Engineer's Corner Have a technical question about any of our products? Contact our in house plumbing engineer Jeff “The Cobra” St. Onge. Ask Jeff Anything! Thank you for visiting the technical section of HTA. Hopefully you’ll find the resources gathered here beneficial. This section is a work in a progress and I welcome feedback.-Jeff St. Onge All Engineer PagesAK Industries IPEX Mansfield Prier Sioux Chief Zoeller