My gascolator has the same push type drain valve as my fuel tanks supplied in my Vans kit. It is a Saf-Air CAV-110 valve. If you buy some spare O-rings from Spruce ($.45 each), be advised, they are not resistant to auto fuels. Make sure you use thread sealant when you reinstall the valve and don’t get it on the first couple of threads. An O-ring lube applied to the O-ring prior to installation will make it easier to install on the valve. I carry a spare drain valve and a couple spare O-rings in my flyaway kit.