Burkert Type 3361 electromotive 2-way globe control valve controls processes under demanding operating conditions. The electromotive actuator with ball screw positions the control cone with a positioning speed up to 6 mm/s and a position control dead band of ± 0.1 %. Pressure variations in the medium are not transferred to the valve position. The flow-optimized valve body can be equipped with up to 5 different valve seats per port size. The optional SAFEPOS energy-pack approaches a safe position in case of power failure. The device features an IP65/IP67 degree of protection and a self-adjusting packing gland with exchangeable V-seals.

General Technical Data

Product properties	Specification
Design	Globe control valve
Nominal diameter	DN 10 to 100, NPS 3/8 to 4
Safety setting	With SAFEPOS energy-pack: open, closed or freely programmable. Without: blocked in last position
Flow direction	Against closing direction (below seat)
Controller variant	Positioner or process controller (option)
Operating pressure	0 to 25 bar(g), 40 bar(g) on request. Vacuum variant down to -0.9 bar(g)
Nominal pressure	PN 25/PN 40 (DIN EN 1333), Class 150 (DIN EN 1759)
Flow characteristic	Equal percentage, linear (on request)
Seat leakage	Class III, IV and VI (DIN EN 60534-4)
Travel speed	6 mm/s (AG2 1300 N), 4 mm/s (AG2 2500 N), 3 mm/s (AG3 7700 N and 10000 N)
Operating voltage	24 V DC ± 10 % (maximum residual ripple 10 %)
Medium temperature	-40 °C to +230 °C
Ambient temperature	-25 °C to +65 °C (without additional modules)
Degree of protection	IP65/IP67 (DIN EN 60529), NEMA 4X

Actuator Sizes

AG2: actuator size 2 with a nominal force of 1300 or 2500 N for seat size 3 to 50. AG3: actuator size 3 with a nominal force of 7700 or 10000 N for seat size 40 to 100.

Approvals and Conformities

• Explosion protection: Optional ATEX/IECEx (Category 3 device suitable for zone 2/22).
• North America: Optional UL Listed for the USA and Canada (UL 61010-1).
• Drinking water: Optional suitability for drinking water applications up to +85 °C.
• Foods and beverages: FDA, USP, EC Regulation 1935/2004, and China food GB Standards compliant variants available.
• Gases: Optional variants suitable for oxygen and hydrogen.

Materials

Component	Material
Display housing/blind cover	PPS (standard), stainless steel 1.4301 (for ATEX/IECEx)
Actuator cover	PPS (AG2), PC (AG3)
Actuator housing	Powder-coated aluminium
Actuator base	PPS (AG2), Stainless steel 1.4308 (AG3)

Component	Material
Spindle	Stainless steel 1.4401 (316)/1.4404 (316L)
Spindle seal	PTFE V-seals (filled) with spring compensation
Valve body	Stainless steel CF3M
Seat seal	Stainless steel 1.4571 (optionally hardened), PTFE or PEEK seal washer

Dimensions

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

Note: Dimensions without sealing function; the actuator is raised by approx. 2 mm in the closed position.

Electrical Control and Interfaces

The position of the actuator is regulated according to the position set-point value. The position set-point value is specified either by an external standard signal or via a fieldbus (digital).

• Analogue control: 0/4 to 20 mA, 0 to 5/10 V.
• Fieldbus (optional): EtherNet/IP, PROFINET, Modbus TCP, EtherCAT integrated in an additional module with 2 fieldbus connections (4-pin M12 circular sockets).

Product Design and Assembly

• Display module (optional): Robust display module configures and displays all required functions.
• Mechanical manual override: Located under the blind cover or display module. Ensures the actuator can be operated if the power supply fails.
• 360° LED light ring: Indicates device status, valve end position, and operating state.
• SAFEPOS energy-pack (optional): Supplies the actuator with energy to move the valve into a desired safety position if the supply voltage fails. Lifespan up to 10 years depending on operating conditions.

Maintenance and Service

WARNING

Risk of injury from high pressure. Before working on the system or device, switch off the pressure and vent or drain lines.

Running the X.TUNE Function

When the X.TUNE function is run, the position control is adjusted to the physical stroke of the actuating element used. The X.TUNE function must be run again only when the actuator has been removed afterwards or the valve body has been changed.

DANGER

Never run the X.TUNE under medium pressure. If the X.TUNE is run under medium pressure, the controller will be incorrectly adjusted, resulting in an uncontrolled process.

To run X.TUNE using the device buttons (located under the dummy cover):

1. Ensure no medium pressure is applied.
2. Simultaneously hold down the OPEN and CLOSE buttons for 5 s.
3. The LED illuminated ring is lit orange during the process.