Polymer valve for corrosive environment

Handling / Materials:       Food pastes

Client / Industry:             Machinery manufacturer

Geo Location:                USA

The requirement:

• 3” valve with TC connections
• Valve materials with better corrosion resistance than St/st 316L
• Not too expensive

The solution:

After some research it turned out that the materials being processed, whilst highly corrosive for st/st, were compatible with certain grades of Peek-like polymer, and indeed that a silicone seal was also suitable.

We were able to propose a custom valve with Peek body, Hastelloy C-22 leaf and silicone seal.  This has the advantage of being substantially cheaper and much lighter than a full Hastelloy valve would be.