AN57D and AN57I for VE
The EPTA® AN57d and AN57i actuators pneumatically command the VE type control valves. It performs a modulating control or prints an on-off function on the valve, if the received signal is of that nature. For normal signals of 3-15 psi and 6-30 psi the AN57 actuator is reversible between NA and NC (AN57d and AN57i).
- Descripción
Descripción
| FEATURES | |
| Models | AN57i reversed action (NC)
AN57d direct action (NA) |
| Working Pressure Range | 3 to 15 psi(g). or 6 to 30 psi(g). |
| Temperature Range | From -20ºC to 65ºC. |
| Normal Characteristics | Direct Action – Actuator AN57d: (when the fluid servo pressure rises the stem spreads), spring return / pneumatic actuator to diaphragm and multiple spring with mounting yoke and guided stem for alternative movement. Reverse Action – Actuator AN57i: (When the fluid servo pressure decreases the stem spreads), spring return, pneumatic actuator to diaphragm and multiple spring with mounting yoke and guided stem for alternative movement. |
| Material of the Hood of the Diaphragm | Cast Aluminum |
| Diaphragm | Acryl Nitrile or Viton |
| Yoke | Cast Iron |
| Stem | Stainless Steel |
| Spring | Steel |
