Valves and fittings for shipbuilding and marine
Seawater pits standard stainless steel and strips zinc from brass. On ballast, bilge and cooling systems, material choice decides service life.
- Pressure
- Low to medium
- Temperature
- Ambient
- Media
- Seawater, ballast, bilge, fuel
- Critical need
- Chloride resistance
What makes this service hard
The conditions that decide which valve, material and seal will last.
Chlorides
Seawater attacks 304 stainless and many brasses. Bronze, suitable stainless grades or lined valves last longer.
Space and weight
Lug butterfly valves save weight and space on large ballast and cooling lines.
Pump protection
Y-strainers ahead of pumps catch debris drawn in with seawater.
Typical items for shipbuilding & marine
A starting point. Send your line list and we’ll match each item to your piping class.
- Lug butterfly valves for ballast and cooling lines
- Bronze and suitable stainless valves for seawater
- Y-strainers ahead of pumps
- Rubber expansion joints on pump connections
- Corrosion-resistant fasteners
- Flanges and gaskets for marine piping
Product ranges for this industry
Ball & butterfly valves
Floating and trunnion ball valves, wafer and lug butterfly valves, actuators and solenoids.
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Industrial valves
Gate, globe, check valves and Y-strainers in cast steel, forged steel, stainless, cast iron and brass.
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Fittings & flanges
Butt-weld and forged fittings, flanges, gaskets and stud bolts in matching class.
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Expansion joints
Rubber and metallic bellows joints for thermal movement and pump vibration.
View rangeCommon questions
Can I use 304 stainless in seawater?
We do not recommend it. Chlorides cause pitting in 304. Bronze, suitable higher-alloy stainless or lined valves are better choices.
Do you supply for ship repair as well as new builds?
Yes. Send us the nameplate photos or old valve details and we will quote direct replacements.
Send your list.
We’ll price every line.
Send an MTO, a spec sheet or a nameplate photo. You get an itemized quotation within 24 hours, with stock and import lead times marked.