Bürkert Type 3361 electromotive 2-way globe control valve is the solution when it comes to control tasks under demanding operating conditions. The electromotive actuator with ball screw positions the control cone with highest precision. A unique feature is its high positioning speed up to 6 mm/s that reacts almost delay-free to process signals and that can be varied according to customer demands. Pressure variations or shocks in the medium are not transferred to the valve position.

Each flow optimised valve body can be equipped with up to 5 different valve seats for a precise adaptation according to customer needs. If necessary, the safety position can be approached by an optional energy storage in case of power failure. Actuator and valve are adapted perfectly to each other with closed design and robust surface. This ensures the hygienic requirements of fast and residue-free cleaning. Harsh environmental conditions are no problem for the Type 3361 because of the degree of protection IP65/IP67 and its high impact and vibration resistance.

Unrivalled service life and tightness is guaranteed by the proven self-adjusting packing gland with exchangeable V-seals. The fieldbus-compatible Type 3361 provides many helpful functions for process monitoring, valve diagnostics and predictive maintenance and thus offers the decisive advantage of a modern process automation.

Combinations

The Type 3361 can be combined with the Type ME61 EDIP process display, Type ME63 Industrial Ethernet gateway, Type ME43 Fieldbus gateway, and Type 8098 FLOWave SAW flowmeter.

General Technical Data

Product properties	Description
Design	Globe control valve
Nominal diameter	DN 10 to DN 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)
Weight	AG2: up to 5.5 kg, AG3: up to 16 kg (excluding valve body)
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)
Kvs value	0.1 to 140 m³/h
Flow characteristic	Equal percentage, linear (on request)
Seat leakage	Class III, IV and VI (DIN EN 60534-4)
Theoretical rangeability	Up to 50:1
Travel speed	6 mm/s (AG2 1300 N), 4 mm/s (AG2 2500 N), 3 mm/s (AG3 7700/10000 N)
Operating voltage	24 V DC ± 10 % (maximum residual ripple 10 %)
Protection class	III (DIN EN 61140)
Duty cycle	100 %
Standard signal	Set-point value: 0/4...20 mA, 0...5/10 V and binary input
Fieldbus (digital)	Bürkert system bus (büS), CANopen, EtherNet/IP, PROFINET, Modbus TCP, EtherCAT
Operating medium	Steam, neutral gases, water, alcohols, oils, fuels, hydraulic fluids, salt solutions, organic solvents, oxygen, hydrogen, lyes
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

Approvals and Conformities

• Explosion protection: Optional ATEX / IECEx (Zone 2/22, Category 3).
• North America: Optional UL Listed for USA and Canada (UL 61010-1).
• Drinking water: Optional suitability for drinking water applications up to +85 °C.
• Foods and beverages: FDA, USP Class VI, EC Regulation 1935/2004, China food GB Standards.
• Others: Oxygen suitability, Hydrogen suitability, TA Luft.

Materials

No.	Component	Material
1	Display housing/blind cover	PPS (standard), stainless steel 1.4301 (for ATEX/IECEx)
2	Actuator cover	PPS (AG2) / PC (AG3)
3	Seal	EPDM
4	Actuator housing	Powder-coated aluminium
6	Seal	EPDM
7	Actuator base	PPS (AG2) / Stainless steel 1.4308 (AG3)

No.	Component	Material
1	Spindle	Stainless steel 1.4401 (316)/1.4404 (316L)
2	Spindle seal	PTFE V-seals (filled) with spring compensation
3	Spindle guide	Stainless steel 1.4404 (316L)
4	Packing gland tube	Stainless steel 1.4401 (316)
5	Seal valve body	Graphite or PTFE
6	Seat seal	Stainless steel 1.4571 (optionally hardened), PTFE or PEEK
7	Control cone	Stainless steel 1.4571 (optionally hardened)
8	Valve seat	Stainless steel 1.4571 (optionally hardened)
9	O-ring valve seat	EPDM or PTFE
10	Valve body	Stainless steel CF3M

Dimensions

Note: Dimensions in mm, unless otherwise stated. The Type 3361 globe control valve is supplied with different port connections (flange, thread, weld end and clamp connections).

Product Design and Assembly

The electromotive linear drive consists of a brushless DC motor, a gear and a spindle system that transfers the force to the closing element. The integrated electronics are controlled either by standard signals or via a fieldbus (digital). A positioner and a process controller are available as controller variants.

SAFEPOS energy-pack

The optional energy storage device SAFEPOS energy-pack is available for the device. If the supply voltage fails, it supplies the actuator with the energy required to move the valve into the desired position, which can be set in the menu.

Integrated Position Controller

The position of the actuator (stroke) is controlled according to the position set-point value. The position set-point value is either given by an external standard signal (analogue) or via a fieldbus (digital). The displacement transducer records the actual position (POS) of the electric linear actuator. The positioner compares the actual position value with the position set-point value (CMD) specified as standard signal.

Integrated Process Controller (Optional)

The additionally implemented PID controller allows process control. The set-point position of the valve is calculated from the external signal (e.g. level, pressure, flow rate, temperature) for the process set-point and the actual process value via the control parameters (PID controller).