Product catalog Product catalog - Unicom

Control Valves, universal
Control Valves, universal
Alwa-Kombi-4 (V1800) Circulation throttle valve
Throttle and shut-off valve for potable water circulation loops for balancing according to DVGW
worksheets W551 and W552. Retrofittable automatic temperature control with support of thermal
disinfection. Draining support with adapter (accessory). Valve housing without side connections for
easy insulation. Cavity-free insert with maintenance-free spindle sealing. Handwheel thread isolated
from the flow. Visible digital pre-setting dial with concealed pre-setting ring. Very precise due to factory
calibration.
For potable water circulation systems.
Approvals DVGW approved, conforms with KTW requirements
Materials Valve housing and all parts with contact to the flow made of corrosion
resistant red bronze
Body pattern Y-pattern
Pre-setting yes
Position indication Visible, digital pre-setting display with concealed pre-setting ring
Automatic balancing support
yes
Draining/filling support yes
Integrated non-return device
no
Max. media temperature 130 o C
Static pressure PN16
Additional description Suitable connections see 'Connections for Alwa-valves'.
Alwa-Kombi-4 with external threads
DN size Port diameter Connection size Port connection type Kvs value Type
mm inch mm
15 G3/4 – external threads 2,7 V1810X0015
20 G1 – external threads 6,4 V1810X0020
25 G1 1/4 – external threads 6,8 V1810X0025
32 G1 1/2 – external threads 16 V1810X0032
40 G1 3/4 – external threads 16 V1810X0040
Alwa-Kombi-4 with internal threads
DN size Port diameter Connection size Port connection type Kvs value Type
mm inch mm
15 R1/2 – internal threads 2,7 V1810Y0015
20 R3/4 – internal threads 6,4 V1810Y0020
25 R1 – internal threads 6,8 V1810Y0025
32 R1 1/4 – internal threads 16 V1810Y0032
40 R1 1/2 – internal threads 16 V1810Y0040
Alwa-Kombi-4 with fitted Mapress fittings
DN size Port diameter Connection size Port connection type Kvs value Type
mm inch mm
15 – 15 Mapress fittings 2,7 V1816Y0015
15 – 18 Mapress fittings 2,7 V1816Y0018
20 – 22 Mapress fittings 6,4 V1816Y0020
25 – 28 Mapress fittings 6,8 V1816Y0025
32 – 35 Mapress fittings 16 V1816Y0032
40 – 42 Mapress fittings 16 V1816Y0040
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