop Around: Search Amazon for “digital gauge 1/4″ npt” and look for a unit that’s appropriate spec’d for your application
This write-up is part of my Spunding Valve Resource Post – Jump To This Section
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Make sure the components you use are compatible and rated for your intended application. Contact manufacturer with questions about suitability or a specific application. Always read and follow manufacturer directions. top:spundingvalvelnksto lnksto:spundingvalve rp:lnkstodigspunding