Hydronic Solution Valves

CALEFFI ITALY – FLOW SWITCH Series 626

For pipes from 1″ to 8″.

  • Maximum working pressure: 10 bar
  • Medium temperature range: -30–120 °C
  • Protection class: IP 54
  • Contact rating (250 V): 15 (5) A
CALEFFI ITALY – PRE-ASSEMBLED DISTRIBUTION MANIFOLD Series 664

Complete with:

  • return manifold with built-in shut-off valves fitted for thermo-electric actuator;
  • flow manifold complete with flow meters 0–5 l/m scale and flow rate balancing valves;
  • end fittings with automatic air vent and drain cock;
  • steel mounting brackets for use with box or for direct wall mounting.
  • Maximum working pressure: 6 bar
  • Medium temperature range: 5–60 °C
  • Outlet centre distance: 50 mm
  • Flow rate regulation range: 0–5 l/min
CALEFFI ITALY – BALLSTOP, BALL VALVE Series 3230

Ball valve with built-in check valve, female connections.
Butterfly handle.

  • Maximum working pressure: 16 bar
  • Medium temperature range: 5–90 °C
  • Material: brass
  • Size: ½”, ¾”, 1”
CALEFFI ITALY – BALLSTOP, BALL VALVE Series 3230

Ball valve with built-in check valve, female connections. Lever handle.

  • Maximum working pressure: 16 bar
  • Medium temperature range: 5–90 °C
  • Material: brass
  • Size: 1”, 1 ¼”, 1 ½”, 2”
CALEFFI ITALY – TEMPERATURE AND PRESSURE RELIEF VALVE Series 309
  • Pressure Settings = 6 – 7 – 10 bar
  • Temp. settings = 90 °C
  • Connection size = 1/2” x Ø 15 mm – 3/4” x Ø 22 mm
CALEFFI ITALY – TEMPERATURE AND PRESSURE RELIEF VALVE Series 309
  • Pressure Settings = 3 – 4 – 6 – 7 – 10 bar
  • Temp. settings = 90 °C
  • Connection size = 1/2” x Ø 15 mm – 3/4” x Ø 15 mm – 3/4” x Ø 22 mm
CALEFFI ITALY – SAFETY RELIEF VALVES FOR SOLAR SYSTEMS Series 253
  • Settings = 3 – 4 – 6 – 8 – 10 bar
  • Medium temperature range = -30 – 160 °C
  • Connection size = 1/2”, 3/4
CALEFFI ITALY – SAFETY RELIEF VALVE Series 311
  • Settings = 1.5 – 2.5 – 3 – 3.5 – 4 – 5 – 6 – 7 – 8 bar
  • Medium temperature range = 5 – 110 °C
  • Connection size = 1/2”, 3/4”
CALEFFI ITALY – SAFETY RELIEF VALVE Series 527 EST
  • Settings = 2.25 – 2.5 – 3 – 3.5 – 4 – 4.5 – 5 – 5.4 – 6 bar
  • Special settings = 1 – 1.5 – 2 – 7 – 8 bar
  • Medium temperature range = 5 – 110 °C
  • Connection size = 1/2”x3/4” – 3/4”x1” – 1”x1-1/4” – 1-1/4”x 1-1/2”
CALEFFI ITALY – PILOT OPERATED PRESSURE REDUCING VALVES Series 578

Pilot operated pressure reducing valves.
Coupling with counter flange EN 1092-1.
Complete with two pressure gauges.

  • Maximum upstream pressure: 16 bar
  • Medium temperature range: 1–65 °C
  • Adjustment pressure range: 2–14 bar
  • Material: cast iron