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  • Products
    Products:
    • Air and dirt separation devices
      Air and dirt separation devices:
      • Air vents for radiators
        Air vents for radiators:
        • Accessories for manual air vents
        • Drain cock for radiators
        • Hygroscopic air vents for radiators
        • Standard air vents for radiators
      • 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
        • Standard automatic air vents
      • Deaerators for boiler systems or chiller, with technical room
        Deaerators for boiler systems or chiller, with technical room:
        • Brass deaerators
      • Deaerators for large systems
        Deaerators for large systems:
        • Steel deaerators
      • Deaerators for medium-large systems
        Deaerators for medium-large systems:
        • Accessories for deaerators
        • Brass deaerators
        • Steel deaerators
      • Deaerators for wall-hanging boiler systems
        Deaerators for wall-hanging boiler systems:
        • Accessories for deaerators
        • Technopolymer deaerators
      • Deaerators-dirt separators for boiler systems or chiller, with technical room
        Deaerators-dirt separators for boiler systems or chiller, with technical room:
        • Accessories for deaerators-dirt separators
        • Brass deaerators-dirt separators
        • Brass deaerators-dirt separators with magnet
      • Deaerators-dirt separators for heat pump systems
        Deaerators-dirt separators for heat pump systems:
        • Technopolymer deaerators-dirt separators
      • Deaerators-dirt separators for large systems
        Deaerators-dirt separators for large systems:
        • Steel deaerators-dirt separators
      • Deaerators-dirt separators for medium-large systems
        Deaerators-dirt separators for medium-large systems:
        • Steel deaerators-dirt separators
        • Steel deaerators-dirt separators with magnet
      • Dirt separators for boiler systems or chiller, with technical room
        Dirt separators for boiler systems or chiller, with technical room:
        • Accessories for magnetic filters dirt separators
        • Magnetic filters dirt separators
        • Technopolymer dirt separators with magnet
        • Water treatment kit
      • Dirt separators for heat pump systems
        Dirt separators for heat pump systems:
        • Accessories for magnetic filters dirt separators
        • Spare parts for magnetic filters dirt separators
        • Technopolymer magnetic filters dirt separators
      • Dirt separators for large systems
        Dirt separators for large systems:
        • Self-cleaning magnetic filters dirt separators
        • Steel dirt separators with magnet
      • Dirt separators for medium/large systems
        Dirt separators for medium/large systems:
        • Brass dirt separators with magnet
        • Steel dirt separators with magnet
        • Technopolymer magnetic filters dirt separators
      • Dirt separators for wall-hanging boiler systems
        Dirt separators for wall-hanging boiler systems:
        • Accessories for magnetic filters dirt separators
        • Under-boiler magnetic filters dirt separators
        • Water treatment kit
      • Domestic hot water treatment
        Domestic hot water treatment:
        • Polyphosphate dispenser
        • Water treatment kit
      • Water treatment
        Water treatment:
        • Chemical additives
        • Compact water treatment units
        • Demineralisation cartridges
        • Softening cartridges
        • Water treatment kit
    • 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:
        • 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
        • Standard ball valves with built-in check valves
      • 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:
      • Differential pressure control devices
        Differential pressure control devices:
        • Differential by-pass valve
        • Differential pressure regulating valve
        • Measurement and control accessories
        • Pre-regulation valve
      • Dynamic balancing and control devices
        Dynamic balancing and control devices:
        • AUTOFLOW® spare parts
        • Actuator for units and control valves
        • Automatic flow rate regulator (AUTOFLOW®)
        • 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
        • Regulators
      • Regulating mixing valves
        Regulating mixing valves:
        • Brass mixing regulation valves
        • Cast iron mixing regulation valves
        • Regulators
      • Static balancing devices
        Static balancing devices:
        • Balancing valve with flow meter
        • Manual balancing valve with variable orifice
        • Manual balancing valve with venturi device
    • Components for central heating systems
      Components for central heating systems:
      • Charging units
        Charging 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
      • Check valves
        Check valves:
        • Standard ball valves with built-in check valves
      • Components for heat pump systems
        Components for heat pump systems:
        • ANTIFREEZE VALVE
        • Antifreeze valve with air sensor
        • Balancing valve with flow meter
        • Brass deaerators
        • Buffer tank
        • Compact charging unit with BA type backflow preventer
        • Differential by-pass valve
        • Diverter valves for heat pump systems
        • Instrument holder kit in technopolymer
        • Technopolymer Deaerators-dirt separators
        • Technopolymer magnetic filters dirt separators
      • Control devices and accessories
        Control devices and accessories:
        • Accessories
        • Air separators
        • Anti-thermosiphon check valve
        • 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
      • Flow switches
        Flow switches:
        • Flow switches
      • 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
        • Instrument holder kit in technopolymer
      • Manifolds for central heating system
        Manifolds for central heating system:
        • Accessories for manifold for central heating system
        • Compact manifold for central heating system
        • Hydraulic separators
        • Standard manifold 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 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 and expansion group for DHW storages
        Control and expansion group for DHW storages:
        • Expansion vessels for domestic water systems
      • Control devices for domestic water systems
        Control devices for domestic water systems:
        • Anti-freeze safety devices
        • Flow limiter
        • Housing and strainer cartridges
        • Thermal safety devices
        • Vacuum breaker device
        • Water hammer arrester
      • Electronic mixing valves
        Electronic mixing valves:
        • Hybrid electronic mixing valves
        • Spare parts for hybrid electronic mixing valves
        • Spare parts for standard electronic mixing valves
        • Standard 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
        • 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:
        • 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:
        • Accessories for safety groups
        • 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 domestic applications
        • Thermostatic mixing valves with thermal disinfection
      • Thermostatic regulator for domestic hot water recirculation circuits
        Thermostatic regulator for domestic hot water recirculation circuits:
        • Standard thermostatic regulators
        • Thermostatic regulators with thermal disinfection function
    • 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
      • Control devices for biomass systems
        Control devices for biomass systems:
        • Accessories and spare parts for anti-condensation device
        • Anti-condensation recirculation and distribution unit
        • Anti-condensation valve
        • Draught regulating 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
      • 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:
        • 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
      • 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:
      • 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 solar thermal systems
        Fittings for solar thermal systems:
        • Compression fittings with O-ring seal
        • Fittings for PE-X pipes
        • Fittings for iron pipes
        • Fittings for polyethylene pipes
        • 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 with automatic reset
        • Solenoid valves for gas 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 manifolds
        • Dynamic distribution manifolds in brass
        • Manual distribution manifolds in brass
        • Manual distribution manifolds in technopolymer
      • Inspection wall boxes and wall ports
        Inspection wall boxes and wall ports:
        • Accessories for inspection wall box
        • Inspection wall box
      • Regulating units for radiant panel systems
        Regulating units for radiant panel systems:
        • Accessories for regulating units
        • Modulating temperature regulating units
        • Regulators
        • Spare parts for regulating units
        • Thermostatic regulating units
      • Thermo-electric actuators
        Thermo-electric actuators:
        • Control bar
        • Thermo-electric actuator (with push to fit connection)
        • Thermo-electric actuator (with threaded connection)
    • Valves and accessories for radiators
      Valves and accessories for radiators:
      • Accessories and spare parts for radiator valves
        Accessories and spare parts for radiator valves:
        • Accessories for radiator valves
        • Spare parts for radiator valves
      • Accessories and spare parts for radiators
        Accessories and spare parts for radiators:
        • Accessories for radiators
        • Drain cock for radiators
      • Convertible radiator valves
        Convertible radiator valves:
        • Control head for designer heating system valves
        • Convertible radiator valves (for copper pipe)
        • Convertible radiator valves (for steel pipe)
        • Convertible radiator valves with pre-setting (for copper pipe)
        • Convertible radiator valves with pre-setting (for steel pipe)
        • HIGH STYLE convertible radiator valves
      • Fittings
        Fittings:
        • Accessories for fittings
        • Fittings with standard threaded connections
        • Fittings with threaded connections 23 p. 1.5
      • Lockshield valves
        Lockshield valves:
        • Lockshield valves for copper pipe
        • Lockshield valves for steel pipe
      • Manual radiator valves
        Manual radiator valves:
        • Radiator valves for copper pipe
        • Radiator valves for 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 remote thermal regulation system for radiators
        • Ambient temperature sensor
        • Temperature regulation gateway
        • Wireless electronic control
      • Thermo-electric actuators
        Thermo-electric actuators:
        • Thermo-electric actuator (with push to fit connection)
        • Thermo-electric actuator (with threaded connection)
      • Thermostatic control heads
        Thermostatic control heads:
        • Accessories for thermostatic control heads
        • 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
    • Zone and motorised valves, distribution manifolds, boxes and accessories
      Zone and motorised valves, distribution manifolds, boxes and accessories:
      • Butterfly valves
        Butterfly valves:
        • Accessories for butterfly valves
        • Butterfly valves - lug type
        • Butterfly valves - wafer type
        • Rotational actuator for butterfly valves
      • Distribution manifolds with shut-off and pre-regulating valves
        Distribution manifolds with shut-off and pre-regulating valves:
        • Accessories for distribution manifolds with shut-off and pre-regulating valves
        • Pre-assembled distribution manifolds with shut-off and pre-regulating valves
        • Standard distribution manifolds with shut-off and pre-regulating valves
      • Dual distribution manifolds
        Dual distribution manifolds:
        • Accessories for dual distribution manifolds
        • Dual distribution manifolds
      • Fittings
        Fittings:
        • Fittings with standard threaded connections
        • Fittings with threaded connections 23 p. 1.5
      • Inspection wall boxes and wall ports
        Inspection wall boxes and wall ports:
        • Accessories for inspection wall box
        • Inspection wall box
        • Inspection wall port
      • Single distribution manifolds
        Single distribution manifolds:
        • Single distribution manifolds (23 p. 1.5 threaded outlets)
        • Single distribution manifolds (standard threaded outlets)
      • 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 for plug valves
        • Accessories for zone/diverter ball valves
        • Obturator valves (three-way)
        • Obturator valves (two-way)
        • Plug valves (three-way)
        • Plug valves (two-way)
        • Spare parts for obturator valves
        • Spare parts for zone/diverter ball valves
        • Thermo-electric actuator (with push to fit connection)
        • Thermo-electric actuator (with threaded connection)
        • Thermo-electric actuator for plug valves
        • Zone/diverter ball valves (three-way)
        • Zone/diverter ball valves (two-way)
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    • Caleffi Hydronic Design
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    • Domestic Water Sizer
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Fittings
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Valves and accessories for radiators /
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Fittings with threaded connections 23 p. 1.5
See all products of

Fittings with threaded connections 23 p. 1.5

679014

DARCAL, Fitting for multilayer plastic pipes for continuous high temperature use.

681000

DARCAL, Self-adjustable diameter fitting for single and multilayer plastic pipes.

437010

Compression fitting.

447010

Pre-assembled compression fitting.

438010

Compression fitting for copper pipe.

439010

Fitting for copper pipe, with gasket.

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