Hygienic Diaphragm Valve Bonnet Assemblies from Top Line

Hygienic Diaphragm Valve Bonnet Assemblies from Top Line

TOP-FLO® manual bonnets offer many features that have been carefully designed with the user in mind. The advanced bonnet design takes into account environmental stresses such as cleanability, reliability, autoclave use, adjustment, and ease of maintenance. 100% BPE Compliant with full material traceability.

#09, #10, #12, #15, and #18A bonnet assemblies.


The TOP-FLO® stainless steel bonnets are produced using the investment casting process resulting in a durable and lightweight valve operator. Stainless steel bonnents are electropolished externally providing a bright and sanitary exterior that also enhance its corrosion resistance. Ergonomically designed thermoplastic hand wheel and highly visible yellow indicator are standard on stainless steel bonnents sizes 1/2”-2. Bonnet sizes 2-1/2”- 4 have electropolished stainless steel bodies with stainless steel handwheels. All manual bonnet versions have sanitary internals as standard.

Top-Flo® Hygienic Diaphragm Valves