NACE MR0175 Swing Check Valve, API 6D, A216 WCB, 12 Inch, RF

The NACE MR0175 Swing Check Valve is a high-quality industrial valve designed for reliable performance in demanding applications. It features a cast carbon steel body made from ASTM A216 WCB material, ensuring durability and strength. The valve has a 12-inch diameter (DN300) and is rated for a pressure class of 150 LB (PN20), making it suitable for a wide range of operating pressures. Its RF flanged ends facilitate easy installation and maintenance.

Product Name: NACE MR0175 Swing Check Valve
Type: Swing Check Valve
Design Standard: API 6D
Nace Requirements: NACE MR0175
Body Material: ASTM A216 WCB, Carbon Steel
Size: 12 Inch, DN300
Pressure: Class 150 LB, PN20
End Connection: RF Flanged
Medium: Water, Oil, Gas, etc
Temperature Range: -29°C to 595°C

Universal Cast Steel Check Valves are meticulously designed and manufactured in strict compliance with international standards such as API 6D, BS1868, ASME B16.34, or equivalent. These valves are engineered to minimize flow resistance and pressure drop, ensuring optimal performance. They are specifically designed for horizontal installation, with a lapped and screwed seat ring that guarantees a tight seal and long-lasting service. The valve's disc is precisely engineered and machined to achieve efficient automatic shut-off at zero pressure, featuring a compact structure and low-emission service. In its standard configuration, the swing check valve includes a bolted cover and a free-swinging clapper, which acts as the closing member and responds to flow conditions. While these valves are ideal for horizontal pipeline installations, heavier disc weights may lead to chattering issues. In such cases, dampers or counterweights should be provided to mitigate these problems.

Technical Specification

» Type: Swing Check Valve
» Nominal Diameter: NPS 2-24 Inch (DN50-DN600)
» Design Pressure: Class 150-2500 LB (PN10-PN420)
» Material: ASTM A216 WCB, WCC, 217 WC6, WC9, C5, C12A, A352 LCB, LCC, A351 CF8, CF8M, CF3M, CF8C
» End Connections: Flanged (FF, RF, RTJ) to international standards
» Design and Manufacture: BS 1868, API 6D, DIN 3352
» Face to Face (End to End): ANSI B16.10, EN 558 series
» Flanged Connection: ASME B16.5, ASME B16.47, EN 1092 series
» Butt Welded End: ANSI B16.25
» Test and Inspection: API 598, ISO 5208, EN 12266-1

Structural Diagram

Product Features

» Preventing Backflow: The cast steel swing check valve is designed to prevent backflow in the pipeline. It allows the media to flow in a straight line through the valve, resulting in minimal pressure drop. When the media flows through the line, the disc swings into the open position. Conversely, back pressure in the line holds the disc in the closed position to prevent reverse flow.
» Flexible Installation Options: Cast steel swing check valves can be installed in both horizontal and vertical pipelines. However, they must be installed in the correct orientation relative to the media flow, as indicated by the flow direction arrow marked on the valve body.
» Customizable Accessories: A variety of accessories are available to meet specific customer requirements. These include bypasses, locking devices, counterweights, and more, ensuring that the valve can be tailored to suit different operational needs.