The Watson McDaniel series O direct operated pressure reducing valve is an economical solution for reducing water pressure to process equipment. The O Series, with cast iron body and hardened stainless internals, is our most popular and economical solution for reducing pressure in systems.

Simple adjustable outlet pressure ranges
Available in sizes 3/8", 1/2", 3/4" (High Capacity option), 1", 1-1/4", 1-1/2", and 2"
Hardened stainless steel seat and disc for longer service life
Viton diaphragm, 300 F maximum temperature
Watson McDaniel series O direct operating pressure regulating specification sheet
Watson McDaniel series O direct operating pressure regulating installation, operation, and maintenance manual