Variable Leak Valve

The Agilent Variable Leak Valve includes a movable piston with an optically flat sapphire that meets a captured metal gasket. This forms a seal completely free from friction, seizing, and shear. The sapphire’s movement is controlled through a threaded shaft-and-lever mechanism that provides a mechanical advantage of 13,000 to 1. 

• For special purpose valve applications
• Range from Atmosphere to below 10-11 torr (mbar)
• Available with manual or air actuation
• No leak detectable on a helium mass spectrometer leak detector with sensitivity of 1 x 10-10 std cc/sec
• Maximum Flow Conductance 6 l/m
• Bakeable to 450º C

Description Part Number Shipping Weight kg (lbs) Sapphire-sealed variable leak valve and valve adjustment tools With 1 ¹/³ in. (NW16) CFF gas inlet 9515106 1.8 (4.0) Adapter kit, 1 ¹/³ in. (NW16) CFF-to-flare-fitting adapter kit 9515117 0.5 (1.0) Replacement gasket assembly 9535050 0.1 (0.3) Replacement sapphire assembly 9530072 0.5 (1.0) Sapphire removal tool SR0061417400 0.2 (0.5) Repair and tool kit includes fine screw assembly, handle, and collar adjusting knobs and spring driver assembly springs, sapphire assembly and gasket removal tool, brush, lubricant, 1 ⁄4 and 5 ⁄16 hex key wrenches and instruction manual 9620014 2.3 (5.0)