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Split-Wedge Forged Valve

Continuous temperature fluctuation in a catalytic reforming unit, due to the process operating cycles, generates high stresses in the valve body, which can cause surface cracking in a cast valve. The Remosa split-wedge valve is fabricated from forged material. This choice offers several advantages - higher material density, uniform structure and higher stress integrity.

The Split-Wedge is designed to resist the piping loads during unit Hot/Cold cycles when the valve body pushes against the wedge.

Wedge and seating ring surfaces are overlaid with Stellite in the contact area (seating rings / wedge and wedge / guides).

The valve stem is a one-piece forged shaft with anti-rotating device. No welded parts are added.

The valve will be supplied with the CE stamp in accordance with:

• the European Pressure Equipment Directive (PED: 97/23/EC);
• the European Directive for Equipment and Protective Systems in Potentially Explosive Atmospheres (ATEX: 94/9/EC);
• the Machinery Directive (98/37/EC).

This valve is designed according to:

• A.S.M.E. (American Society of Mechanical Engineers) B31.3 Process Piping Code;
• A.S.M.E. (American Society of Mechanical Engineers) Section VIII, Division 1, Boiler and Pressure Vessel Code;
• A.S.M.E. (American Society of Mechanical Engineers) Section VIII, Division 2, Boiler and Pressure Vessel Code Alternative Rules for Finite Element Analysis;
• A.P.I. (American Petroleum Institute).

Valve features:

• forged body and stem,
• bonnet lip seal,
• disc and seat surface hardfaced with Stellite,
• stem anti rotating device,
• bolted bonnet.

Options:

• bypass line,
• pressure seal bonnet,
• packing rings live load,
• limit switches.

Copyright © REMOSA spa 2007 Last updated on May 29, 2007