(40) The Mark 33 is a motor operated valve featuring the Jordan sliding gate seat and heavy-duty industrial motors for proportional (resistance), on-off, 4-20mA electronic control. Models include the Mark 33 in sizes 1/4” through 2” (DN8 through DN50), the high flow Mark 331/332 with Cv’s up to 70 (60.34Kv), and the Mark 39 with three-way body.
The Mark 33 delivers exceptional pressure drop capabilities due to the short stroke of the sliding gate seat which permits greater utilization of the motor torque output. Power is transmitted via a cam (instead of gears), allowing the valve to handle higher than usual pressure drop conditions. The 24 VAC 50/60 Hz Honeywell actuators are split-phase, capacitor-type enclosed in a gasketed die-cast ...
(56) The Mark 39 is a motor-operated three-way control valve that combines the performance and excellent shutoff characteristics of the Jordan sliding gate seat with the time-proven quality of the Honeywell industrial motor. Available for either diverting (Mark 39) or mixing (Mark 39MX) service, the Mark 39 utilizes two sets of seats to handle higher than usual pressure drops while maintaining ANSI Class IV shutoff.
