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Announcements


Thank you to everyone who took the time to attend our Battelle learning lab at the Battelle Chlorinated conference today. We appreciate your time and wonderful questions. #battelle2018 ... See MoreSee Less

Vapor Pin updated their cover photo. ... See MoreSee Less

Wonderful to see new and familiar faces at Association for Environmental Health and Sciences Foundation. Stop by and see us at booth 33. ... See MoreSee Less

Craig Cox, CPG will be presenting two posters during the Poster Sessions at the 28th Annual International Conference on Soil, Water, Energy, and Air. (Abstract numbers: 144 & 145) Come see the Mini-PinTM at booth 33! ... See MoreSee Less

#BBGroundgas18 Great opportunity to meet everyone at the Groundgas Conference today in London ... See MoreSee Less

Vapor Pin and our Europe distributor Ribble-Enviro will be exhibiting at the
Ground Gas 2018: Assessing and managing ground gas risk
Date: 01 March 2018 - Venue: Holiday Inn London - Kensington High Street, London, Wrights Lane W8 5SP
... See MoreSee Less

Enjoyed listening to Tony McDonald with AZ solutions talk about pilot test at the Southeastern States VI Symposium. ... See MoreSee Less

Soil Gas Control Systems in New Construction (CC-1000). This new standard addresses RRNC construction for virtually
every building that is larger than a one- and two-family
dwelling. https://aarst-nrpp.com/wp/store/rrnc-for-larger-buildings-cc-1000/
... See MoreSee Less

Great seeing everyone at last night's MSECA event. ... See MoreSee Less

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Main Content

Pressure Field Extension Testing


Using Vapor Pins® for Pressure Field Extension Testing
Vapor Pins® are widely used for Pressure Field Extension (PFE) tests of radon and vapor-mitigation systems. The PFE test (also called a “Suction Field Extension Test” or “Communication Test”) ensures that a sub-slab depressurization (SSD) system creates sufficient vacuum everywhere beneath a floor. PFE testing is essential for proper system design and installation, and periodic testing in subsequent years verifies that the SSD continues to operate within specified limits. A common approach to measuring subslab vacuum is to drill a hole in the slab, jam a manometer into the hole, and take a reading, while running a radon fan or shop vacuum at the suction pit. Unfortunately, it can be difficult to form a tight seal between the manometer and the slab, and the test hole cannot be left open for subsequent testing.

A better approach for PFE testing is to measure the sub-slab vacuum through a Vapor Pin®. The Vapor Pin® provides a tight seal against the slab, and with the Vapor Pin® Cap in place, prevents the loss of soil gas to indoor air. The Vapor Pin® can be left in place indefinitely for subsequent measurements, or removed and reused elsewhere. For radon testing, the Vapor Pin® can be reused by simply cutting off and replacing the silicone sleeve between holes. For vapor-intrusion use, the Vapor Pin® should also be decontaminated before moving it to a different location.

For conducting PFE tests during pilot testing, the Vapor Pin® can be installed in the stick-up configuration, which requires drilling a 5/8-inch diameter hole in the slab. If the Vapor Pin® will be left in place for subsequent testing, it is typically installed in the flush-mount configuration, so that it doesn’t pose a trip hazard. The flush-mount installation requires drilling a 1-1/2 diameter inch hole and a 5/8-inch diameter hole. The flush-mount Vapor Pin® may be covered with Cox-Colvin’s stainless steel Secured Cover, which reduces the risk of tampering, or a black plastic Flush Mount Cover, which is more economical. We recommend using brass Vapor Pins® for one-time use, such as pilot testing, and stainless steel Vapor Pins® if points will be left in place for subsequent testing.

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