Siemens ACVATIX VPF43 Series, Руководство пользователя

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Siemens Combi valves PN 16 with flanged connections CE1N4315en
Building Technologies 2017-10-25
The medium entering the Combi valve (inlet port A) first passes through the control
valve (5) with a linear characteristic and a stroke of 20 mm (DN
50…80)
respectively 40 mm (DN
100…150). The actuator (not shown here) opens and
accurately positions the control valve. Then, the medium flows through the variable
presetting opening (4) which is connected to the ring with dial (1) for presetting the
desired maximum volumetric flow.
Before leaving the Combi valve (outlet port B), the medium passes through a built-
in mechanical differential pressure controller (3). This differential pressure
controller is the heart of the Combi valve and ensures that the selected volumetric
flow is maintained across the whole working range and independent of the inlet
pressure p
1
.
The Combi valve VPF43.. is equipped with two pressure test points (P+, P-) for
measuring and monitoring the differential pressure across the valve during
commissioning. For that purpose, the electronic manometer ALE10 can be used.
Manual control is only possible with mounted actuator.
The advantages of Combi valves are that:

once the flow limiter is set to design flow, the hydraulic circuit self balances,
even when changes to the system are made, such as additions.

for any heat demand the Combi valve with mounted actuator can be set to the
desired volumetric flow and will be relatively constant regardless of pressure
fluctuations in the system.
Constant flow regardless of pressure changes in the system reduces hydraulic
interdependence and leads to a more stable control.
Accessories
Product no. Stock no. Beschreibung
ALE10 ALE10
Electronic manometer excluding measuring lines and measuring tips.
Measuring range 0 .. 700 kPa. A differential pressure of more then
1000 kPa will destroy the pressure sensor.
For measuring the differential pressure between P+ and P- of the
Combi valves (refer to diagram under "Functional principle" on page 4).
Functions of the manometer:

Start/stop

Automatic zero position

Backlit display

Display: Out

outside the measuring range

Holding function
ALE11 ALE11
Measuring lines and straight measuring tips for use with Siemens
Combi valves.
Equipped with G ⅛” connection with 2 x 40 mm needles.
ALP46 S55264-V115
Blanking plugs for P/T ports
Connection to valve body: G ¼“ to ISO 228, inclusive O-ring
ALP47 S55264-V116
Drain ball valve inclusive O-ring
Port: External threads G ½“ to ISO 228
Connection to valve body: G ¼“ to ISO 228, inclusive O-ring
ALP48 S55264-V117
Combined P/T port and drain ball valve with blue ribbon
Port: External threads G
⅛“ to ISO 228
Connection to valve body: G ¼” to ISO 228, inclusive O-ring
ALP49 S55264-V118
Long P/T ports (set of 2 pieces)
Set contains 1 piece each with a red and blue ribbon.
Port: External threads G
⅛“ to ISO 228
Connection to valve body: G ¼“ to ISO 228, inclusive O-ring
Medium flow
Pressure test points
Manual control
Advantages