A Leading Supplier of Sanitary Stainless Steel Process Equipment

Bonnet Assemblies For Diaphragm Valves (#9, #10, #60, #12, #15, #18A)

Diaphragm Valve Manual Bonnet Selection

  • Sanitary internals
  • FDA FKM O-ring sealed hand wheel and stem
  • Non-galling internal stem assembly
Learn More

Our Products

The Markets We Serve

Download your material test reports (MTR's)

MTR Search spyglass icon

Always Giving You Top of the Line Service and Quality

See what people have said:

I just love doing buisness with Top Line. You guys put me in a very profitable business 20 years ago. Thank you for all of the assistance in making a successful career for me personally. C&G is very fortunate to have a responsive vendor that helped put them on the map.

Martha Brooks – Cohn & Gregory
View more testimonials