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Industrial Vacuum Valves Designed For Millions of Cycles 
No bellows or o-rings to wear
High Conductance From 25 Thru 50 mm
Ideal for Roughing and Vent Valve Applications


  • More than 5 million operations without maintenance.
  • Leak rate lower than 1x10-7 Std. cc/sec (Helium).
  • Pressure working range: From atmosphere to 1x10-5 Torr
  • Compressed air connection: From 75 to 100 PSI
  • Closing and opening speed < 250 milli seconds

  • MATERIALS: Valve body: Aluminum alloy

    Inner parts: Stainless steel and aluminum alloy with Buna seat

    Pneumatic actuator: Pneumatically operated valves with Special face seal. Vacuum-tight against the atmosphere.

    B50 with NW25 fittings on both sides - Pneumatic valve
    B70 with NW40 fittings on both sides - Pneumatic valve
    B80 with NW50 fittings on both sides - Pneumatic valve
    Click here for more information or call (407) 862-4643

    Contact LDS Vacuum with any questions:
    Phone (407)862-4643 via Fax (407)862-8723 or

    LDS Vacuum Products is a 100% woman owned company and
    certified Woman Owned Small Business (WOSB)
    The logos and/or trademarks appearing on this page are not owned by or registered to LDS but, rather, designate products sold by LDS, and are owned and/or registered to the manufacturers or suppliers of the products.
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    There is a global helium shortage. Each time an MRI is performed, helium is used. Please rethink your helium balloon purchase.