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Flowserve Digital Positioner D30

Flowserve Digital Positioner D30 is a robust, intelligent positioner with very high air capacity. Flowserve Digital Positioner D30 based on proven digital technology, Flowserve Digital Positioner D30 features a large, high-performance spool valve controlled by a unique intelligent control algorithm. Flowserve Digital Positioner D30 is a very popular product with a wide range of applications.

Product Features

• High-volume performance enabled by robust, high-capacity design that eliminates the need for boosters
• Installation and operation ease from quick calibration and friction clutch to simplify commissioning plus a preloaded spring to eliminate play in the feedback mechanism
• Broad application versatility via modular design that suits almost any control valve — small or large, rotary or linear; options also include remote mounting of positioner
• Lower maintenance costs and downtime with ValveSight DTM predictive diagnostics

The D30 is a digital positioner designed primarily for controlling modulating valves. The positioner can be used with single or double acting actuators with either rotary or linear movement. The D30 can be equipped with modules for limit switches and pressure gauges. Pressure sensors can be installed to offer advanced diagnostics. The modules can be factory assembled before delivery or fitted later. The modules for limit switches can contain one of the following:
• Two mechanical contacts
• Two proximity switches
• Two inductive sensors

Product Parameters

Product name Flowserve Digital Positioner D30
Rotation angle min 25° max 100°
Stroke From 5 mm (0.2¨)
Input signal 4-20 mA DC
Air supply 1.4-8 barg (20-115 psi) DIN/ISO 8573-1 3.2.3

Free from oil, water and moisture.

Air delivery Up to 760 nl/min @ 6 bar (29.3 scfm @ 87 psi)
Air consumption 8 nl/min @ 6 bar (0.31 scfm @ 87 psi)
Air connections ¼” G or NPT
Cable entry 2x M20x1.5 or ½” NPT
Electrical connections Screw terminals 2.5 mm2 /AWG14
Linearity <0.4%
Repeatability <0.5%
Hysteresis <0.3%
Dead band 0.1-10% adjustable
Display Graphic, view area 15 x 41 mm (0.6 x 1.6¨)
UI 5 push buttons
CE directives 93/68EEC, 89/336/EEC, 92 /31/EEC
Voltage drop, w/o HART 8 V
Voltage drop, with HART 9.4 V
Enclosure IP66
Material Die-cast Aluminum

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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