DIN Flanged Ball Valve 2-PC Cast Steel

Key Features

• WCB Cast Steel Construction: The body and end cap form a rigid pressure-containing assembly for compatible industrial duties. Material suitability should be assessed against fluid composition, design temperature and project requirements.
• Full-Bore Geometry: The open ball provides a relatively direct passage through the valve, helping limit pressure loss in transfer lines and equipment connections. Flow capacity should be checked using the applicable valve data.
• Quarter-Turn Isolation: A 90-degree stem rotation opens or closes the passage, supporting straightforward manual operation or integration into an automated valve assembly.
• Two-Piece Body Arrangement: The split housing provides access to internal components during servicing. Maintenance requires isolation, depressurization and removal or dismantling according to the approved instructions.
• Standardized Piping and Actuator Interfaces: Published specifications reference EN 1983 for design, EN 558-1 for installation length, EN 1092-1 for flanges and ISO 5211 for actuator mounting.
• Optional Fire-Safe Version: A fire-safe configuration is listed as an option. Its construction, qualification and supporting documentation should be confirmed for the selected valve.

Materials and Construction

• Body and End Cap: WCB cast carbon steel.
• Ball and Stem: Stainless steel; confirm the supplied grades where corrosion or special-service requirements apply.
• Seats: PTFE.
• Body-Joint Gasket, Thrust Washer and Packing: PTFE in the published material schedule.
• Gland and Locking Device: Stainless steel.
• Body Bolts and Nuts: Carbon steel.

The final material schedule should identify any changes associated with optional configurations, particularly the sealing arrangement supplied for a fire-safe version.

Typical Applications

• Industrial Process and Utility Lines: Isolation of compatible fluids where carbon steel is accepted by the piping material specification.
• Oil Transfer and Lubrication Systems: Selected oil services after confirming fluid composition, viscosity, temperature and seal compatibility.
• Air and Gas Distribution: Compatible plant-air and gas duties within the verified operating limits and applicable project requirements.
• Pump and Equipment Packages: Local isolation around pumps, filters, heat exchangers and skid-mounted equipment.
• Energy and Petrochemical Facilities: Selected process and auxiliary duties where the complete valve specification meets the service requirements.

Pressure and Temperature Selection

Confirm the pressure configuration for each ordered size. PN16 is listed across DN15–DN300, while PN40 is listed for DN15–DN100; the higher rating should not be assumed for the entire range.

The permissible operating envelope depends on the assembled valve. Although WCB is used in elevated-temperature equipment, the PTFE seats, packing and joint seals can impose lower limits than the metallic body. Hot-liquid, steam and condensate duties therefore require confirmation of the complete pressure–temperature rating.

For actuator selection, provide the maximum differential pressure, operating frequency and required stroke time. Adequate torque margin is important for reliable operation under the specified service conditions.

Fire-Safe Configuration and Project Documentation

For applications requiring fire-safe performance, specify the required test standard and obtain qualification documents covering the offered design and applicable size and pressure range. A cast steel body alone does not establish fire-safe qualification.

Fire-test performance also differs from the valve’s normal operating limits. Confirm the approved sealing materials and construction rather than applying the standard PTFE material schedule automatically to the optional version.

Any additional requirements for fugitive emissions, sour service or emergency shutdown operation should be identified separately in the enquiry.

Corrosion Protection and Operating Practice

WCB selection requires assessment of both internal fluid compatibility and external exposure. Stainless steel internals do not protect the carbon steel housing from an unsuitable medium. Specify the external coating and fastener protection for humidity, weathering or coastal conditions.

The valve is primarily intended for on/off service. Continuous partial opening can increase local velocity and damage soft seats. Liquid systems should also be assessed for pressure surges when determining closing speed.

Compare Other Body Materials

• Compare the ductile iron flanged ball valve for compatible water-system duties and associated corrosion-protection requirements.
• Compare the RG5 bronze flanged ball valve for copper-alloy construction and selected marine utility applications.
• Compare the stainless steel flanged ball valve when fluid compatibility requires evaluation of alternative body alloys.