Engineered Ball Valve for the U.S. Navy Since 1990
NSM Inc. dba Cornerstone Valve — design to manufacture, Made-in-America ball valves for naval shipyards, defense agencies, and critical infrastructure. WOSB · MBE · ISO 9001:2015 · CAGE 8H6L1
Fit-for-Purpose Severe-Service Ball Valves
Every valve is engineered to the application — not pulled from a catalog. We design, manufacture, and qualify severe-service ball valves for the most demanding naval and defense environments.
Fit-for-Purpose Design
Custom-engineered to exact application requirements — pressure class, temperature, media, and installation envelope.
Made in America
All manufacturing performed in the United States, supporting domestic supply chain requirements for defense procurement.
Wide Metallurgy Range
Carbon steel, stainless, duplex, Monel, Inconel, and exotic alloys — matched to service conditions and MIL-SPEC requirements.
Small-Quantity & Prototype Runs
Responsive to low-volume defense orders and prototype qualification programs where large OEMs decline to bid.
Shock & Vibration Tested to Naval Standards
Cornerstone Valve products are qualified to the same MIL-SPEC test regimes required for shipboard and airborne defense applications.
Trusted by the U.S. Defense Industrial Base
A Track Record Built on Performance
NSM Inc. founded in Houston, TX — begins supplying severe-service valves to the U.S. Navy.
ISO 9001 certification achieved; quality management system formalized for defense procurement.
WOSB and MBE certifications obtained; CAGE code 8H6L1 registered in federal systems.
MIL-S-901D and MIL-STD-167-1 qualification testing completed for shipboard valve product line.
SAM.gov registration renewed; CMMC Level 1 compliance implemented for DoD contracts.
NAVSEA valve delivered — latest in 35 years of continuous U.S. Navy program support.
SAM.gov Active — Ready to Source
Identity
NAICS Codes
PSC Codes
Ready to Source a Severe-Service Valve?
Send us your spec sheet, drawing, or NSN. We respond to RFQs within one business day.
Missouri City, TX 77489 · (281) 880-8188 · [email protected]