Wafer-Split Ball Valves with heating jacket | Valpres

Valpres Wafer-Split Ball Valve with Heating Jacket

Wafer/split type ball valve for flanged installation, equipped with a heating jacket to maintain process temperature within the valve body. Selected for lines where the medium increases in viscosity, crystallizes, or solidifies during flow interruption, such as resins, oils, asphalt, waxes, adhesives, polymers, and temperature-sensitive chemicals.

Technical Data

• Design: wafer-split ball valve
• Connections: flanged, wafer type installation
• Flange standards: DIN or ANSI
• Pressure ratings: PN16, PN40, PN100
• Body materials: ASTM A105, A350 LF2, A182 F316/F316L, A479 Type 316
• Seats: PTFE, RPTFE, PTFE+MET, PEEK, depending on series
• Body/stem sealing: PTFE, FKM, FFKM, or Graphite per configuration
• Temperature: typically -20°C to +160°C, up to +250°C with suitable PEEK/FFKM seats
• Vacuum: up to 10⁻³ torr or 10⁻² torr, per series
• Actuator mounting: ISO pad F04, F05, F07, F10 per DN

Heating Jacket Function

The jacket does not control the process directly. It maintains temperature in the valve body by circulating a heating medium, reducing the risk of blockage in the ball cavity and seats. Selection should be based on thermal calculations for piping, insulation, product residence time, and freezing point.

Material Selection

For general chemical service, stainless steel F316/F316L or A479 316 is preferred. For utility lines or less corrosive media, carbon steel A105 or LF2 may be considered. PEEK seats are suitable for higher temperatures or loads, while PTFE/RPTFE are used for lower temperature and mechanical requirements.

Applications

• Heated resin and polymer lines
• Oils, greases, waxes, and viscous products
• Chemicals prone to crystallization
• Lines requiring short face-to-face installation
• Isolation points with limited flange spacing

FAQ

When is a wafer-split valve selected over a standard flanged valve?
When reduced face-to-face length and installation between DIN or ANSI flanges is required.

What should be checked before selection?
DN, PN/Class, body material, seat material, product temperature, heating medium, sealing compatibility, and actuator torque.