Miyawaki Thermodynamic Steam Trap Type SD1, SU2N, SU2H
Miyawaki opened its doors in 1933 and began designing effective steam traps for industrial use. In 1949, after extensive experiments and tests, MIYAWAKI developed an entirely new type of steam trap, with a Duplex-type valve, a double-ported valve operating by the pressure differential to increase discharging capacity.