SIATA V250

Summary

Product identification

• Product: SIATA V250 Control Valve
• Type: Water Purification Valve
• Manufacturer: Pentair Control Valves (implied by document context)

Technical Specifications

• Versions: Available with or without by-pass.
• Mounting: Top mounted valve.
• Flow Rate: Up to 21 m³/h.
• Connections: Quick pilot connections.
• Applications: Suitable for residential and commercial softening, demineralisation, dealkalisation applications, as well as filtration systems.
• Compatibility: Compatible with most of the SIATA controller range.

Technical Characteristics

• Material: ABS + 17% glass fiber.
• Color: Blue / black.
• Hydrostatic Pressure: 22 bar.
• Working Pressure: From 1.5 to 6 bar.
• Working Temperature: From 5° to 40°C.

Flow Rate (3.5 bar inlet - valve alone)

• Continuous (∆p = 1 bar): 21 m³/h
• Peak (∆p = 1.9 bar): 28.9 m³/h
• *Cv : 24.4
  • *Cv: Flow rate of valve alone in GPM at 0.07 bar pressure drop.
• Maximum Backwash (∆p = 1.9 bar): 12 m³/h
• Maximum Rapid Rinse (∆p = 1.9 bar): 15 m³/h

Valve Connections

• Inlet / Outlet: 2”¼ - BSP male threaded.
• Drain line connector: 1’’1/2 BSP female - 2’’ BSP male.
• Mounting base / Tank connection: 4” top mount.
• Adjustable cycles: Depending on controller fitted.

Options

• Threaded fittings:
  • 494-A/05: dia. 50 mm to glue (PVC-PVC)
  • 494-G/05: 2” BSP male (Brass-Brass)
  • 494-H/05: 1 ½” BSP female (PVC-PVC)
  • 494-P/05: 1 ½” BSP female (Brass-Brass)
• Regeneration: Up flow regeneration - No.
• Duplex systems: Yes.
• External DLFC 1” 1/4: Yes.

Tank Size Application (Recommended)

• Softener & Demineralisation: 14’’ - 30’’ (max 500 L of resin).
• Filter: 14’’ - 30’’ (according to filter media specs).

Regeneration Cycles

• Softener:
  1. Backwash (Up flow)
  2. Brine & slow rinse (Down flow)
  3. Rapid rinse (Down Flow)
• Filter:
  1. Backwash (Up Flow)
  2. Rapid rinse (Down Flow)
• Demineralisation:
  1. Backwash (Up flow)
  2. Brine & slow rinse (Down flow)
  3. Rapid rinse (Down Flow)

Note: For filter applications, depending on the controller type, brine draw and slow rinse time must be set to 0.

Disclaimer: This extraction may miss figures, footnotes, or revisions. Contractual data must match the OEM PDF revision used on the project.

Official datasheet (PDF)

Lenntech datasheet mirror