FLOW CONTROL
POSIMATIC
COMPACT POSITIONER
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| Pressure operated 2 or 3-way proportional valves equipped with Posimatic or
Compact Positioner offer a compact solution and are simple to install and easy to
adjust.
These valves can be used in many processes: sequential control systems, regulation in
open and closed loop, flow or pressure control by servo-adjustment of the disc stroke.
In installations where it is necessary to adapt process parameters directly on site, the
Posimatic positioner mounted on a series 290 - 390, 2 or 3-way valve allows for a
large range of flow characteristics. The system is easily programmable by 4 data
entry keys, a pop up menu and an alphanumeric LCD screen.
For machinery where space is at a premium, the Compact positioner, mounted
directly on the valve, represents a simple and economic solution.
Each valve equipped with a positioner is accompanied by a test certificate
showing its calibration curve, guaranteeing the linearity of the characteristic "setpoint/
opening". |
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| The 2-way 290 PD valves are equipped with a
profiled disc. Its parabolic design allows the Kv
to be directly proportional to the disc raising. |
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OPERATING PRINCIPLE
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Closed
The profiled disc is bended down
and the flow from port 2 to port 1 is
released
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Half length stroke
The parabolic design of the profiled
disc allows the Kv flow to be proportional
to the disc raising.
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Open
The position of the profiled disc is
actuated by two solenoid valves
which give or remove air.
The profiled disc is lifted and the flow
from port 2 to port 1 is operated.
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| TECHNICAL CHARACTERISTICS |
| Fluids : |
Air, gases, liquids and steam |
| Pressure range: |
0 to 16 bar |
| Ports: |
G 1/8 (Compact Positionner)
G 1/4 (Posimatic)
various pad mounting versions
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| Flow: |
77 to 1233 l/min |
| Construction : |
(Parabolic piston - 2/2 version only) |
| Actuation : |
Pulsed 2/2 or 3/2-way valves |
| Set-point: |
0-10 V, 0-20mA, 4-20 mA |
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| Advantages : |
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Two options available in case of loss
of voltage (Compact Positioner):
- Maintenance of pressure
- Exhaust of outlet |
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Minimum hysteresis |
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Compacity, simplicity
(Compact Positioner) |
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Standard filtration at 50 µm |
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Manual piloting of the valve (Posimatic) |
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Easily programmable (Posimatic):
(4 data entry keys, menu, LCD
screen) |
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Single or double acting (Posimatic) |
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Valves range:
Type: 2/2, 3/2 NC
Nominal diameter: 15 to 65 mm
Differential pressure: 0 - 16 bar
Pipe connections: threaded, butt welding, clamp,
flange, bronze, stainless steel body. |
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Proportional technology
