Welcome to our site! Electro Tech is an online community (with over 170,000 members) who enjoy talking about and building electronic circuits, projects and gadgets. To participate you need to register. Registration is free. Click here to register now.
ASCO is one of several suppliers. Things that I might wonder about:
1. Flow rate is good to know - no point in buying more valve than you need.
2. How much pressure loss or drop can be taken across the valve. Before you say "little or none" realize that it can profoundly impact the cost of the valve to you.
3. The pressure difference across the valve, when off, may determine how tightly it seals or if it will even stay "off."
MSC and McMaster-Carr will (or used to) sell things like this to individuals. Grainger is a good source too but normally you need an account. Best to see what brands they handle (and check the cost) then look to specific manufacturer's for info on applications.
Forgot to mention that MSC or McMaster are large supply houses. My experience with them is excellent but you have to know what you want in terms of their catalog number. All of this presumes you are here in the US. I'd guess that they'd export but that would seem to be an expensive route.