W.L.Hamilton & Co.
PO Box 766
Marshall, MI 49068
Phone: 269.781.3100
Fax: 269.781.6963


W.L. HAMILTON & COMPANY
, is a manufacturer of pressure relief valves, unloader valves, agricultural spray guns, spray nozzles, and accessories.

Hamilton has been in the business of supplying quality products for over 70 years. Our pressure relief valves are used in a variety of applications including fire, water, pest control and industrial cleaning. Hamilton unloader valves are widely used in truck washes across the the US and Canada.

Our valves and nozzles are produced in our Michigan factory using only the highest quality materials.


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