"> Nakakita Seisakusho (Japan) Marine Butterfly / Gate Valve
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Nakakita Seisakusho (Japan)

Marine Butterfly / Gate Valve

Nakakita Seisakusho is a Japanese marine valve manufacturer from Osaka and one of the largest suppliers of cargo valves for Japanese and Korean tanker newbuilds. Marine butterfly valves are standard on tanker cargo lines, gate valves for isolation positions.

DN 50-600 mm, PN 10-40
Capacity
Crude Oil / Product Oil / Chemicals / Seawater
Medium

Components & Design

Component data being added…

Technical Data

type Marine Butterfly Valve / Gate Valve
variant count approx 6
period start year 1960
drive type Manual / Hydraulic / Pneumatic / Electric Actuator
construction Cast steel/stainless steel, PTFE/EPDM seat, marine-certified

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Common failures & inspection points

●Seat wear causing leak after 10,000+ cycles
●Actuator failure from corrosion/hydraulic leak
●Stem packing leak
●Body erosion from abrasive cargo
●Disc (butterfly) edge erosion

Service & Maintenance

Seat leak test annually. Actuator function test quarterly. Stem packing adjustment annually. Body wall thickness measurement at drydock (5 years).

Suppliers & Spare Parts

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Replacement Parts

Nakakita (Osaka, Japan). Lead time: 3-5 weeks Asia. Standard valve bodies and seats.
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Equipment Model #38002 · ✓ still in production