Hoyt hired Chal Campbell in 1946 when he returned home from World War II . Chal handled all the service so Hoyt could focus on sales. Hoyt’s son, Bob Sevey, joined the company in 1956 after graduating from the University of Minnesota with a mechanical engineering degree and completion of 2 years of military service.
In 1961, Bob and Chal bought the business from Hoyt and incorporated it as Campbell-Sevey, Inc. with Bob as president. That same year Bob, on a handshake with owner Bud Fox, brought Kunkle Safety valves to Campbell-Sevey to complement the Spence valve account. That hand shake still enforces the longstanding relationship.
The business grew throughout the ‘60s and ‘70s with more product lines and additional employees. One move the company made in the early ‘70s was to diversify into power plant and industrial process industries. Capital equipment such as pollution control precipitators, scrubbers, thermal oxidizers and bag houses was added.