UNSPSC 41103325: Visual fluid flow apparatus

A type of device that enables to see the fluid flow with the bare eyes. Clear pipes are made in several units and let the fluid to flow inside for many experiments of flow velocity, pressure, flux and others.

UNSPSC 41103325 Visual fluid flow apparatus, a Commodity code, encompasses flow measurement, calibration, and monitoring equipment that state and local governments procure for water treatment, wastewater management, environmental monitoring, and industrial process control. Recent opportunities show procurement of clamp-on flow meters, ultrasonic level sensors, gas flow calibrators, atmospheric monitoring instruments with flow detection capabilities, and integrated process instrumentation systems. Issuing bodies include municipal water utilities and treatment authorities (City of Tampa Water Production Division, Eastern Municipal Water District, City of Phoenix Water Services Department), county environmental and waste management agencies (Collier County Water and Wastewater Facilities, Dane County Waste + Renewable, Solid Waste Authority of Palm Beach County), and state environmental regulators (Texas Commission on Environmental Quality Air Monitoring Division). Water and wastewater treatment facilities represent the dominant customer segment, where flow apparatus function as critical control and compliance infrastructure integrated with SCADA systems and permit monitoring requirements.

Recent activity concentrates in Florida, Texas, California, Wisconsin, and Arizona. Representative opportunities include the City of Tampa's sole-source procurement of Emerson-Flexim clamp-on flow measuring devices from CL2 Solutions (ISS 26X01679, response deadline August 26, 2026, estimated cost $30,000), Collier County's single-source award to Gilson Engineering Sales, LLC for Siemens MultiRanger ultrasonic level controllers and flow meters for water and wastewater facilities (PUR17875, challenge period closed October 1, 2026, three-year term), the Texas Commission on Environmental Quality's competitive bid for Mesa Labs gas flow calibrators (RFB 582-26-15780, bids due July 7, 2026), the City of Phoenix Water Services Department's IFB for atmospheric monitoring instruments with hazardous-gas detection and flow measurement capabilities across lift stations and confined spaces (IFB-27-0435, offers due September 4, 2026, five-year term with DBE-N participation requirement), and Eastern Municipal Water District's RFP for meter verification, calibration, and repair services (RFP3856, proposals due July 15, 2026). Sole-source and single-source procurements dominate, reflecting the installed-base dependence on manufacturer-specific control systems and the integration requirements within existing facility infrastructure.