Vanderlans & Sons manufactures Lansas products for the water pipeline market. The company offers a complete line of test and flow-thru plugs, joint testers, plumbing products, vacuum testing equipment and accessories. It also develops custom designs for clients. Vanderlans & Sons supplies domehead, interchange, disc and mechanical plugs. The company produces line acceptance, portable leak locator and air testing trailer units. It features pumps and test heads for manhole applications. Vanderlans & Sons line of accessories includes protective sleeves, adapters, hoses, gauges, fittings, hand pumps and spare parts. The company has operated for more than 40 years and is based in Lodi, Calif.