Profile: ARNCO provides ducts, couplers, pull tapes, lubricants, chemicals, placing equipment, pressure pipes and more. We also offer a full range of pressure pipe for water, gas and sewer applications. We range in size from 6″ to 24″, Pressure-Guard™ is available in coils and sticks. Our Pressure-Guard™ water pipe is approved by the American Water Works Association and is NSF listed.