Chemtron Tube-Turns T-Bolt Closure Dual Vacuum Pot Chamber 12" & 17" 100 PSI

Chemtron Tube-Turns T-Bolt Closure Dual Vacuum Pot Chamber 12" & 17" 100 PSI

This is a dual-station vacuum pot chamber system built around Tube-Turns T-Bolt Closures, manufactured by the Tube Turns Division of Chemetron Corporation in Louisville, Kentucky. The system comprises two vacuum vessels mounted on a heavy-duty steel worktable, each sealed by Tube-Turns T-bolt quick-closure lids with BUNA O-ring seals. Each lid is counterbalanced by a cable-and-pulley lift mechanism mounted on vertical steel posts, allowing the heavy domed lids to be raised and lowered safely. An integrated control panel is mounted on the table surface between the two chambers, housing two calibrated pressure gauges (0–150 PSIG), control knobs, and a toggle switch. An extensive copper-and-flexible-hose plumbing system is routed beneath the table, including a brass pressure regulator and a fill/drain switch on the table frame.

Specifications & What's Included

• Manufacturer: Tube Turns Division, Chemetron Corporation, Louisville, KY
• Closure Type: Tube-Turn T-Bolt Closures (patent no. 3,187,929)
• O-Ring Material: BUNA
• Left Chamber: 12" diameter x 4" tall interior, 9.75" diameter lip
• Right Chamber: 17" diameter x 6.5" tall interior
• Maximum Working Pressure: 100 PSI
• Maximum Temperature Rating: 104°F
• Factory Hydro Test: 150 PSIG (stamped TC-001, dated 6A70)
• Pressure Vessel Class: 75
• Part Number (stamped): P6669 / Tube-Turns Serial No. 4105
• Overall Dimensions: 60" x 30" x 63" tall
• Approximate Weight: 580 lbs
• Lid Lift: Cable-and-pulley counterbalance system on steel uprights, one per chamber
• Control Panel: Integrated black panel with 2x pressure gauges (0–150 PSIG, TT Electronics calibrated 12/2015), knobs, and toggle switch
• Plumbing: Copper tubing, flexible hose, brass regulator, and valves routed under table
• Fill/Drain Switch: ON/OFF rotary switch on table frame
• Both T-bolt closure hardware sets present and intact
• Special freight shipping required — contact us for a quote or to arrange local pickup

Applications

Tube-Turns T-Bolt Closures are a long-established quick-opening pressure vessel closure design used across industrial, laboratory, and process applications where frequent access to a pressurized or evacuated vessel is needed without full disassembly. The T-bolt design allows the domed lid to be secured or released quickly by tightening or loosening the circumferential T-bolts, making it practical for repeated cycling. This dual-chamber configuration — with two vessels of different sizes sharing a single integrated control and plumbing station — is typical of systems used in vacuum potting, vacuum impregnation, encapsulation of electronic assemblies, or resin infusion processes, where parts are placed under vacuum to draw out air before a liquid compound is introduced. The integrated pressure gauges and fill/drain plumbing suggest the system was set up for a combined vacuum-and-pressure cycle process. Tube Turns was a division of Chemetron Corporation, a major mid-20th-century industrial manufacturer; the 1970 factory test date (stamped 6A70) places this system in the early 1970s, though T-bolt closure vessels of this type remain in use in specialty industrial and laboratory settings today. Buyers interested in vacuum potting of electronics, composite layup, or resin impregnation applications may find this type of dual-station system useful for running two different batch sizes side by side.