|1||STAINLESS STEEL BODY||The all-SS housing is ideal for sanitary, pulp and paper, marine and a variety of other applications where corrosion-resistance is crucial.|
|2||HEAVY-DUTY PINION||The one-piece stainless steel alloy shaft has precision machined gear teeth for precise operations.|
|3||BEARINGS||Replaceable top and bottom PTFE pinion bearings ensure low friction, stability up to 400°F and corrosion resistance.|
|4||TRAVEL STOPS||Travel adjustment of +/- 4° is available on all models.|
|5||ACCESSORY MOUNTING||NAMUR and ISO mounting allows for the easy factory or field installation of solenoids, switches and positioners.|
|6||STAINLESS STEEL PISTONS||Durable, precision cast pistons provide full engagement with the pinion. Quality seals and guides provide high thrust stability with minimal friction.|
|7||NAMUR SHAFT||The slotted shaft, along with the NAMUR bolt pattern, allows for direct mounting of NAMUR standard switches and positioners.|
|8||ACTUATOR MOUNTING||ISO 5211 standard design provides direct mounting of most ISO pad valves, including FLOWX® valves.|
|9||SPRING CARTRIDGES||The heavy duty spring cartridges are designed for easy conversion of a double acting actuator to a spring return actuator, or to modify the torque output depending on air pressure.|
|10||SOLENOID MOUNTING||The PN-SS series actuator is designed for direct mounting of NAMUR solenoid valves without additional piping.|
DOUBLE ACTING ACTUATOR OVERVIEW:
•All listed output torques are expressed in inch pounds of torque (in. lbs.).
•Charts for available air pressure are expressed in pounds per square inch (P.S.I.).
•FLOWX® actuators offer ±4° adjustment in the open and closed positions on all models.
DOUBLE ACTING ACTUATOR SIZING:
1. Establish the valve manufacturer’s breakaway or seating/unseating torque, then add 20% as a safety factor (e.g. 115 in. lbs. valve breakaway torque x 20% = 138 in. lbs.).
2. Determine available air pressure to the actuator (e.g. 60 P.S.I.).
3. Refer to the chart, find the 60 P.S.I. column and scan down until a torque value greater than the valve torque is found (e.g. 141 in. lbs.). Then go to the left to determine the FLOWX® model number. In this sample case, the selected actuator would be the FLOWX-45DA. NOTE: The FLOWX® double acting actuator has no torque drop through the full 90º stroke.