I presume you mean a non return valve and would invariably have to say 'yes!'Hi all, i have fire ext and regulator and will be using inline diffuser.
Is it a good idea to put one of those stop valve things on the tube to prevent water flowing back to regulator??
Thanks
Sean
Ok,thats a must then. Il pick one up. ThanksAlways have a non return valve on gas lines going into your tank. Even without considering protecting equipment connected to the line, if the line disconnects from the regulator or air pump the whole tank volume of water can drip onto your carpet through it. A £2 piece of plastic for that level of peace of mind is absolutely worth it imho.