Bolt these fittings onto your ultra-high-vacuum chamber to transfer liquids and gases inside. Also known as feedthroughs, they come assembled with a flanged (CF) fitting, metal tubing, and two Yor-Lok tube fittings. Their bolt-together connection forms the tightest seal of any fitting type, so you can use them in semiconductor manufacturing, surface analysis experiments, and even research with particle accelerators. Made of stainless steel and copper, these fittings resist rusting. These fittings are not for use in pressure applications.

To complete the flanged connection, you’ll need a gasket and bolt kit (each sold separately). The Yor-Lok fittings on each end include a nut and two sleeves that grip your system’s stainless steel tubing.

Built to handle the extreme cold of liquid gases, these bronze valves are ideal for liquid carbon dioxide carbonation systems, liquid nitrogen coolant systems, and other cryogenic applications. They’ll also work with liquified natural gas and liquid oxygen. They’re cleaned and bagged to meet CGA G-4.1 for oxygen service. Also known as gate valves, they open and close gradually with multiple turns of the wheel handle to prevent sudden starts and stops.

The handle raises as these valves open and lowers as they close. At a glance, you can see if flow is on or off. The stem is isolated from what’s flowing through your line, giving these valves a longer lifespan than valves with a nonrising stem. They have a threaded union stem housing, so you can separate the stem from the housing while the valve is inline. That means you can complete maintenance tasks, such as packing the stem, without taking apart your whole setup.