BURKERT 20032010 (Type 3361) is an electromotive 2-way globe control valve engineered for precision continuous control of neutral and aggressive liquids, steam, and gases in industrial processes. The unit combines an AG2 brushless electromotive linear actuator delivering 1,300 N positioning force with a DN 10 DIN EN 1092-1 PN25 flanged body in cast stainless steel CF3M. Featuring a ball-screw drive with a linear travel speed of 6 mm/s and a dead band of ±0.1%, this configuration provides rapid response to control signals with a typical full-stroke closing time of 3.4 seconds. Process pressure variations do not transfer back to the valve stem position. The screwed-in valve seat has a 10 mm orifice, delivering a nominal Kv value of 2.7 m³/h (Cv 3.1 gpm) with an equal-percentage 50:1 characteristic and Class IV metal-to-metal shut-off tightness.

This specific article includes a digital display module with operating keys, 360° LED status light ring, mechanical position indicator, and an analogue control interface with büS service communication. Flow direction is configured below the seat (2 to 1), preventing water hammer during liquid flow regulation. Without an energy storage pack, the actuator securely blocks and holds position upon total power failure.

Technical Specifications

Parameter	Specification
Product Identification	Article no. 20032010, Type 3361
Valve Design	2-way globe control valve, straight-seat body
Port Connection Size	DN 10 (NPS 3/8)
Flange Standard	DIN EN 1092-1 PN 25 (Face-to-face FTF 1 per DIN EN 558-1)
Pressure Rating	PN 25 (DIN EN 1333), Class 150 (DIN EN 1759)
Operating Pressure Range	0 to 25 bar(g)
Actuator Size & Driving Force	AG2 (actuator size 2, 1,300 N nominal force)
Actuator Drive Principle	Brushless DC motor with precision gear and ball screw
Linear Travel Speed	6 mm/s (for 1,300 N actuator force)
Typical Closing Time	3.4 s (3,400 ms)
Position Control Dead Band	± 0.1%
Flow Direction	Below seat (against closing direction, port 2 → port 1)
Orifice / Seat Size	10 mm (3/8")
Kv Value (Water)	2.7 m³/h (measured per DIN EN 60534-2-4)
Cv Value	3.1 gpm
Flow Characteristic	Equal percentage (theoretical rangeability 50:1)
Seat Leakage Class	Class IV (DIN EN 60534-4)
Operating Voltage	24 V DC ± 10% (residual ripple max. 10%)
Current Consumption	Max. 3 A at maximum load (standby consumption 2 to 5 W)
Duty Cycle	100% continuous
Protection Class (DIN EN 61140)	III
Power Failure Safety Setting	Blocked in last position (no energy storage pack fitted)
Medium Temperature Range	-10 °C to +150 °C
Ambient Temperature Range	-25 °C to +55 °C
Dynamic Viscosity Limit	Up to 600 mm²/s
Maximum Weight (Actuator)	Approx. 5.5 kg
Ingress Protection	IP65 / IP67 (DIN EN 60529), NEMA 4X

Approvals and Conformities

BURKERT 20032010 conforms to relevant European directives and holds international hazardous location and sanitary ratings:

• Explosion Protection (ATEX & IECEx): Certified for Category 3 equipment in Zone 2 (gas) and Zone 22 (dust) under certificate numbers BVS 17 ATEX E 117 X and IECEx BVS 17.0100X.
  • ATEX Marking: II 3G Ex ec IIC T4 Gc / II 3D Ex tc IIIC T135 °C Dc
  • IECEx Marking: Ex ec IIC T4 Gc / Ex tc IIIC T135 °C Dc
• Food Contact Compliance: Wetted materials comply with EC Regulation 1935/2004 according to manufacturer declaration.
• Cleaning Agent Compatibility: Certified resistant according to Ecolab test method F&E/P3-E No. 40-1.
• CE Conformity: Full compliance with applicable European standards and directives specified in the EU Declaration of Conformity.

Materials of Construction

Actuator Assembly Materials (AG2)

Item	Component	Material
1	Display housing / blind cover	PPS (standard) / Stainless steel 1.4301 (ATEX/IECEx variants)
2	Actuator cover	PPS
3	Seal	EPDM
4	Actuator housing	Powder-coated aluminium
6	Seal	EPDM
7	Actuator base	PPS

Valve Body and Wetted Components

Item	Component	Material
1	Spindle (stem)	Stainless steel 1.4401 (316) / 1.4404 (316L)
2	Spindle seal	PTFE V-rings (filled) with spring compensation
3	Spindle guide	Stainless steel 1.4404 (316L)
4	Packing gland tube	Stainless steel 1.4401 (316)
5	Body seal	Graphite or PTFE
6	Seat seal	Stainless steel 1.4571 (metal-to-metal contact)
7	Control cone	Stainless steel 1.4571
8	Valve seat	Stainless steel 1.4571 (screwed-in replaceable design)
9	O-ring (valve seat)	EPDM or PTFE
10	Valve body	Stainless steel CF3M (1.4409 / 316L cast equivalent)

Dimensions and Installation

Actuator AG2 Height Dimensions

Nominal Diameter DN	NPS	Height H1 (Standard Variant) [mm]	Height H2 (Fieldbus Variant) [mm]
10	3/8	417	489
15	1/2	417	489
20	3/4	423	495
25	1	446	518
32	1 1/4	474	546
40	1 1/2	479	551
50	2	485	557

Note on height dimensions: Dimensions exclude the closed sealing function. In the closed position, the actuator raises by approximately 2 mm.

Flanged Body Dimensions (DIN EN 1092-1 PN 25 FTF 1 per DIN EN 558-1)

Parameter	Value (DN 10)
Flange Outer Diameter (∅ DF)	90 mm
Face-to-Face Length (LF)	130 mm
Bolt Circle Diameter (∅ BF)	60 mm
Flange Thickness (AF)	16 mm
Bolt Hole Diameter (∅ D)	14 mm
Number of Bolt Holes & Orientation (A × α)	4 × 90°
Raised Face / Internal Orifice Diameter (∅ MF)	13.6 mm

Flow Characteristics and Fluidic Data

BURKERT 20032010 provides an equal-percentage flow characteristic compliant with DIN EN 60534-2-4 with a theoretical rangeability of 50:1. The relationship between stroke percentage and flow coefficient Kv (measured with water at +25 °C) for DN 10 with seat size 10 is structured below:

Stroke (%)	Kv Value [m³/h]
10%	0.11
20%	0.13
30%	0.19
40%	0.30
50%	0.48
60%	0.73
70%	1.00
80%	1.60
90%	2.30
100% (Kvs)	2.70

Operating Limits for Seat Seal

Metallic stainless steel seat seals provide tight process performance across -40 °C to +230 °C. Because metallic seals permit permissible leakage rates of 0.01% of nominal flow under Class IV (DIN EN 60534-4), an upstream or downstream shut-off valve is recommended when absolute drop-tight shut-off (Class VI) is demanded.

Electrical Connections and Control Interfaces

Article 20032010 operates on a 24 V DC power supply via M12 circular connectors. Two multipole connectors are positioned on the actuator base for standard analogue configuration:

• X1: M12 circular plug, 8-pin, A-coded (Input and output signals)
• X3: M12 circular plug, 5-pin, A-coded (Operating voltage and büS/CANopen communication)

Pin Assignment for X1 (M12 8-Pin Plug, A-Coded)

Pin	Signal Assignment
1	Digital input +
2	GND for digital input and digital outputs
3	Digital output 2 +
4	Digital output 1 +
5	Analogue output -
6	Analogue output +
7	Set-point value / Analogue input -
8	Set-point value / Analogue input +

Pin Assignment for X3 (M12 5-Pin Plug, A-Coded)

Pin	Signal Assignment
1	CAN Shield / shield
2	Operating voltage 24 V DC ± 10%
3	GND / CAN_GND
4	CAN_H
5	CAN_L

Control Signal Specifications

• Analogue Setpoint Input: 0/4 to 20 mA (input resistance 70 Ω) or 0 to 5/10 V (input resistance 22 kΩ), galvanically isolated from supply voltage and analogue output.
• Analogue Position Output: 0 to 5/10 V (max. current 10 mA) or 0/4 to 20 mA (load resistance 0 to 800 Ω).
• Digital Input: 0 to 5 V = logical "0", 10 to 30 V = logical "1".
• Digital Outputs: PNP transistor outputs, current-limited to 100 mA each.
• büS Service Interface: Digital parameterization and diagnostics using Bürkert Communicator software Type 8920 via USB-büS interface set.

Actuator Architecture and User Interface

The electromotive linear actuator consists of a brushless DC motor, planetary gear, and precision ball-screw spindle mechanism. The position sensor continuously detects actual spindle position (POS), which the internal positioner compares against setpoint value (CMD). Any control deviation (Xd1) triggers the actuating variable (CTRL) to reposition the drive without overshoot.

Status Indication and Manual Actuation Modes

• Integrated Display Module: Provides digital stroke position display, configuration menus, and manual operating modes. Four navigation buttons enable direct local control.
• 360° LED Light Ring: Positioned on the display cover, displaying valve operational status, diagnostic warnings, and end positions via programmable color patterns.
• Mechanical Position Indicator: A mechanical yellow indicator pin remains visible through the viewing window even when de-energized.
• Electrical Manual Operation: Configurable via View 1 on the display module (MANU mode) using navigation buttons to open or close the valve.
• Mechanical Manual Override: Accessible under the display module. A 3 mm Allen key couples into the drive spindle to actuate the valve mechanically in a fully de-energized state.

Mechanical Override Limit

Actuate the mechanical manual override only when the supply voltage is completely disconnected. Applying an operating torque exceeding 2 Nm when reaching valve end positions damages the mechanical override mechanism.

Installation, Maintenance, and Calibration

Installation is permitted in any mounting orientation, with the upright vertical position recommended. Piping must be cleaned and de-pressurized before installation.

Tightening Torques for Assembly and Servicing

Joint / Component	Size / Tool	Tightening Torque
Valve body to actuator connection	DN 10 / Open-end wrench	45 ± 3 Nm (33 ± 2 lbf·ft)
Valve seat installation	Seat size 10 (DN 10) / Installation tool	20 + 3 Nm
Spindle guide (lower)	ø10 mm spindle / Modified socket SW19	15 Nm
Actuator base screws (4x)	Hexalobular internal T25	5 Nm
Display module fastening screw	Hexalobular internal T20	1.1 Nm

Calibration via X.TUNE

Never initiate the X.TUNE self-calibration function under medium pressure. Pressurizing the valve during calibration leads to incorrect controller end-position detection and uncontrolled process errors.

To execute X.TUNE on units with a display module, verify line pressure is fully vented, navigate to CONFIGURATION → Position Controller → MAINTENANCE → CALIBRATION → X.TUNE, select the stainless steel seat seal material, and confirm calibration execution.