Vacuum, Low/High Temperatures [Classic 21 Series] 2171B5905Z

- Poppet construction for high dirt tolerance
- ROSS vacuum valves have larger orifices, allowing greater flow and easing the transport of air even though there is a small differential between the vacuum within the valve and atmospheric pressure outside the valve
- Can be mounted close to actuator, reducing length of pipe to be pressurized/exhausted on each cycle
- Internal/external pilot supply
- Near zero leakage
Product Information
| Valve Type | Directional Control | 
| Series | 21 | 
| Application | Vacuum | 
| Actuation | Electrical | 
| Function | 2/2 Single Solenoid | 
| Default Position | Normally Closed | 
| Return | Spring | 
| Thread Type | NPT | 
| Inlet Pipe Size | 3/4 | 
| Outlet Pipe Size | 3/4 | 
| Construction | Poppet | 
| Mounting | Inline | 
| Connection | Hardwired | 
| Pilot Type | Internal/External | 
| Manual Override | Non-locking | 
| Size | 3/4 | 
| Cv (1-2) | 7.8 | 
| Voltage | 110/120 VAC | 
| Duty Rating | Continuous Duty | 
| Power Consumption | 87 VA inrush, 30 VA holding on 50 or 60 Hz | 
| Ambient Temperature | -40 to 120 F (-40 to 50 C) | 
| Ambient Temperature (Celsius) | -40 to 50 | 
| Media Temperature | -40 to 175 F (-40 to 80 C) | 
| Media Temperature (Celsius) | -40 to 80 | 
| Fluid Media | Filtered air | 
| Operating Pressure | Vacuum to 150 psig (vacuum to 10 bar) | 
| Operating Pressure (bar) | Vacuum to 10 | 
| Pilot Supply Minimum | Equal to or greater than inlet pressure | 
| Length | 4.45 in (113 mm) | 
| Length (mm) | 113 | 
| Width | 3.15 in (80 mm) | 
| Width (mm) | 80 | 
| Height | 7.80 in (198 mm) | 
| Height (mm) | 198 | 
| Weight | 3.3 lb (1.5 kg) | 
| Weight (kg) | 1.5 | 
| Valve Body Material | Aluminum | 
| Poppet/Spool Material | Aluminum and Stainless Steel | 
| Seal Material | Fluorocarbon | 
