IMPA: 750821

Marine Cast Iron Gate Valve – 10 kgf/cm² (IMPA 750821)

This marine-grade cast iron gate valve is designed for shipboard isolation applications within pumping and piping systems. It is rated for a working pressure of 10 kgf/cm² and delivers dependable shut-off performance in fresh water, seawater, ballast, and other maritime fluid lines. The cast iron body provides robustness in demanding marine environments while remaining economical for fleet-wide replacement and maintenance.

Engineered to comply with IMPA 750821 specifications, this gate valve features a full-bore flow path that minimizes pressure drop when fully open, and a flanged or threaded end configuration for versatile installation. The 10 kgf/cm² pressure class makes it suitable for auxiliary shipboard lines such as cooling water, fire main, and bilge systems. A non-rising stem design is available for space-constrained installations.

Key Features

Technical Specifications

Working Pressure10 kgf/cm² (142 psi)
Body MaterialCast Iron
Disc / Seat MaterialCast Iron / Bronze
Size RangeDN50 – DN300 (2" – 12")
End ConnectionFlanged / Threaded / Butt-weld
OperationHandwheel, non-rising stem
Suitable MediaFresh water, seawater, ballast, air
Applicable StandardsISAI 750821, ISO 5208 (leakage class)

Frequently Asked Questions

What is the maximum working pressure of this gate valve?

This gate valve is rated for a maximum working pressure of 10 kgf/cm², equivalent to approximately 142 psi. It is designed for low-to-medium pressure shipboard systems.

Is this valve suitable for seawater service?

Yes, the cast iron body design provides good corrosion resistance in seawater applications. However, for permanent seawater exposure or aggressive fluids, we recommend consulting our technical team for material compatibility.

What sizes are available?

This gate valve is available in nominal diameters from DN50 to DN300 (2" to 12"). Other sizes and custom end connections may be available upon request.

Does the valve come with a rising stem or non-rising stem?

We offer both configurations. The standard model features a non-rising stem, which is ideal for installations with limited vertical space. A rising stem version can also be provided.

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