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Flowserve Digital Positioner D20

Flowserve Digital Positioner D20 is a compact digital positioner that is suitable for linear and rotary actuators in single-acting applications. Flowserve Digital Positioner D20 can perform better process control with very high accuracy even on the smallest valve. Flowserve Digital Positioner D20 has additional switches and 4-20 mA position feedback options. Flowserve Digital Positioner D20 has IS, NI and explosion-proof versions.

Product Features

• Installation and operation ease from friction clutch, compact design, and single button quick auto-calibration feature that tunes the D20 in seconds
• Broad application versatility made possible by flexible design that allows mounting to VDI/VDE 3845 (rotary) and VDI/VDE 3847 (linear with integrated tubing) standards
• ATEX, IECEx, CSA and FM approvals available with some configurations

The PMV D20 is a two-wire loop powered, 4-20 mA input digital valve positioner. The PMV D20 positioner controls actuators with linear and rotary mountings. The PMV D20 is completely powered by the 4-20 mA input signal. The minimum input signal required to function is 3,6 mA. As an option the D20 can be equipped with HART protocol to allow bidirectional communication. Since the positioner is insensitive to supply pressure changes and can handle supply pressures from 1,5 to 6 barg (22 to 87 psig), a supply regulator is usually not required; however, in applications where the supply pressure is higher than the maximum actuator pressure rating a supply regulator is required to lower the pressure to the actuator’s maximum rating (not to be confused with operating range). A coalescing air filter is recommended for all applications due to the close tolerances in the positioner.

PMV D20 positioner accessories: Optional analog feedback system as well as limit switch unit and a directly attachable double acting module.

Product Parameters

Product name Flowserve Digital Positioner D20
Input signal 4-20 mA
Current supply min. 3.6 mA
Current supply Max. 150 mA
Load Standard 400 ohm @ 20 mA
Load HART 470 ohm @ 20 mA
User Interface D20 Single push button, LEDs
Voltage drop Standard 8 VDC @ 20mA
Voltage drop HART 9.4 VDC @ 20mA
Angle of rotation Min 0 – 40°
Angle of rotation Max 0 – 90°
Air supply range 1.5 – 6 bar / 22 – 87 psi
Output 0-100% of air supply pressure
Ingress protection IP66 / Nema 4X
Operating humidity 0–100% rh non-condensing
Air connections 1/4” NPT
Linearity <1%
Sensitivity <0.05%
Resolution <0.1%
Repeatability <0.2%
Hysteresis + dead band <0.5%
Temp effect <0.1%/10K
Mounting position effect <0.2%
Weight 1.4 kg / 3.1 lbs

Application and After-Sales Service

The main application areas of valve positioners include:
1. Coal gasification project
2. Clean energy gasification unit
3. Electricity
4. Hydrocarbons
5. Water supply and water treatment
6. Pulp and paper
7. Industrial environment
8. Food and beverage
9. Life sciences and other fields

After-sales service

Online support and Video technical support.


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