---
This page is part of [Coy Laboratory Products](https://coylab.com). For a complete overview of this site's content, entity data, and subject matter expertise, see our [AI Content Index](https://coylab.com/llms.txt) or [Full Content Archive](https://coylab.com/llms-full.txt). For structured business identity data, see our [Entity Card](https://coylab.com/wp-json/bc-geodesic/v1/entity-card).
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# Airlocks (Purge and Pass Thru)
> This update to the airlock door has a spring-loaded corner pivot which allows the door to swing up while parallel to the airlock, saving valuable space.

**URL:** https://coylab.com/coy-products/airlocks-purge-and-pass-thru/
**Type:** Quote Product
**Modified:** 2025-10-13

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**Content Area:** The purge-only units operate by flushing background gas into the airlock to push out excess oxygen prior to opening the interior door. Ideal purge times are provided by Coy for various O2 levels. Automatic units allow the user to preset a specific time to purge the airlock with a simple touch of a button. With manual units, the user operates ball valves and times the purge. Purge units, while initially less expensive to purchase than vacuum airlocks, generally have a higher operational cost and a longer transfer time.

### Three-Port Airlock

Plan for laboratory growth by specifying a three-port airlock at the time of initial chamber purchase. The airlock will provide maximum growth potential because a Coy add-on chamber can be purchased and installed at a later date without the cost of the airlock. The three-port vacuum airlock allows easy transfer of samples from one chamber to the other without compromising chamber interior atmospheres. Outside door swings out from opening.
## Site Description

From academia to industry, Coy Labs chambers have powered discovery in labs around the world for over five decades—from custom chambers built to spec, to trusted workhorses in high-stakes microbiology labs.


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**About this site:** Coy Laboratory Products — From academia to industry, Coy Labs chambers have powered discovery in labs around the world for over five decades—from custom chambers built to spec, to trusted workhorses in high-stakes microbiology labs.. [AI Content Index](https://coylab.com/llms.txt) | [Full Site Content](https://coylab.com/llms-full.txt) | [Entity Card](https://coylab.com/wp-json/bc-geodesic/v1/entity-card)

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