Difficult-Media Duty Check
Give us the duty. We will help narrow the valve choice.
Tell us the medium, size, pressure, temperature and operating duty. We will identify critical gaps and help narrow the appropriate valve route.
Start your duty check
Send the information you have. Mention photographs or drawings in your notes and we will explain how to send them securely.
When this check is useful
Use the duty check when you are dealing with:
- abrasive slurries or suspended solids;
- powders, granules or bulk materials;
- viscous, sticky or crystallising media;
- corrosive chemicals or uncertain material compatibility;
- recurring blockages, seal damage or excessive valve wear;
- a replacement valve with incomplete identification;
- an actuated valve where torque, fail position or control details are unclear;
- a new project that needs a defensible valve shortlist before quotation.
What happens next
- We review the information and identify any critical gaps.
- We discuss the most suitable product route, which may include a PREMAFLEX pinch valve, a PTFE-lined butterfly valve, another butterfly-valve configuration or a different valve type.
- Where the duty is sufficiently defined, we prepare or progress a quotation.
- Final suitability is confirmed against the selected valve, materials, current technical data and the complete application conditions.
After submission, your duty details are stored privately for the initial review. We respond as soon as practical; complex or incomplete duties may require follow-up questions or current manufacturer evidence before a quotation can progress.
The duty check is an initial selection service. It is not a guarantee of chemical compatibility, service life or final engineering approval.
Useful next pages
Frequently asked questions
Do I need a complete specification before contacting you?
No. Send the information you have. The purpose of the check is to expose the details that still need to be confirmed before a reliable selection or quotation can be made.
Can you select a valve from the chemical name alone?
Usually not. Concentration, temperature, pressure, solids, cleaning conditions and the full wetted-material set can all affect suitability.
Is the check only for PREMAFLEX pinch valves?
No. PREMAFLEX is one possible route for difficult media. The application may point to a lined butterfly valve, another industrial valve or further investigation before selection.
Can you help identify a replacement valve or sleeve?
Yes. Supply the nameplate, model, dimensions and clear photographs, together with the operating conditions and failure history.
Does the duty check guarantee valve life?
No. Valve life depends on the full application and operating conditions. The check supports selection; final suitability must be confirmed for the chosen product and duty.