BURKERT 329673 (Type 3361) is an innovative electromotive 2-way globe control valve designed for demanding operating conditions. The electromotive actuator with a ball screw positions the control cone with the highest precision. A unique feature is its high positioning speed of up to 6 mm/s, which reacts almost delay-free to process signals and can be varied according to customer demands. Pressure variations or shocks in the medium are not transferred to the valve position. Each flow-optimized valve body can be equipped with up to 5 different valve seats for precise adaptation to customer needs.

The actuator and valve are perfectly adapted to each other with a closed design and robust surface, ensuring the hygienic requirements of fast and residue-free cleaning. Harsh environmental conditions are no problem for the Type 3361 due to its IP65/IP67 degree of protection and high impact and vibration resistance. The fieldbus-compatible Type 3361 provides many helpful functions for process monitoring, valve diagnostics, and predictive maintenance.

General Technical Data

Product Properties	Description
Design	Globe control valve
Nominal diameter	DN 10...DN 100, NPS 3/8...4
Safety setting (power failure)	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

Performance Data	Description
Operating pressure	0...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...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)

Electrical Data	Description
Operating voltage	24 V DC ± 10 % (maximum residual ripple 10 %)
Protection class	III (DIN EN 61140)
Duty cycle	100 %
Standby consumption	2...5 W

Communication and Control	Description
Standard signal (analogue)	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

Medium Data	Description
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
Viscosity	Up to 600 mm²/s

Approvals and Conformities

• Explosion Protection: Optional ATEX/IECEx (Category 3 device suitable for zone 2/22).
• 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 compliant, USP Class VI, EC Regulation 1935/2004, China food GB Standards.
• Others: Suitability for Oxygen, Hydrogen, and TA Luft.

Materials

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 seal washer
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

Actuator

AG2 Actuator

AG3 Actuator

Body with Flange Connection

Body with Threaded Connection

Body with Welded Connection

Body with Clamp Connection

Performance Specifications

Flow Characteristics

The globe control valve features an equal-percentage flow characteristic according to DIN EN 60534-2-4 (linear characteristic curve on request). The theoretical rangeability is up to 50:1 depending on the seat size.

Operating Limits for Seat Seal

Tight sealing required	Leakage class (DIN EN 60534-4)	Medium temperature	Seat seal
No	III/IV (metal seals)	-40 °C to +230 °C	Stainless steel
No	For demanding process conditions (cavitation, erosion)	-	Hardened stainless steel
Yes	VI (soft seals)	-40 °C to +130 °C	PTFE
Yes	VI (soft seals)	-10 °C to +230 °C	PEEK

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. A positioner and a process controller are available as controller variants.

SAFEPOS energy-pack

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