What material should a butterfly valve for Glycerine / Glycerol (C₃H₈O₃) be?

SS 316L (Excellent): Preferred for pharmaceutical and food-grade glycerine. PTFE seals (Excellent): Best for pharmaceutical glycerine - no extract, USP VI compliant. Carbon Steel (Good): Acceptable for industrial glycerine (non-pharma). Bronze/Brass (Good): Traditional material for glycerine utility valves. EPDM seals (Good): Acceptable for food/cosmetic grade glycerine.

Glycerine / Glycerol (C₃H₈O₃) service

Service Selection

Butterfly Valves for Glycerine / Glycerol (C₃H₈O₃) Service

Which butterfly valves configuration suits Glycerine / Glycerol (C₃H₈O₃) (C₃H₈O₃), in which material, to which standard — from real service data, with the pitfalls flagged.

Which butterfly valves for Glycerine / Glycerol (C₃H₈O₃)?

Butterfly Valve (SS 316L, EPDM seat) - Large-bore glycerine storage and distribution in biodiesel plants Typical service window: 1–10 barg, 25–80°C (process); up to 120°C (sterilisation/SIP).

Recommended Configurations

Butterfly Valve (SS 316L, EPDM seat)

Large-bore glycerine storage and distribution in biodiesel plants

Body Material for Glycerine / Glycerol (C₃H₈O₃)

Rated from real compatibility data - click any material for the full decision page.

SS 316LPreferred for pharmaceutical and food-grade glycerine.Excellent PTFE sealsBest for pharmaceutical glycerine - no extract, USP VI compliant.Excellent Carbon SteelAcceptable for industrial glycerine (non-pharma).Good Bronze/BrassTraditional material for glycerine utility valves.Good EPDM sealsAcceptable for food/cosmetic grade glycerine.Good

Governing Standards for Glycerine / Glycerol (C₃H₈O₃) Service

USP Class VI (pharmaceutical)ISO 9001:2015ASME BPE (biopharma)FSSAI (food-grade)

What to Avoid in Glycerine / Glycerol (C₃H₈O₃) Service

Reduced-bore valves for high-viscosity glycerine - excessive pressure drop

Service Considerations

Heat glycerine to 60°C to reduce viscosity for pumping - all transfer lines may need heat tracing
Pharmaceutical grade: ASME BPE compliant valves, Ra ≤0.8 µm internal surface finish
CIP/SIP compatible design required for pharmaceutical glycerine
Biodiesel plant crude glycerine: methanol residue may be present - check compatibility