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  • Products
    Products:
    • Air and dirt separation devices
      Air and dirt separation devices:
      • Air vents for radiators
        Air vents for radiators:
        • Drain cock for radiators
        • Hygroscopic air vents for radiators
        • Manual air vents for radiators
        • Spare parts for manual air vents
      • Automatic air vents
        Automatic air vents:
        • Accessories for automatic air vents
        • Air vents for radiators
        • Automatic air vents with high discharge capacity
        • Compact automatic air vents
        • Radiator cap accessories with built-in air vent valve
        • Standard automatic air vents
      • Deaerators
        Deaerators:
        • Deaerators for large systems
        • Deaerators for medium-large systems
        • Deaerators for systems with technical room
        • High-efficiency deaerator for heat pumps
        • High-efficiency deaerators at air collection points
        • Under-boiler deaerators
      • Dearators-dirt separators
        Dearators-dirt separators:
        • Deaerators-dirt separators with magnet
        • Deaerators-dirt separators
      • Dirt separators for boiler systems or chiller, with technical room
        Dirt separators for boiler systems or chiller, with technical room:
        • Brass dirt separators with magnet
        • Steel dirt separators with magnet
        • Technopolymer dirt separators with magnet
        • Water treatment kit
      • Dirt separators for heat pump systems
        Dirt separators for heat pump systems:
        • Multifunction device in technopolymer with dirt separator and strainer
        • Semi-automatic self-cleaning magnetic filter
      • Dirt separators for wall-hanging boiler systems
        Dirt separators for wall-hanging boiler systems:
        • Magnetic filters dirt separators
        • Under-boiler dirt separator strainer with magnet
        • Water treatment kit
      • Domestic hot water treatment
        Domestic hot water treatment:
        • Polyphosphate dispenser
        • Water treatment kit
      • Self-cleaning device for systems
        Self-cleaning device for systems:
        • Self-cleaning magnetic filters dirt separators
      • Water treatment
        Water treatment:
        • Chemical additives
        • Compact water treatment units
        • Demineralisation cartridges
        • Softening cartridges
    • Backflow prevention devices
      Backflow prevention devices:
      • Backflow prevention devices
        Backflow prevention devices:
        • BA type backflow prevention devices
        • BA type backflow prevention devices with cartridge
        • CAa type backflow prevention devices
        • CAb type backflow prevention devices
        • Pre-assembled group with ba type backflow prevention device
        • Spare parts for backflow prevention devices
      • Check valves
        Check valves:
        • Ball valves with built-in check valves
        • Check valves for removable connection
        • EA type check valves
        • EA type check valves with built-in shut-off valve
        • EB type check valves
        • EC type double check valve
      • Strainers
        Strainers:
        • Flanged filters for domestic hot water systems
        • Threaded filters for domestic hot water/heating systems
    • Balancing and control devices
      Balancing and control devices:
      • Automatic flow rate regulator (AUTOFLOW®)
        Automatic flow rate regulator (AUTOFLOW®):
        • Automatic flow rate regulator and ball valve
        • Automatic flow rate regulator
        • Automatic flow rate regulator with stainless steel cartridge and ball valve
        • Automatic flow rate regulator with stainless steel cartridge
        • Automatic flow regulator with stainless steel cartridge, flanged
        • Compact automatic flow rate regulator
        • Compact automatic flow rate regulator, in line
        • Spare polymer cartridges, for 121 and 126 series
        • Spare polymer cartridges, for 127 series
        • Spare polymer cartridges, for 128 series
        • Spare stainless steel cartridges
      • Butterfly valves
        Butterfly valves:
        • Accessories for butterfly valves
        • Butterfly valves - lug type
        • Butterfly valves - wafer type
        • Rotational actuator for butterfly valves
      • Differential pressure control devices
        Differential pressure control devices:
        • Differential by-pass valve
        • Differential pressure control valve (DPCV)
        • Measurement and control accessories
      • Dynamic balancing and control devices
        Dynamic balancing and control devices:
        • Cast iron pressure independent control valves (PICV)
        • Connection and regulation kit
        • Pressure independent control valves (PICV)
      • Regulating globe valves
        Regulating globe valves:
        • Brass regulating valve
        • Cast iron regulating valve
        • Linear actuator for regulating valves
      • Regulating mixing valves
        Regulating mixing valves:
        • Actuators
        • Brass mixing regulation valves
        • Cast iron mixing regulation valves
        • Regulators
      • Static balancing devices
        Static balancing devices:
        • Balancing valve with flow meter
        • Balancing valves
        • Measurement and control
    • Components for central heating systems
      Components for central heating systems:
      • Check valves
        Check valves:
        • Standard check valves with shut-off
      • Components for heat pump systems
        Components for heat pump systems:
        • Antifreeze valve
        • Antifreeze valve with air sensor
        • Buffer tank - hydraulic separator
        • Changeover and distribution unit radiant panel fan-coil - system
        • Differential by-pass valve
        • Diverter valves for heat pump systems
        • High-efficiency deaerator for heat pump systems
        • Technopolymer instrument holder
        • Technopolymer magnetic filters dirt separators
      • Control devices and accessories
        Control devices and accessories:
        • Accessories
        • Air separators
        • Flow switches
        • Pressure and float switch
        • Pressure gauges
        • Temperature gauges
        • Temperature/pressure gauge
        • Thermostats
      • Differential pressure control devices
        Differential pressure control devices:
        • Differential by-pass valve
      • Expansion vessels
        Expansion vessels:
        • Accessories for expansion vessels
      • Filling units
        Filling units:
        • Boiler filling loop
        • Charging unit with BA type backflow preventer
        • Charging unit with CA type backflow preventer
        • Compact charging unit with BA type backflow preventer
        • Standard filling units
      • Hydraulic separators
        Hydraulic separators:
        • Multifunction hydraulic separator
        • Standard hydraulic separator
      • Hydraulic separators-manifolds
        Hydraulic separators-manifolds:
        • Accessories for SEPCOLL
        • SEPCOLL (outlet centre distance 125 mm)
        • SEPCOLL (outlet centre distance 90 mm)
      • Instrument holders
        Instrument holders:
        • Brass instrument holder
        • Technopolymer instrument holder
      • Manifolds for central heating system
        Manifolds for central heating system:
        • Compact manifolds for central heating system DN 25
        • Compact manifolds for central heating system DN 32
        • Standard manifolds for central heating system
      • Safety relief valves for domestic water systems
        Safety relief valves for domestic water systems:
        • Safety relief valves
        • Temperature and pressure relief valves
      • Safety relief valves
        Safety relief valves:
        • Accessories for safety relief valves
        • NF safety relief valves
        • Standard safety relief valves
        • TUV safety relief valves
      • Strainers
        Strainers:
        • Flanged filters for heating systems
        • Threaded filters for domestic hot water/heating systems
      • Supply units
        Supply units:
        • Accessories for regulator
        • Accessories for units
        • Direct supply units
        • Motorised regulating units
        • Spare parts for regulating units
        • Temperature regulators
        • Thermostatic regulating units
    • Components for domestic water system
      Components for domestic water system:
      • Check valves
        Check valves:
        • Check valves for removable connection
        • EC type double check valve
        • Standard ball valves with built-in check valves
      • Control devices for domestic water systems
        Control devices for domestic water systems:
        • Anti-freeze safety devices
        • Expansion vessels for domestic water systems
        • Flow limiter
        • Housing and strainer cartridges
        • Vacuum breaker device
        • Water hammer arrester
      • Electronic mixing valves
        Electronic mixing valves:
        • Electronic mixing valve with thermal disinfection - 230 V
        • Electronic mixing valve with thermal disinfection - 24 V
        • Hybrid electronic mixing valves
        • Spare parts for electronic mixing valve with thermal disinfection, flanged connections - 230 V
        • Spare parts for electronic mixing valve with thermal disinfection, flanged connections - 24 V
        • Spare parts for electronic mixing valve with thermal disinfection, threaded connections - 230 V
        • Spare parts for electronic mixing valve with thermal disinfection, threaded connections - 24 V
        • Spare parts for hybrid electronic mixing valves
      • Manifolds for domestic water systems
        Manifolds for domestic water systems:
        • Accessories for manifolds 359 series
        • Accessories for modular manifolds
        • Accessories for standard manifold
        • Distribution manifolds with individual shut-off valves
        • Distribution manifolds with main shut-off valves
        • Inspectable distribution manifolds with main shut-off valves
        • Inspectable unit with main shut-off valves
        • Pressfittings with fixing clips
        • Spare parts for manifolds 359 series
        • Standard distribution manifold with individual shut-off valves
        • Unit with main shut-off valves
      • Pressure reducing valves
        Pressure reducing valves:
        • Accessories for combined group for pressure control
        • Combined group for pressure and temperature control
        • Combined group for pressure control
        • Compact pressure reducing valves for high temperature
        • Compact pressure reducing valves
        • Micro pressure reducing valves
        • Pre-adjustable pressure reducing valves for high temperature
        • Pre-adjustable pressure reducing valves
        • Pressure reducing and regulating valves
        • Pressure reducing valves for first stage control
        • Spare parts for pressure reducing valves
        • Standard pressure reducing valves for high temperature
      • Safety groups for domestic water systems
        Safety groups for domestic water systems:
        • Expansion groups for hot water storage heaters
        • Safety groups for hot water storage heaters
      • Safety relief valves for domestic water systems
        Safety relief valves for domestic water systems:
        • Temperature and pressure relief valves
      • Thermostatic mixing valves
        Thermostatic mixing valves:
        • "L" pattern adjustable thermostatic mixing valve
        • Anti-scald thermostatic mixing valves at the point of use
        • Combined group for pressure and temperature control
        • Thermostatic mixing valves for commercial applications
        • Thermostatic mixing valves for installation at the point of distribution
        • Thermostatic mixing valves for small applications
        • Thermostatic mixing valves with thermal disinfection
      • Thermostatic regulator for domestic hot water recirculation circuits
        Thermostatic regulator for domestic hot water recirculation circuits:
        • Multifunction thermostatic regulators
        • Standard thermostatic regulators
        • Thermostatic regulator with built-in check valve
    • Components for renewable energy systems
      Components for renewable energy systems:
      • Automatic air vents and deaerators for solar thermal systems
        Automatic air vents and deaerators for solar thermal systems:
        • Automatic air vents for solar thermal systems
        • Deaerators for solar thermal systems
        • Manual air separator for solar thermal systems
      • Control devices for biomass systems
        Control devices for biomass systems:
        • Anti-condensation recirculation and distribution unit
        • Anti-condensation valve
      • Direct heat meter
        Direct heat meter:
        • Turbine heat meter for solar systems
      • Fittings for solar thermal systems
        Fittings for solar thermal systems:
        • Mechanical O-ring seal for solar thermal systems
        • Three-piece union fitting
      • Geothermal manifold
        Geothermal manifold:
        • Accessories for geothermal manifold
        • Geothermal modular manifold
        • Preassembled geothermal manifold
        • Shut-off and balancing valves for geothermal manifold
      • Motorised diverter valve for solar thermal systems
        Motorised diverter valve for solar thermal systems:
        • Thermostatic diverter valves for solar thermal systems
      • Pump stations for solar thermal systems
        Pump stations for solar thermal systems:
        • Accessories and spare parts for pump stations for solar thermal systems
        • Expansion vessels for solar thermal systems
        • Pump stations for solar thermal systems
        • Regulator for solar thermal systems
      • Safety devices for solar thermal systems
        Safety devices for solar thermal systems:
        • Anti-freeze devices
        • Safety relief valves for solar thermal systems
        • Temperature and pressure relief valves for solar thermal systems
      • Safety relief valves for biomass systems
        Safety relief valves for biomass systems:
        • Draught regulating valve
        • Temperature relief valves with automatic filling
        • Temperature safety relief valves
      • Shut-off and balancing valves for solar thermal systems
        Shut-off and balancing valves for solar thermal systems:
        • Balancing valves for solar thermal systems
        • Shut-off valves for solar thermal systems
      • Solar storage-to-boiler connection kit
        Solar storage-to-boiler connection kit:
        • Solar storage-to-boiler motorised connection kit
        • Solar storage-to-boiler thermostatic connection kit
      • Spare parts for circulation units
        Spare parts for circulation units:
        • Spare parts for circulation units for 255 series
        • Spare parts for circulation units for 278-279 series
      • Thermostatic mixing valve for solar thermal systems
        Thermostatic mixing valve for solar thermal systems:
        • Solar thermostatic mixing valve for commercial applications
        • Solar thermostatic mixing valve for domestic applications
        • Solar thermostatic mixing valve for point of use
      • Zone/diverter valves
        Zone/diverter valves:
        • Zone/diverter ball valves (three-way)
    • Expansion vessels, chrono-thermostatic, thermostats
      Expansion vessels, chrono-thermostatic, thermostats:
      • Control devices for autoclaves
        Control devices for autoclaves:
        • Pressure switch and float switch
      • Expansion vessels
        Expansion vessels:
        • Accessories for expansion vessels
        • Expansion vessels for domestic water systems
        • Expansion vessels for heating systems
      • Temperature regulators, thermostats and chrono-thermostats
        Temperature regulators, thermostats and chrono-thermostats:
        • Chrono-thermostats
        • Temperature regulators
        • Thermostats
    • Fittings
      Fittings:
      • Fittings for pipe connections
        Fittings for pipe connections:
        • Accessories and spare parts for deca-fittings
        • Compression fittings with O-ring seal
        • Fittings for PE-X pipes
        • Fittings for iron pipes
        • Fittings for polyethylene pipes
        • Spare parts for mechanical fittings with O-ring seal
        • Three-piece fittings
        • Unions
    • Gas safety
      Gas safety:
      • Gas control devices and accessories
        Gas control devices and accessories:
        • Gas accessories
        • Gas detector
        • Signal and alarm accessories
      • Gas filters and regulators
        Gas filters and regulators:
        • Gas filters
        • Strandard gas filters and regulators
      • Gas solenoid valves
        Gas solenoid valves:
        • Solenoid valves for gas NC with automatic reset
        • Solenoid valves for gas NC with manual reset
        • Solenoid valves for gas NO with manual reset
        • Spare parts for gas solenoid valves
    • Heat systems
      Heat systems:
      • Direct heat meter
        Direct heat meter:
        • Options
        • Turbine heat meter
        • Ultrasonic direct heat meters
      • Mechanical wall mounted heat interface unit
        Mechanical wall mounted heat interface unit:
        • Completion codes for mechanical heat interface units
        • Mechanical wall mounted heat interface unit
      • Plurimod user modules
        Plurimod user modules:
        • 2-3 way plurimod user module
        • Pre-assembled unit for three users
        • Self-balanced plurimod user module
        • User module with automatic flow rate control
      • Recess PLURIMOD user module with distribution manifold
        Recess PLURIMOD user module with distribution manifold:
        • Recess 2-3 way user module with distribution manifold
        • Recess self-balanced user module with distribution manifold
      • Recess mounted heat interface unit with electronic regulation
        Recess mounted heat interface unit with electronic regulation:
        • Recess mounted direct heat interface unit with basic regulation
        • Recess mounted indirect heat interface unit with basic regulation
      • Recess user modules with metering
        Recess user modules with metering:
        • Recess user module with 2 way zone valve
        • Recess user module with 3 way zone valve
      • Supply and regulating units ready for heat metering
        Supply and regulating units ready for heat metering:
        • Supply and regulating units ready for heat metering
      • Wall mounted heat interface units with electronic regulation
        Wall mounted heat interface units with electronic regulation:
        • Completion codes for heat interface units with electronic regulation
        • DHW only heat interface unit
        • Direct heat interface unit with advanced electronic regulation
        • Direct heat interface unit with basic electronic regulation
        • Indirect heat interface unit for storage DHW production
        • Indirect heat interface unit with advanced electronic regulation
        • Indirect heat interface unit with basic electronic regulation
      • Wall mounted indirect cooling interface unit
        Wall mounted indirect cooling interface unit:
        • Wall mounted indirect cooling interface unit
      • Water meter for domestic water systems
        Water meter for domestic water systems:
        • Domestic water meter kit for PLU
        • Domestic water meter kit with shut-off ball valves
        • Water meters for domestic cold and hot water
    • Radiant panel system control
      Radiant panel system control:
      • Distribution manifolds for radiant panel systems
        Distribution manifolds for radiant panel systems:
        • Accessories for distribution manifolds 1"
        • Accessories for technopolymer manifolds
        • Brass distribution manifolds for radiant panel systems, connections 1" and 1 1/4"
        • Brass manifolds with flow rate balancing valves, 1" connections
        • Brass manifolds with micrometric preregulating valves, 1" connections
        • Changeover and distribution unit radiant panel fan-coil - system
        • Dynamic distribution manifolds in brass, 1" connections
        • Technopolymer distribution manifolds with manual balancing, 1" connections
      • Inspection wall boxes and wall ports
        Inspection wall boxes and wall ports:
        • Boxes for distribution manifolds (110 - 140 mm)
        • Boxes for distribution manifolds (110 - 150 mm)
        • Boxes for distribution manifolds (80 - 120 mm)
      • Regulating units for radiant panel systems
        Regulating units for radiant panel systems:
        • Accessories and spare parts for modulating temperature regulating unit
        • Accessories for set point thermostatic regulating unit
        • Modulating temperature regulating unit with digital regulator
        • Set point thermostatic regulating unit with medium distribution kit for primary circuit
        • Set point thermostatic regulating units
        • Set point thermostatic regulating units, brass
        • Spare parts for set point thermostatic regulating units
        • Thermostatic mixing valve for radiant panel systems
      • Thermo-electric actuators
        Thermo-electric actuators:
        • Control bar
        • Thermo-electric actuator (with push fit connection)
        • Thermo-electric actuator (with threaded connection)
    • Valves and accessories for radiators
      Valves and accessories for radiators:
      • Accessories for radiators
        Accessories for radiators:
        • Accessories for radiators
        • Drain cock for radiators
      • Convertible radiator valves
        Convertible radiator valves:
        • Convertible radiator valves (for copper pipe)
        • Convertible radiator valves (for steel pipe)
      • Convertible radiator valves with pre-setting
        Convertible radiator valves with pre-setting:
        • Convertible radiator valves with pre-setting (for copper pipe)
        • Convertible radiator valves with pre-setting (for steel pipe)
      • Convertible radiator valves, control head and lockshield valves HIGH-STYLE
        Convertible radiator valves, control head and lockshield valves HIGH-STYLE:
        • Control head for convertible radiator valves, black finish
        • Control head for convertible radiator valves, chrome finish
        • Control head for convertible radiator valves, white finish
        • Convertible radiator and lockshield valves with push fit connection
        • Convertible radiator valve and lockshield valve for heating systems
        • Convertible radiator valves, black finish
        • Convertible radiator valves, chrome finish
        • Convertible radiator valves, white finish
      • Fittings
        Fittings:
        • Accessories for fittings
        • Fittings (23 p. 1.5 threaded connections)
        • Fittings (3/4" threaded connections)
      • Lockshield valves
        Lockshield valves:
        • Lockshield valves (copper pipe)
        • Lockshield valves (steel pipe)
      • Manual radiator valves
        Manual radiator valves:
        • Lockshield valves (copper pipe)
        • Lockshield valves (steel pipe)
        • Radiator valves (copper pipe)
        • Radiator valves (steel pipe)
      • Radiator valves for one-pipe and two-pipe systems
        Radiator valves for one-pipe and two-pipe systems:
        • Convertible radiator valves for one-pipe and two-pipe designer heating systems
        • Convertible radiator valves for one-pipe and two-pipe systems
        • Convertible radiator valves for one-pipe systems
        • Manual valve for one-pipe systems
        • Manual valve for two-pipe systems
        • Spare parts for one-pipe and two-pipe radiator valves
      • Remote thermal regulation system (CALEFFI CODE®)
        Remote thermal regulation system (CALEFFI CODE®):
        • Accessories for CALEFFI CODE
        • Remote thermal regulation system, black
        • Remote thermal regulation system, white
      • Spare parts for radiator valves
        Spare parts for radiator valves:
        • Spare parts for high-style convertible radiator valves
        • Spare parts for radiator valves
      • Thermostatic control heads
        Thermostatic control heads:
        • Accessories for thermostatic control heads
        • Thermostatic control head with remote adjusting knob
        • Thermostatic control heads with built-in sensor
        • Thermostatic control heads with contact probe
        • Thermostatic control heads with remote sensor
      • Thermostatic valves
        Thermostatic valves:
        • Dynamic thermostatic radiator valves (for copper pipe)
        • Dynamic thermostatic radiator valves (for steel pipe)
        • Thermostatic valves (for copper pipe)
        • Thermostatic valves (for steel pipe)
      • Valves for panel radiators
        Valves for panel radiators:
        • Valves for panel radiators - double fitting
        • Valves for panel radiators - single fitting
      • Wall-covering plates
        Wall-covering plates :
        • Double wall-covering plates
        • Single wall-covering plates
    • Zone and motorised valves, distribution manifolds, boxes and accessories
      Zone and motorised valves, distribution manifolds, boxes and accessories:
      • Accessories
        Accessories:
        • Accessories
      • Distribution manifolds with shut-off and pre-regulating valves
        Distribution manifolds with shut-off and pre-regulating valves:
        • Accessories for manifolds - 1 1/4" connections
        • Accessories for manifolds - 1" connections
        • Pre-assembled distribution manifolds with shut-off and pre-regulating valves - 1 1/4" connections
        • Pre-assembled distribution manifolds with shut-off and pre-regulating valves - 1" connections
        • Single distribution manifolds with shut-off and pre-regulating valves - 1 1/4" connections
        • Single distribution manifolds with shut-off and pre-regulating valves - 1" connections
      • Dual distribution manifolds
        Dual distribution manifolds:
        • Accessories for dual distribution manifolds
        • Dual distribution manifolds
      • Fittings
        Fittings:
        • Fittings (3/4"-1" threaded connections)
        • Fittings (threaded connections 23 p. 1.5)
      • Inspection wall boxes and wall ports
        Inspection wall boxes and wall ports:
        • Brackets for inspection wall boxes
        • Plastic inspection wall box
        • Sheet steel inspection wall boxes (80 - 120 mm)
        • Sheet steel inspection wall boxes
      • Single distribution manifolds
        Single distribution manifolds:
        • Blind single distribution manifolds
        • Single distribution manifolds - female outlet
        • Single distribution manifolds - male outlet
        • Single distribution manifolds for air conditioning systems
        • Single distribution manifolds with shut-off valves
      • Thermo-electric actuators
        Thermo-electric actuators:
        • Thermo-electric actuator (with push to fit connection)
        • Thermo-electric actuator (with threaded connection)
      • Zone/diverter valves
        Zone/diverter valves:
        • Accessories and spare parts for motorised ball valve
        • Motorised ball zone valves with insulation
        • Motorised three-way ball valves for high flow rates - "L" drilling
        • Motorised three-way ball valves for high flow rates - "T" drilling
        • Motorised three-way ball zone valves by-pass version
        • Motorised three-way ball zone valves
        • Motorised three-way ball zone valves with telescopic by-pass tee
        • Motorised two-way ball valves for high flow rates
        • Motorised two-way ball zone valves
        • Motorised zone valves with spring return
        • Piston zone valves thermo-electric
        • Thermo-electric piston zone valves
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    • Supporting energy transition
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    • Smart design
    • Better water management
    • Sustainable comfort for HVAC systems
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    Software:
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    • Domestic Water Sizer
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Spare parts for circulation units
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Spare parts for circulation units for 255 series
See all products of

Spare parts for circulation units for 255 series

255018

1" flow meter for unit code 255266HE.

F0000565

Spare pump PML Solar 25-145 for 255266 unit.

255003

Spare parts for circulation units for 255/256 series.

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