Skip Ribbon Commands
Skip to main content
  • English
​This extension for Google Chrome will allow you to click on the links in the PDF CAD files and open the related documents from your browser.

Alwa-Kombi-4 (V1800) Circulation throttle valve

Alwa-Kombi-4 (V1800) Circulation throttle valve

The Alwa-Kombi-4 is used as throttle valve for hydronic balancing of warm potable water circulation systems...

View Products   View Related Parts

Product Description

The Alwa-Kombi-4 is used as throttle valve for hydronic balancing of warm potable water circulation systems.To achieve a hydronic balance the flow in the circulation pipe is throttled by manually presetting the valve. The valve can also be equipped with a thermal actuator which allows a regulation of the water temperature in the circulation system to the exact degree. The thermal actuator can be installed without interruption of the warm water supply. When the thermal actuator 50 - 60 C (122 - 140 F) is used, a thermal disinfection according to DVGW worksheet W551 and W553 is supported. Hydronic balance is also retained during the thermal disinfection process to ensure disinfection of all pipelines and risers.

Technical Properties

Approvals
  • DVGW
  • WRAS
Nominal pressure PN16
Pre-setting Yes
Max. media temperature 130 oC
Body pattern Y-pattern
Materials

Valve housing made of dezincification-resistant brass
Position indication Visible, digital pre-setting display with concealed pre-setting ring
Automatic balancing support Yes
Integrated non-return device No
Draining/filling support Yes
Additional Descriptions

WRAS appoval up to 85 oC, Suitable connections see 'Connections for Alwa-valves'.
Features
  • Meets KTW requirements
  • For regulation according to DVGW worksheets W551 and W553
  • Valve housing and all parts with flow-contact made of corrosion-resistant, dezincification-resistant brass
  • Retrofittable automatic temperature-control with support of thermal disinfection
  • Draining option with retrofittable and removable draining adapter
  • No additional side connections to valve housing
  • Cavity-free cartridge with maintenance-free spindle sealing
  • Spindle thread is isolated from the flow
  • Seat sealing made of PTFE
  • Visible, digital presetting dial with concealed presetting handwheel
  • High accuracy due to factory calibration to every single valve

Certifications and Awards

Related Material

Products

Product Type Connection size
 DN size
 Port connection
 Port diameter
 Kvs value
Alwa-Kombi-4 with external threads

V1810X0015		 15 mm external threads G3/4 inch 2.7

V1810X0020		 20 mm external threads G1 inch 6.4

V1810X0025		 25 mm external threads G1 1/4 inch 6.8

V1810X0032		 32 mm external threads G1 1/2 inch 16

V1810X0040		 40 mm external threads G1 3/4 inch 16
Alwa-Kombi-4 with internal threads

V1810Y0015		 15 mm internal threads R1/2 inch 2.7

V1810Y0020		 20 mm internal threads R3/4 inch 6.4

V1810Y0025		 25 mm internal threads R1 inch 6.8

V1810Y0032		 32 mm internal threads R1 1/4 inch 16

V1810Y0040		 40 mm internal threads R1 1/2 inch 16
Alwa-Kombi-4 with fitted Mapress fittings

V1816Y0015		 15 mm 15 mm Mapress fittings 2.7

V1816Y0018		 18 mm 15 mm Mapress fittings 2.7

V1816Y0020		 22 mm 20 mm Mapress fittings 6.4

V1816Y0025		 28 mm 25 mm Mapress fittings 6.8

V1816Y0032		 35 mm 32 mm Mapress fittings 16

V1816Y0040		 42 mm 40 mm Mapress fittings 16
Alwa-Kombi-4 with fitted Sanpress fittings

V1817Y0015		 15 mm 15 mm Sanpress fittings 2.7

V1817Y0018		 18 mm 15 mm Sanpress fittings 2.7

V1817Y0020		 22 mm 20 mm Sanpress fittings 6.4

V1817Y0025		 28 mm 25 mm Sanpress fittings 6.8

V1817Y0032		 35 mm 32 mm Sanpress fittings 16

V1817Y0040		 42 mm 40 mm Sanpress fittings 16

Accessories and replacement parts

Accessories

Image Description Product Type Downloads
Union nut, sealing and red bronze tailpiece for external threads, DN15 VA7400A015  
Union nut, sealing and red bronze tailpiece for external threads, DN15 VA7400A016  
Union nut, sealing and red bronze tailpiece for external threads, DN20 VA7400A018  
Union nut, sealing and red bronze tailpiece for external threads, DN20 VA7400A020  
Union nut, sealing and red bronze tailpiece for external threads, DN25 VA7400A025  
Union nut, sealing and red bronze tailpiece for external threads, DN32 VA7400A032  
Union nut, sealing and red bronze tailpiece for external threads, DN40 VA7400A040  
Union nut, sealing and externally threaded red bronze tailpiece for external threads DN15 VA7401A015  
Union nut, sealing and externally threaded red bronze tailpiece for external threads DN20 VA7401A020  
Union nut, sealing and externally threaded red bronze tailpiece for external threads DN25 VA7401A025  
Union nut, sealing and externally threaded red bronze tailpiece for external threads DN32 VA7401A032  
Union nut, sealing and externally threaded red bronze tailpiece for external threads DN40 VA7401A040  
Union nut with Mapress-fitting for external threads, DN15 VA7403A015  
Union nut with Mapress-fitting for external threads, DN15 VA7403A018  
Union nut with Mapress-fitting for external threads, DN20 VA7403A020  
Union nut with Mapress-fitting for external threads, DN25 VA7403A025  
Union nut with Mapress-fitting for external threads, DN32 VA7403A032  
Union nut with Mapress-fitting for external threads, DN40 VA7403A040  
Temperature-controlled actuator for 50...60 degree C (122...140 degree F) temperature range, conforms with DVGW, W551 and W552 VA2400A002  
Temperature-controlled actuator for 40...65 degree C (104...149 degree F) temperature range VA2400B002  
Draining Adapter for all types and sizes VA3400A001  
Thermometer TH07K  
Insulation shells for valve DN15 VA2510C015  
Insulation shells, for valves DN20 VA2510C020  
Insulation shells, for valves DN25 VA2510C025  
Insulation shells, for valves DN32 VA2510C032  
Insulation shells, for valves DN40 VA2510C040  
Insulation shells, for valves DN50 VA2510C050  
Sampling valve. For all sizes. Only in conjunction with drain adapter VA3400A001 VA3400C001  
Sanpress red bronze crimp fitting with sealing, DN15 VA7404A015  
Sanpress red bronze crimp fitting with sealing, DN15 VA7404A018  
Sanpress red bronze crimp fitting with sealing, DN20 VA7404A020  
Sanpress red bronze crimp fitting with sealing, DN25 VA7404A025  
Sanpress red bronze crimp fitting with sealing, DN32 VA7404A032  
Sanpress red bronze crimp fitting with sealing, DN40 VA7404A040  
Union nut, sealing and internally threades red bronze tailpiece, DN15 VA7405A015  
Union nut, sealing and internally threades red bronze tailpiece, DN20 VA7405A020  
Union nut, sealing and internally threades red bronze tailpiece, DN25 VA7405A025  
Union nut, sealing and internally threades red bronze tailpiece, DN32 VA7405A032  
Union nut, sealing and internally threades red bronze tailpiece, DN40 VA7405A040