The KS Stainless Steel Middle Flange Gate Valve is a high-performance isolation valve designed for corrosive and high-purity applications. Unlike cast iron valves, this unit is manufactured from SCS13 stainless steel, ensuring it withstands aggressive media like nitric acid. The middle flange (bolted bonnet) design facilitates easy maintenance, while the rising stem mechanism offers clear visual indication of flow status. It is tested to KS B 2304 standards to guarantee safety and reliability.
Technical Specifications:
Pressure Class: 10K (Approx. 10 kgf/cm² / PN10)
Size Range: DN50 – DN200 (2″ to 8″)
Applicable Medium: Water, Vapor, Oil, Nitric Acid, and Corrosive Liquids
Operating Temperature: ≤ 150°C (Standard Range)
Main Parts and Materials:
Parts Name
Materials
Body, Bonnet
SCS13
Disc
SCS13
Stem
STS304
Packing
PTFE
Key Product Features:
Corrosion-Resistant Construction: Made from SCS13 (SS304) stainless steel, providing excellent resistance to rust and chemical corrosion for long service life.
Rising Stem Design (OS&Y): The stem rises as the valve opens, providing a clear visual indication of the valve position for operational safety.
Middle Flange Bonnet: The bolted bonnet design allows for easy disassembly and maintenance of the internal trim without removing the valve body from the line.
PTFE Stem Packing: High-quality PTFE packing ensures a tight seal around the stem, preventing leakage and reducing friction for smooth operation.
KS Compliance: Manufactured and tested in strict accordance with KS B 2361 and KS B 2304 standards for industrial valve safety.
Applications:
Ideal for Chemical Processing, Marine Applications, Pharmaceutical Manufacturing, and Food & Beverage industries. Specifically suited for pipelines carrying nitric acid, seawater, or other corrosive liquids where standard cast iron valves would fail.
The valve consists of a body, bonnet, gate, stem and handwheel. Turning the handwheel raises or lowers the stem, which moves the gate in a straight line perpendicular to the flow to open or close the valve.