UNSPSC 31163000: Couplings

UNSPSC 31163000 Couplings is a Class code covering fastening and joining components for water and sewer infrastructure, drainage systems, and mechanical assembly. State and local governments procure couplings as part of comprehensive materials contracts for water distribution, meter assembly, pipe installation, and system maintenance—both as discrete line items in larger supply agreements and as components within integrated water or wastewater system projects. The issuing bodies span water utilities (city and county water departments), regional cooperative purchasing programs, and special-purpose utility authorities, with water agencies dominating recent solicitation activity. Couplings appear most frequently bundled with gate valves, flanges, bypass spools, elbows, clamps, and other fittings in consolidated materials contracts rather than as standalone procurements.

Recent activity concentrates in California, Georgia, Florida, Massachusetts, and Arizona, with the most visible procurement patterns in California (Santa Clara County pavement and utility work), Georgia (Gwinnett County water equipment, Franklin County booster pump station, Technical College System HVAC), Massachusetts (Berkshire Regional Group Purchasing Program cooperative purchase for 32 municipalities), and Florida (Volusia County water and sewer materials). Representative opportunities include the Berkshire Regional Group Purchasing Program's FY27-04 Culvert Products cooperative purchase (April 2, 2026 IFB deadline) on behalf of 32 Berkshire County municipalities with pre-qualification by MassDOT required; the City of Phoenix Water Services Department's IFB-26-0217 for water pipe and miscellaneous fittings including couplings (February 19, 2026 sealed-offer deadline, five-year contract commencing May 1, 2026); and Volusia County's Invitation to Bid #26-B-42LS for materials for water and sewer operations including stainless steel repair clamps and related components (February 4, 2026 electronic submission deadline). Insurance, compliance with AWWA and ANSI standards, and prevailing wage or federal Davis-Bacon requirements appear consistently across these opportunities.