Difficulty with plastic valves

[Hanter12]

I am from Australia and am having problems sourcing plastic check valves and three way valves which are suitable for 8 x 5 hose. I am using these components for a dosing system whereby the three way valve will allow me to divert flow from two different source tanks (each with a different pump) to a common discharge point. The chemicals I'm using are nitric acid and palladium. Any suggestions as to where I could get valves these small or if there is an alternative set-up. Thanks Guys

 

[btrueblood]

8x5 hose? Is that 8mm o.d. x 5mm i.d.?

Nitric acid? What strength? This may limit your choices significantly.

Lastly, palladium is not a fluid - unless its powdered? You probably mean some kind of palladium solution, such as chloride or fluoride?

That said, try:

http://www.mcmaster.com

- look at their catalog page 389 for check valves that might work.

3-way valves? Why not two two-way valves and a Y-fitting, that might be easier to find.

 

[Hanter12]

8x5 hose? Is that 8mm o.d. x 5mm i.d.?
-Yup

Nitric acid? What strength? This may limit your choices significantly.

-40 % nitric acid solution


Lastly, palladium is not a fluid - unless its powdered? You probably mean some kind of palladium solution, such as chloride or fluoride?

-Yup it is palladium chloride

3-way valves? Why not two two-way valves and a Y-fitting, that might be easier to find.

-Thanks for the suggestion. The main difficulty is finding a supplier here in Australia which stocks valves for hoses as small as what we're using