Material and series selection
- Confirm the required approval, such as WRAS or NSF/ANSI 61.
- Specify the certified grade and supplier documentation.
- Check hot-water temperature and cleaning regime.
By fluid
Potable Water
WRAS · NSF-61 — certified polymer inserts
Temperature+4 / +60 °C
Max. pressure16 bar
Standards3
Potable-water projects require documented approvals for the specified market and for every relevant material grade, not only a generic polymer name.
Installation checks
- Keep support surfaces clean and protected during installation.
- Prevent external corrosion from condensation or washdown.
- Retain approval records for the delivered material grade.
Common mistakes to avoid
- Assuming all PP or PA grades carry potable-water approval.
- Using unverified coatings or cushions.
- Losing traceability between approval and delivered material.
Where this service appears
Cold and hot-water lines require clean installation and documented approved grades.
Frequent washdown and hygiene rules affect external hardware and mounting.
Disinfectants, outdoor exposure and certification requirements must be considered together.
Material compatibility
| PPPolypropylene−20/+100 °C | PAPolyamide 6/66−40/+120 °C | NBRNitrile rubber−40/+100 °C | PVDFPVDF (Kynar®)−40/+150 °C | MetalMetal (Al/Steel)−196/+425 °C | |
|---|---|---|---|---|---|
| Potable waterWRAS / NSF-61 — certified grades | A | A | A | A | D |
| ⚠ Use certified material grades and verify every wetted or exposed component against the required potable-water standard. | |||||
A — ExcellentB — GoodC — LimitedD — Not recommended
Full compatibility matrix Fluid variants
Cold water supply
+4 to +25 °C, PN16
Municipal / building
Hot water circulation
+25 to +60 °C, PN10
Specify certified insert grade
Applicable standards
WRAS BS 6920Suitability of non-metallic products for contact with waterNSF/ANSI 61Drinking water system components — health effectsEN 1717Protection against pollution of potable waterComplete clamp assembly selection
| Assembly item | Selection guidance |
|---|---|
| Clamp body | Specify the approved polymer grade, not only PP or PA. |
| Hardware | Select for condensation, washdown and local hygiene rules. |
| Installation | Protect clean surfaces and avoid contamination during work. |
| Traceability | Link delivered batches to approval and material records. |
Recommended series
Related technical resources
Pipe clamp selection guideCheck OD, load, vibration, material and mounting method before specifying.Read guide Pipe clamp spacing guidePlan supports around bends, valves, pressure pulses and equipment vibration.Read guide Pipe clamp material guideCompare PP, PA, NBR, metal and stainless choices by fluid and environment.Read guide DIN 3015 standard guideUnderstand standard, heavy and twin clamp families for industrial pipework.Read guide
Details needed for a reliable recommendation
Send these operating details with your enquiry so the complete clamp assembly can be reviewed.
- Exact fluid/product name and concentration
- Continuous, peak and cleaning temperatures
- Pipe OD, material, wall thickness and quantity
- Pressure, pulsation, vibration and support load
- Indoor/outdoor exposure, salt, UV and washdown
- Required standards, certificates and mounting method
Frequently asked questions
Are all PP clamps approved for potable water?
No. Approval applies to specific material grades, products and markets.
Does the clamp touch the drinking water?
Project specifications may still require approved materials, hygienic installation and controlled external components.