Stainless Steel Ball Valves

316 stainless steel ball valves for corrosive media, marine environments, food and beverage processing, pharmaceutical, and high-purity applications. The molybdenum content in 316 SS provides superior resistance to chlorides and aggressive chemicals that would attack brass or 304 stainless. Four series cover every configuration — 1-piece standard port, 2-piece full port in 1000 PSI and 2000 WOG ratings, and 3-piece light-duty — available from 1/4" through 4", with PTFE seats and blow-out proof stems throughout.

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The highest price is $1,135.99
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1-Piece Standard Port (949101–949108, 1/4"–2", 1,000 PSI WOG) — Single-body construction with a reduced-bore port. The compact, lower-cost choice for tight-clearance installations, instrumentation isolation, and moderate-flow process lines where full-bore ID is not required.

2-Piece Full Port 1000 PSI (949161 series, 1/4"–4", 1,000 PSI WOG) — Our highest-volume series. The two-piece midline split allows field-replaceable seats; full-bore ID eliminates turbulence and pressure drop. Suitable for general industrial, chemical, food-grade, and corrosive-media service.

2-Piece Full Port 2000 WOG (949171–949178, 1/4"–2", 2,000 PSI WOG) — Same full-bore design as the 1000 PSI series, built to a heavier pressure class with thicker body walls and reinforced stem packing. The right choice for hydraulic cooling lines, high-pressure chemical injection, and applications subject to pressure surges above 1,000 PSI.

3-Piece Light Duty (949270–949280, 1/4"–4", 1,000 PSI WOG) — Three-piece bolted construction allows in-line center-body removal for seat inspection and replacement without disturbing the pipeline. Popular in process piping, cleanrooms, and any service requiring scheduled maintenance access.

Use stainless ball valves anywhere your media is corrosive, the installation is near saltwater, or the application demands a cleanable valve with no metal leaching. For general water, air, and gas service where corrosion is not a concern, our lower-cost brass ball valves cover most applications. For chemical feed lines at lower pressures, see our PVC ball valves.

Frequently Asked Questions

When is 316 stainless steel worth the higher cost over brass?

316 SS is the right choice when your media is corrosive, chlorinated, or contains chemicals that would attack brass — including seawater, brine, dilute acids, caustics, bleach, and many industrial process fluids. The molybdenum in 316 SS resists pitting and crevice corrosion that destroys 304 SS and brass in these environments. For food-grade, pharmaceutical, or hygienic service where metal leaching is a concern, 316 SS is also the industry standard. See our CF8M Stainless Steel Guide for a detailed breakdown.

What is the difference between 1000 WOG and 2000 WOG stainless valves?

Both are 316 SS full-port ball valves, but the 2000 WOG series uses a heavier body wall and reinforced stem packing to handle pressures up to 2,000 PSI — twice the rating of the 1000 PSI series. Choose the 2000 WOG valve for high-pressure chemical injection, hydraulic cooling circuits, or any system where surge pressures can exceed 1,000 PSI. The 1000 PSI series covers the vast majority of industrial process, HVAC, and chemical service applications.

What is the practical difference between 1-piece, 2-piece, and 3-piece stainless ball valves?

A 1-piece valve is assembled as a single body — compact and economical but not field-serviceable without replacing the whole valve. A 2-piece valve splits at the midline, allowing seat replacement in the field without removing the valve from the line. A 3-piece valve has a removable center body so you can pull the trim (ball and seats) for inspection or cleaning while the end connections stay in the pipeline — ideal for scheduled maintenance applications. For most industrial service, 2-piece full-port is the standard choice; 3-piece suits processes requiring frequent access.