UNSPSC 40141666: Diaphragm control valve

A diaphragm valve is a type of valve that uses a flexible diaphragm to regulate the flow of fluid. The diaphragm valve is also known as a membrane valve.

UNSPSC 40141666 Diaphragm control valve is a Commodity code that spans water utility valve procurement—including detector check valves, resilient gate and tapping valves, butterfly valves, slide gates, and resilient seat gates sourced by water districts and county water authorities for treatment plants, pump stations, and distribution system infrastructure. State and local water utilities dominate activity under this code, with Gwinnett County, Georgia appearing repeatedly across multiple solicitations for valves of varying types and sizes, alongside regional water districts in California and Georgia. The procurement vehicles are predominantly IFBs, RFQs, and informal written quotations with response windows typically between three and fourteen days, reflecting commodity-level purchasing patterns for critical infrastructure replacement and maintenance.

Activity concentrates in Georgia and California. Gwinnett County has posted at least six separate valve procurements since January 2026, including resilient seat gates, MJ resilient valves, RBX kits and valves, butterfly valves for filter plants, 108-inch slide gates, and swing check valves for water resources centers. Alameda County Water District in California has issued at least three solicitations for detector check valves, gate valves, and CLOW gate valves since January 2026. The Douglasville-Douglas County Water and Sewer Authority in Georgia, Eastern Municipal Water District in Riverside County California, and regional authorities in Washington state (through Sourcewell) round out recent issuers. Representative recent opportunities include Gwinnett County's purchase of 60 resilient seat gate valves in sizes 6 to 10 inches (IWQ 128182, due April 3, 2026), Alameda County Water District's procurement of 24 CLOW 6-inch gate valves (RFQ 252618, due January 30, 2026), and the Douglasville-Douglas County Water and Sewer Authority's invitation for bids on fire hydrants and gate valves on an as-needed basis for the period June 1, 2026 through May 31, 2027 (IFB 321, due April 29, 2026). Most solicitations do not disclose estimated award values and typically require three references for similar projects, delivery to warehouse facilities on F.O.B. Destination freight prepaid terms, and compliance with county ineligible source list restrictions where applicable.