Founded in 1853, Murdock Manufacturing is one of America's oldest hydration product makers, designing indoor and outdoor drinking fountains, bottle fillers, hydrants, and hand-washing stations. Based in City of Industry, California, the Morris Group International brand specializes in custom color-matching and durable stainless steel fixtures.
Established in 1972, NDS is the leading manufacturer of stormwater drainage, irrigation, and flow-management products in the Americas, having produced the industry's first plastic catch basin. Headquartered in Lindsay, California, it offers channel drains, catch basins, pipe, drip irrigation, and permeable pavers for residential and commercial sites.
Founded in 1904 and headquartered in Elkhart, Indiana, NIBCO is a privately held leader in fluid-flow solutions, producing valves, pipe fittings, and engineered flow-control systems. The company runs ten manufacturing plants across the U.S., Mexico, and Poland and offers more than 30,000 SKUs across plumbing, industrial, and municipal markets.
Established in 2001 and headquartered in Fountain Valley, California, Noritz America is the U.S. subsidiary of Japan's Noritz Corporation, the world's largest tankless water heater manufacturer. It specializes in residential and commercial gas tankless water heaters, combination boilers, and hybrid systems serving the U.S. and Canada.
Novo Water has manufactured residential and commercial water conditioning systems for more than 50 years, marketed as the top professional-plumber choice in North America. The brand offers water softeners, well-water systems, point-of-use and whole-home filters, reverse osmosis, and UV systems through plumbing wholesale channels.
NuvoH2O produces salt-free whole-house water softeners and filtration systems that use citric-acid-based chelation to prevent hard-water scale without sodium or wastewater. The Utah-based company sells DIY-friendly systems through major retailers including Home Depot and Lowe's, targeting homeowners seeking eco-friendly water conditioning.
Since 1956, nVent CADDY has supplied fixing, fastening, and hanging products for electrical, mechanical, datacom, plumbing, HVAC, and fire-sprinkler applications. Part of nVent Electric plc (HQ London with U.S. operations in Solon, Ohio), the brand is known for its iconic CADDY Man mascot and prefab support solutions.
Founded in 1910 and headquartered in Columbus, Ohio, Oasis International manufactures drinking fountains, bottle-filling stations, pressure and bottled water coolers, and dehumidifiers, with additional plants in Mexico, Ireland, and Poland. The company is owned by Culligan International and is a global leader in hydration solutions.
Oatey, founded in 1916 and headquartered in Cleveland, Ohio, manufactures rough plumbing products including solvent cements, primers, drains, toilet flanges, and DWV chemicals. The company is the parent of well-known brands like Hercules, Cherne, Dearborn, Harvey, Keeney, and QuickDrain, serving residential, commercial, and waterworks plumbing markets.
Omega Flex, founded in 1975 and headquartered in Exton, Pennsylvania, is a NASDAQ-listed (OFLX) manufacturer of corrugated flexible metal hose, braid, and stainless steel tubing. It is best known for TracPipe and TracPipe CounterStrike flexible gas piping (CSST) used in residential and commercial natural gas and propane installations worldwide.
Pacific Plastics, Inc. is a PVC pipe manufacturer founded in 1979 and based in Brea, California. The company produces a broad catalog of pressure, potable water, reclaimed water, sewer, drain, and electrical conduit PVC pipe, serving the Western United States and Northern Mexico from a single Southern California production facility.
American Plumbing Partsmaster, founded in 1980 and headquartered in Ontario, California, is a leading distributor of plumbing repair parts. The company supplies thousands of stems, cartridges, handles, toilet repair parts, and faucet parts from hundreds of original equipment manufacturers, serving wholesale plumbing suppliers across the Southwest.
PASCO Specialty & Mfg., Inc., founded in 1936 and headquartered in Lynwood, California (with operations in Curtis Bay, Maryland), is an employee-owned manufacturer and redistributor of "Smart Plumbing" specialty items. The company pioneered products like air pressure test gauges, dishwasher drain hoses, and vinyl shower pan liners.
Pioneer Industries, founded in 1985 and headquartered in Commerce, California, manufactures residential, commercial, and bathroom faucets and fixtures. The Pioneer family of companies includes the Pioneer (premium residential), Olympia (builder-grade), and Central Brass (commercial) brands, serving multi-family housing professionals, distributors, and homeowners.
Plumberex Specialty Products, founded in 1986 and based in Palm Desert, California, is the pioneer USA manufacturer of ADA-compliant under-sink pipe covers. Its Handy-Shield Maxx, Pro-Extreme, and Trap Gear product lines insulate exposed traps, valves, and supplies to meet ADA, ANSI A117.1, IBC, ASME, and ASTM C1822 accessibility codes.
Priority Wire & Cable is an electrical wire and cable manufacturer founded in 1993 and headquartered in North Little Rock, Arkansas. The company supplies aluminum and copper conductor wire, grounding products, fiber optics, generator cables, and flexible conduit through 21 North American distribution centers, serving commercial, industrial, utility, solar, and telecom markets.
Raypak, founded in 1947 and headquartered in Oxnard, California, is a leading manufacturer of copper-finned pool and spa heaters, commercial hydronic boilers, and water heaters. A subsidiary of Rheem Manufacturing, Raypak is widely recognized for the Avia/Nitek and Crosswind heat pump pool heater lines and the XVERS commercial boiler series.
RectorSeal, founded in 1937 and headquartered in Houston, Texas, is a wholly owned subsidiary of CSW Industrials that manufactures specialty chemicals and mechanical products for HVAC/R, plumbing, electrical, and firestop trades. Its flagship "RectorSeal No. 5" pipe-thread sealant remains an industry standard across the United States.
Red-White Valve Corp., founded in 1971 and headquartered in Lake Forest, California, manufactures brass, bronze, cast iron, stainless and carbon steel, and thermoplastic valves for plumbing, commercial/industrial, and HVAC markets. Acquired in 2003 by Italy's VIR, RWV is known for lead-free DZR valves and the 8000 Series hydronic installation valves.
Reed Manufacturing, founded in 1896 and headquartered in Erie, Pennsylvania, designs and produces premium pipe tools and vises for plumbing, mechanical, and utility trades. The family-owned manufacturer is renowned for its pipe cutters, wrenches, threaders, and bench vises engineered for professional pipefitting applications worldwide.
Reliance Worldwide Corporation (RWC), founded in 1949 and headquartered in Atlanta, Georgia (with roots in Brisbane, Australia), is a publicly listed manufacturer of water-flow and plumbing solutions. RWC is the world's largest maker of push-to-connect fittings and parents brands like SharkBite, Cash Acme, and HoldRite.
Rheem Manufacturing, founded in 1925 and headquartered in Atlanta, Georgia, is one of the world's largest producers of water heating and HVAC equipment. The privately held company offers residential and commercial tank, tankless, heat-pump and solar water heaters alongside air conditioners, furnaces, and pool/spa heaters.
RIDGID, founded in 1923 and headquartered in Elyria, Ohio, is a subsidiary of Emerson Electric that designs heavy-duty tools for plumbing and the professional trades. The brand invented the modern heavy-duty pipe wrench and is the industry standard for pipe threaders, drain-cleaning machines, press tools, and diagnostic inspection cameras.
Sani Seal LLC, founded in 2009 and based in Indianapolis, Indiana, manufactures the patented Sani Seal waxless toilet gasket. The flexible, antimicrobial polyurethane-foam bowl-to-flange seal is repositionable, eliminates traditional wax rings, and is distributed nationwide through Home Depot, Ace, Lowe's, and plumbing wholesalers.
SAS Safety Corp, founded in 1982 and headquartered in Cerritos, California, is a Bunzl PLC subsidiary supplying head-to-toe personal protective equipment. Product lines include respiratory, hearing, eye, hand and body protection, hi-viz traffic safety gear, coveralls, first aid kits, and spill-control supplies for industrial and automotive markets.