Vacuum 2WAY Pneumatic Ball Valve (SUS316, Single Acting)
Model: PVVP-02
PVVP-02 is a vacuum 2WAY ball valve combining a SUS316 3PC body with a pneumatic single-acting actuator. It supports sizes from NW16 up to NW100 (ISO) and undergoes 100% helium leak testing prior to shipment, and is used for fail-safe automatic shutoff of vacuum lines in semiconductor, display, solar, and laboratory processes.
Features
- Compact design for easy installation in confined spaces
- 3PC structure for easy installation and maintenance
- Internal oil removal (CLEAN AND OIL FREE)
- 100% helium leak tested
- Custom manufacturing available per customer needs
- Available in large sizes NW16-100 (ISO)
- First in Korea to apply ISO5211 Direct Mounting Pad
Frequently Asked Questions
- How is the fail-safe direction determined for single-acting?
- Single-acting automatically returns to Fail Close or Fail Open when pneumatic pressure is lost. Lines requiring chamber contamination prevention or hazardous gas shutoff use Fail Close; lines requiring maintained pumping connection use Fail Open. Determine the spring direction based on process hazard analysis (HAZOP) results.
- How do I choose between ball valves and bellows valves in vacuum lines?
- Ball valves are suitable for general gas and exhaust lines thanks to full-port design with low flow loss and fast operation. Bellows valves have the stem seal isolated from the atmosphere by a metal bellows, advantageous in high-vacuum and corrosive gas environments, but with complex structure and high price. Choose ball valves for general HV lines, bellows valves for high-vacuum and corrosive environments.
- What accessories can be attached to a pneumatic valve?
- We supply integrated packages combining various accessories to meet field requirements. Typical accessories include limit switch boxes, solenoid valves, and air filter regulators.
- What level of vacuum can it be used to?
- PVVP-02 is designed for automatic shutoff in the high vacuum (HV) range. The actual achievable vacuum varies greatly with chamber volume, pumping system, operating temperature, and gas type, and separate specification review is required for environments requiring UHV ranges.