Pass-Through Chambers for Cleanrooms

304 Stainless Steel (Model No. 6705-26)

Cleanroom Pass-Through Benefits

• Contamination-free transfer of materials in and out of the cleanroom
• Eliminates unnecessary personnel entry
• Full range of sizes meets any application
• Stainless steel doors extend service life of plastic and laminate chamber—a must in a production environment!
• Foolproof interlock mechanism prevents cross-contamination, is reliable and maintenance-free
• Material options accommodate many application requirements, from chemical resistance to static control to fire safety
• Accessories include LockLatch™, safety sprinkler, air shower, and Class 10 HEPA filter/blower module
• Easy to install

FirmLok™ Interlock: Clean, reliable operation

Shutting the Door on Contamination

304 Stainless steel or powder-coated steel pass-throughs ensure clean operation. For especially stringent particle requirements, select an UltraClean™ electropolished 304 stainless steel pass-through.

Polypropylene and PVC models are suitable for chemical pass-through applications, and Static-Dissipative PVC models combine excellent chemical resistance with a surface resistivity of about 10⁷ ohms/square for enhanced static and particle control. Each model features viewing windows of a compatible material.

Doors on either side are outfitted with a mechanical interlock that keeps personnel from passing particles through the chamber. This device allows only one door at a time to open, and thus the amount of air that can enter the cleanroom is restricted to a very small volume. The no-maintenance interlock has no power, gas, or other facility requirement, so it continues to operate when other systems shut down.

ULPA Filtered Air Shower Clears the Air!

This option incorporates a brushless motor and 125 CFM (212.5 m³/hr) variable-speed impeller to draw air from the "clean" side of the pass-through into an ULPA filter (rated 99.999% efficient with 0.12µm-diameter particles).

A magnetic sensor switch, installed on the "dirty" side door, activates the unit after the door has been opened and then closed. The shower washes the chamber with ULPA-filtered air to remove any contaminants that might have entered the chamber (the operation period is adjustable from 15 to 180 seconds). During operation, a red status light in the "cleanroom" side of the shower glows to warn operators not to open a door. When the shower shuts off, a green status light indicates that the door may be opened.

Exhaust air flows out of vents on the "dirty" side of the pass-through chamber (a microporous filter eliminates the chance of contamination in the event of a negative pressure). The cleanroom intake ensures a long filter life, and filter change-outs can be performed in a matter of seconds.

Cleanroom Pass-Through Installation