About DMM

Derbyshire, Mack & Morgan, Inc. was founded in 1924 as a manufacturer’s representative and distributor serving the industrial pipe, valves, and fittings industry. We specialize in the sale of safety and relief valves, pressure gauge and temperature measurement instrumentation. We have been a Kunkle Valve representative since 1948 and Kunkle has been manufacturing safety and relief valves since 1876. The first valve Kunkle designed was the Model 1 and while it has undergone many changes and improvements over the years the original design concept and features still remain intact today.

We have a highly trained staff with over 60 years of combined experience to help you select the proper device for your application. We also have large inventory of products to ensure quick shipment to meet your needs.

We appreciate you visiting our site and look forward to assisting you soon.