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NAB Gate Valve Class 150 — Seawater RFQ
Updated 2026-10-30 · Supreme Valves India Engineering
Why NAB gates
C95800 nickel aluminium bronze is a proven seawater alloy for isolation valves where CF8M pitting risk is high and duplex pipe is not mandated.
Pair with NAB butterflies and checks on the same seawater train for a consistent material package.
RFQ essentials
Size, Class 150 RF ends, trim (NAB or SS), handwheel / gear, quantity, and destination port.
State seawater / chlorinated seawater / desalination brine if applicable.
FAQ
NAB or duplex gate?
NAB for traditional seawater; duplex when the pipe class is duplex.
Class 150 only?
Class 150 is most common; confirm if Class 300 seawater flanges are used.