Regular: 1-1/2", 2", 2-1/2", 3", 4"
Flanged: 2", 3" or 4"
Industrial combustion regulators combine new technology with modern design to provide greater capacity, higher inlet pressure, more accurate performance, and faster speed of response. In most cases, this will allow the use of a smaller regulator. Both models of regulators have high strength, corrosion resistant, die-cast diaphragm cases and cast iron bodies, assuring a highly functional regulator at a better price. Both models incorporate soft seat valve material plus a precision machined "knife edge" orifice to provide a positive, tight shutoff.
Beyond its standard configuration, the 121 regulator has variations that can serve the following functions: zero governor (atmospheric regulator), differential regulator, back pressure regulator (relief valve), vacuum regulator, and vacuum breaker. The 121 is an external control regulator that can be used in commercial, industrial combustion, and distribution applications.