UNSPSC 41112513: Orifice plate

UNSPSC 41112513 Orifice plate (Commodity) covers precision flow measurement and calibration equipment that state and local governments procure to maintain laboratory standards and field monitoring networks. Recent solicitations show state environmental agencies and water utilities buying gas flow calibrators, mass flow terminals, zero air generators, and related sensor components—equipment deployed in air quality monitoring networks, wastewater operations, and environmental compliance labs. The code captures the hardware and instrumentation side of environmental testing rather than the consumable gasket or valve component the nominal code name suggests; the recent activity reflects calibration and verification equipment tied to EPA and NIST traceability requirements.

Environmental protection agencies dominate the recent issuing-body mix. The Texas Commission on Environmental Quality (TCEQ) Air Monitoring Division has posted multiple RFBs for calibration equipment (gas flow calibrators with ultrasonic flow cells, mass flow terminals serving as primary flow standards). The Illinois Environmental Protection Agency procured zero air generators through a sole-source BOA valued at $59,100.00. Water and wastewater districts follow: Eastern Municipal Water District (Riverside County, California) requested meter verification, calibration, and repair services through an RFP due July 15, 2026; the City of Tampa issued an Intent to Single Source for Yokogawa parts and service supporting wastewater operations; Riverside County issued an RFB for Cla-Val parts inventory. Recent opportunities span Texas (Austin, TCEQ facility), Illinois (Springfield), and California (Riverside County), with Texas showing the heaviest recent activity. The TCEQ Gas Flow Calibrators RFB (solicitation 5822615780, bids due July 7, 2026) exemplifies the current scope—four line items of Mesa Metrology calibrators with ultrasonic flow cells ranging 0.5–50,000 scc/min, F.O.B. destination, 60-day delivery, NIST traceability, and one-year warranty. The TCEQ Mass Flow Terminal RFB (solicitation 5822615424, bids due March 31, 2026) sought a Fluke Molbox2-A700K or equivalent serving as a primary standard for secondary equipment calibration, with stringent pressure and temperature measurement tolerances. Set-asides under Texas competitive preference and federal small-purchase procedures appear in some solicitations; Illinois employed sole-source justifications based on OEM proprietary components and EPA monitoring compatibility.