Choosing the wrong plastic is the most expensive mistake in corrosive piping. A material that swells, cracks or softens in your media fails early — and takes the line, and your schedule, down with it. Our plastic valve material selection service is free: tell us your operating conditions and our engineers recommend the right material — honestly. If a cheaper plastic will do the job, we’ll say so; if your media needs PVDF, we’ll explain why. We’d rather you buy the correct valve once than the wrong one twice.
How It Works
- Tell us your conditions — the media and its concentration, operating temperature, pressure and line sizes
- We check compatibility — against UPVC, CPVC, PPH and PVDF performance data and our field experience
- You get a recommendation — the most economical material that genuinely survives your service, with the reasoning, plus a quotation if you want one
The Four Materials at a Glance
- UPVC — water and dilute chemicals, up to 55°C, most economical
- CPVC — hot acids and chlorinated water, up to 100°C
- PPH — hot caustic and alkaline media, up to 85°C
- PVDF — concentrated acids, solvents and ultra-pure media, up to 120°C
For media-by-media detail, see our PVDF Chemical Resistance Guide.
What to Send Us
The more precise your inputs, the more precise our answer. Helpful details: the chemical name and concentration; the maximum operating and any peak temperatures; working pressure; line sizes; and whether the service is continuous or intermittent. A photo of the existing line or a spec sheet helps too.
Three Material-Selection Mistakes We Help You Avoid
- Choosing on price alone — a cheaper plastic that fails in 18 months costs far more than the right one
- Ignoring trace components — a “weak” stream with a trace solvent or oxidiser can demand a higher material than the bulk media suggests
- Forgetting the seals — the body and the O-ring/seat must both suit the media; the right body with the wrong seal still leaks
Frequently Asked Questions
How much does the service cost?
It’s free and carries no obligation.
What information do you need from me?
Media and concentration, temperature, pressure and line sizes. A spec sheet or photo helps.
What if more than one material works?
We recommend the most economical option that meets your duty, and explain the trade-offs.