Globe Valves

A globe valve closes by lowering a disc straight down onto a seat ring, with flow forced to change direction as it passes through the body. That change in flow path is what gives the valve its throttling ability: unlike a gate valve, which is built for full-open or full-closed duty, a globe valve holds a stable position anywhere in between without the disc wearing unevenly. The tradeoff is a higher pressure drop across the valve even when fully open, since the flow never travels in a straight line.

NLS sources globe valves in two size ranges that follow two different standards. Small forged steel valves, typically 2 inches and under, are built to API 602, the standard covering compact bolted-bonnet valves for high-pressure, small-bore piping common on instrument and utility lines. Larger cast steel globe valves reference API 600 body and pressure-temperature practice, the same family gate valves are built to, since both share bolted-bonnet and flanged-end construction principles. Face-to-face and pressure-temperature ratings across both ranges follow ASME B16.34, so a globe valve dropped into a piping isometric matches its neighboring gate or check valve on centerline and rating without a special spool piece.

On Saudi projects, globe valves show up most on steam and condensate lines, boiler feedwater systems, and process lines where an operator needs to trim flow rather than just start or stop it, common in utility plant rooms and process skids on industrial and hospital infrastructure builds. Bonnet type (bolted, pressure-seal, or welded) and trim material (usually 13% chrome or stellite-faced for steam service) both depend on line temperature and the erosive or corrosive nature of the fluid, so NLS confirms trim spec against the line's service conditions before quoting rather than defaulting to a standard trim.

NLS quotes globe valves against a valve schedule, P&ID, or line list and returns pricing in USD. Small forged API 602 valves in standard trim generally source faster than larger API 600 cast valves, which are more often built to order once size, rating, and trim are confirmed, and carry a manufacturer-stated lead time on the quote.