Sigma Corporation manufactures ductile iron compact fittings, mechanical-joint fittings, and waterworks accessories for municipal water and wastewater systems. The brand serves utility contractors and water districts across the U.S.

Slant/Fin manufactures hydronic baseboard heating, fin-tube convectors, residential boilers, and humidifiers. Its Fine/Line baseboard is a longtime standard for hot-water heating in homes and small commercial buildings.

Sloan Valve Company manufactures commercial flushometers, sensor-operated faucets, sinks, and water-saving plumbing products for institutional restrooms. Its Royal flushometer is the de facto standard for commercial public restrooms.

Jay R. Smith Manufacturing produces commercial plumbing drainage products including floor drains, cleanouts, roof drains, interceptors, and trench drains. The brand serves plumbing engineers on commercial, healthcare, and educational projects.

Stiebel Eltron is a German manufacturer of tankless electric water heaters, heat-pump water heaters, and heat pumps for space heating. Its Tempra and Accelera lines are widely specified in homes seeking efficient point-of-use or whole-home electric hot water.

Supco (Sealed Unit Parts Company) supplies HVAC and appliance replacement parts including capacitors, motors, hard-start kits, refrigerator parts, and meters. Its catalog covers nearly every legacy and current OEM equipment brand.

Swan, owned by The Swan Corporation, produces solid-surface bath and kitchen products including shower walls, tub surrounds, vanity tops, and laundry tubs. Its solid-surface and AcrylX product lines compete with cultured marble and tile alternatives.

System Sensor, a Honeywell brand, makes commercial fire-detection devices including smoke detectors, heat detectors, duct detectors, and notification appliances. Its products are core components of building fire-alarm and life-safety systems.

T&S Brass and Bronze Works manufactures commercial-grade faucets, pre-rinse units, and plumbing fittings for foodservice, healthcare, and institutional applications. Its B-series faucets and pre-rinse spray valves are workhorse fixtures in commercial kitchens.

Taco Comfort Solutions manufactures hydronic heating components including circulators, zone valves, expansion tanks, and air separators. Its 007 circulator is one of the most-installed pumps in residential hydronic heating in North America.