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Obsolescence watch: 4810 Valves, Powered

Stock numbers the government still buys whose supply base is thinning. Each one carries the reasons in plain words: the government's own terminal codes, approved sources whose SAM registration has expired, a single source, a registration about to lapse, years of solicitations without an award. A source we cannot verify in SAM is shown as unverified, never counted as gone. Rebuilt nightly; this list is from 2026-09-29.

240

High risk

5,173

Elevated

20,743

Watch

7,351

With an open solicitation now

4 stock numbers at high risk

NSNItemRiskWhySourcesLast awardOpen
4810-01-320-1227Valve,SolenoidHigh 75single approved source, and its SAM registration has expired; solicited in the last 12 months; last award Dec 2020; AMSC H on the latest solicitation: only approved sources may supply10 active · 1 expired · 0 unverifiedDec 2020$4,540.001 in 12 m
4810-01-523-3237Servovalve,HydraulicHigh 75single approved source, and its SAM registration has expired; solicited in the last 12 months; last award Feb 2016; AMSC H on the latest solicitation: only approved sources may supply10 active · 1 expired · 0 unverifiedFeb 2016$4,901.461 in 12 m
4810-01-436-5518Valve,BallHigh 68AAC X: semi-active, no procurement planned; single approved source (registered in SAM); solicited in the last 12 months; last award Apr 2017; AMSC L on the latest solicitation: only approved sources may supply11 active · 0 expired · 0 unverifiedApr 2017$2,392.831 in 12 m
4810-01-373-2652Valve,SolenoidHigh 62every approved source we can verify in SAM has expired (1 of 2; 1 unverified); solicited in the last 12 months; last award Jan 2015; AMSC D on the latest solicitation: only approved sources may supply20 active · 1 expired · 1 unverifiedJan 2015$56.621 in 12 m

Have one of these on the shelf, or can you make it? List it free and the solicitation lands on your dashboard the morning it posts. Buyers: every NSN page shows the same read with the full source list.