Reddit reviews Milton (S-684-4) 1/4" MNPT Male Tank Valve
We found 5 Reddit comments about Milton (S-684-4) 1/4" MNPT Male Tank Valve. Here are the top ones, ranked by their Reddit score.
INCLUDES: Standard valve core and plastic cap. Overall length (with cap): 1.5 inch.DESIGNED: For use with air compressor tanks to fill vessels with air.IDEAL: Tank valve prevents air from leaking out while allowing for air to pass through for inflation.NPT: 1/4" Male national pipe thread. Cap thread size: .305-32.MAXIMUM AIR PRESSURE: 200 pounds per square inch (PSI).Milton is your number 1 source for Quality Air AccessoriesSince 1943 Milton has been producing Quality Air AccessoriesMilton covers automotive, industrial, hardware, agriculture, heavy-duty fleet and MRO markets
I'm glad to see more people are mentioning this, it's (IMO) a much better way to leak test without the risk of actual leaks. Some Amazon links for my current setup:
You'll need a pressure gauge, https://www.amazon.com/dp/B0087UCI8C/ has a relatively low maximum for high sensitivity (easy to see if there's a drop)
You'll need a valve you can hook a hand pump on to (like what you'd use to pump up a bike tire -- I don't recommend an electric pump because of the low pressure you need). https://www.amazon.com/dp/B001PLI4BA/ is in the same threading as the gauge.
You'll need a tee to connect these things to -- https://www.amazon.com/dp/B000BQUTBS/
Finally, connecting the tee to your rig. I take a scrap of tubing, put a fitting on one end, and slip the other over: https://www.amazon.com/dp/B000CFNKBO/ (check for your tube's inside diameter!).
Assembly is pretty straightforward, wrap some pipe tape around each component's threads and screw into the tee. Before connecting to your rig, you may want to cap the open end and pressurize it a bit to make sure you're not starting with any leaks. Connect in to your fill or drain port as appropriate, and slowly pressurize the system. You don't need a ton, only 8-10 psi is plenty, and is more than the water will be operating at. Mark the gauge position, and come back in a few hours. If the needle has moved, you've got a leak -- you can swab glycerin or dawn soap around your seals to find where. If not, you know that air at higher than normal operating pressure isn't leaking out, and that's a nice tolerance to know you have!
Amazon
I had these on my 48 and that's what I did. Used these valves. Just make sure you get a no-loss pump to pressurized them with - HD sells one for about 50 bucks and it's worth it. The shock volume is so small a normal bike pump will let out a few psi when you disconnect.
I'm around 200 lbs and ran around 13 psi solo (or 18 2-up). I found anything lower than 10 would bottom out on rough roads.
Great ride though!
You don't need to buy those pre-made ones. You can just make one yourself with cheapo non-watercooling components. Low-pressure air gauge, a schrader valve, a t-block with one male and two female ends, and a thread adapter. About $20 worth of stuff, assuming you already have something to pump it with.
Are you talking about something like this ?
You will need a 1/2-1/4 bushing
Maybe a coupler connected to a 1/2” tapered barbed fitting