Pipeline Products manufactures an enclosure for all needs, including air/vacs to blow offs, back flows to check valves and water test stations. Cover and protect an investment with powder-coated steel or the exclusive line of poly-enclosures. If mild steel or 304/316 stainless steel is needed, Pipeline can build it. For above-grade or below-grade applications, the company’s standard sizes accommodate 1- to 4-in. valves.