Description
- Model Number: EVR 116
- Manufacturer: Pfeiffer Vacuum
- Actuation Type: Electromagnetic (Solenoid)
- Seal Material: FKM (Viton)
- Nominal Diameter: DN 16 ISO-KF
- Pressure Range: 1 \times 10^{-8} hPa to 2,000 hPa
- Operating Voltage: 24 VDC (Typical, variant dependent)
- Closing Time: < 50 ms
- Service Life: Minimum 1 million cycles
- Leak Rate: < 1 \times 10^{-9} Pa m^3/s
The PFEIFFER EVR116 is a high-performance vacuum solenoid valve designed for rapid switching and reliable isolation within vacuum systems. This DN 16 ISO-KF flange compatible valve is normally closed and utilizes an electromagnetic drive to provide fast response times, making it ideal for venting, safety isolation, and process gas control. Its compact design and high-quality FKM seals ensure excellent chemical resistance and long-term vacuum integrity, even in demanding industrial and laboratory environments where low leak rates and frequent cycling are critical requirements.
Comparison with Similar Models
The EVR116 occupies a specific niche in the Pfeiffer valve lineup compared to other isolation solutions:
- EVR116 vs. EVP Series: The EVP series consists of piezo-electric proportional valves used for precise flow regulation. In contrast, the EVR116 is a binary (on/off) solenoid valve intended for total isolation or venting rather than variable flow control.
- EVR116 vs. AVC Series: The AVC series utilizes pneumatic actuation to open and close. The EVR116 is purely electromagnetic, which eliminates the need for a compressed air supply and simplifies installation in electronic-only control systems, though it is generally limited to smaller nominal diameters.
- EVR116 vs. AVC 016 PA: While the AVC 016 shares the DN 16 flange size, the EVR116 provides significantly faster closing times (under 50ms). This makes the EVR116 the superior choice for emergency shut-off applications where protecting the vacuum integrity from sudden pressure rises is the primary safety concern.
