Easy Close All-Metal Angle Valve (Series 541)

VAT’s series 541 All-Metal Angle Valve is an isolation valve equipped with “hard on hard” sealing for ultra-high vacuum (UHV) and extreme high vacuum (XHV) applications. The robust design allows for an easy close mechanism, high conductance, and up to 300° C baking compatibility. This valve is ideal for isolation on pumping systems, intermediate pumping of gauge ports, gas handling in tritium systems, industrial applications, R&D, labs, and more.

Quick Features

  • High conductance
  • Sealing surfaces are only elastically deformed
  • Convenient operation with a standard hexagon wrench – no torque wrench required
  • FLEX VATRING exchangeable twice


Featuring VAT’s FLEX VATRING sealing, the valve utilizes a hard seal to ensure quality vacuum control into UHV and XHV ranges. The seal is easily replaced through the side and can be replaced up to two times due to three-level sealing seats.


Maintain Your Angle Valve

We offer a range of Series 251 Easy Close All-metal angle valve service kits to cover the needs of each 251 Series valve size to maintain your valve’s performance and functionality,