Fail-Safe Control Valve
Description
The ARIA is designed for 1.5 million cycles and can withstand ambient temperatures up to 150°F, with travel speeds at 12 seconds per inch (nine seconds for ¾-in. stroke valves). It's equipped with an electric spring fail-safe (when opened or closed), robust enclosures with IP67/NEMA 4X enclosure, watertight ½-in. NPT fittings, and has split range input capability for 1/3-2/3 high/low applications.
It's designed as either Spring-Fail-Safe upon Loss-of-Power, or as Fail-In-Place on Loss-of-Power, (model dependent.) The actuator is mounted onto the control valve via pillars and mounting base and attached via a yoke locknut. The actuator stem and valve stem are connected as well.
Specs
There are 4 models to choose from in the ARIA series:
- ARA Model: 3-Way, Flanged Steel Mix Valves; ½ to 2 in.
- ARB Model: 2-Way & 3-Way, NPT Threaded Bronze & SS Valve; ½ to 2 in.
- ARC Model: 2-Way & 3-Way, Flanged, Cast Iron Valves; 2-½ to 6 in.
- ARD Model: 2-Way, Flanged Steel Cage Valves; ½ to 2 in.
| Thrust/Force | 450 lb. |
|---|---|
| MAX Stroke | 1.3125 in. |
| Pillar distance, C to C | 4 in. |
| Weight, approx. kg 5.6 | 12.3 lb. |
| Stroke Speed | 12 sec/in |
| Approximate Height | 11 in. |
| Approx. clearance above to remove cover | 3.25 in. |
| Manual Override | Electrically via 2 push buttons |
| Overvoltage/Undervoltage | Engages Spring Fail, to Open or Closed (depending on model) |
| Loss of Control Signal | |
| Power Supply | 24V AC/DC/ optional wide-range power supply (100 to 240V AC) |
| Motor Protection | Electronic motor current monitoring with a safety cut-off |
| Duty cycle as per IEC 60034-1,8 | S2 30 min/S4 1,200c/h - 50% ED |
| Permitted ambient temperature | -4 to 140°F (-20 to +60°C) |
| Resolution | 200 Parts to full-scale stroke |
| Accuracy | ±0.1 mA or ±50 mV |
| Linearity | ±1.0% |
| Repeatability | ±0.2% |
| Internal fault monitoring | Thrust, set value, temperature, power supply |
| Binary control | 24 to 230V AC for Binary Positioning or ON/OFF service |
| Control Signal and Feedback | 0-20 mA, 4-20 mA, 0-10V, 2-10V, selectable (or split ranges) |
| Mounting position | Any position, except below horizontal |
| Conduit entries | Up to 3 each 1/2 NPT |
| Enclosure Rating | NEMA 4X/IP67 |
| Cover material | Polycarbonate |
| Gear case material | High-quality aluminum die casting, powder-coated (60 μm thickness) |
| Pillar material | Steel 1.4104 |