Burkert 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.

Product Features

• Highly precise, dynamic closed-loop control
• Weather, impact and vibration resistant design
• Several Kvs values per port size due to removable valve seats
• Position controller and process controller available
• Hydrogen and Oxygen variants available

General Technical Data

Property	Value
Design	Globe control valve
Nominal diameter	DN 10 to DN 100, NPS 3/8 to 4
Flow direction	Against closing direction (below seat)
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)
Medium temperature	-40 °C to +230 °C
Ambient temperature	-25 °C to +65 °C (without additional modules)
Operating voltage	24 V DC ± 10 % (maximum residual ripple 10 %)
Protection class	IP65/IP67 (DIN EN 60529), NEMA 4X

Safety Setting

In case of power failure, devices with the optional SAFEPOS energy-pack can move to an open, closed, or freely programmable position. Without the energy storage, the valve remains blocked in its last position.

Approvals and Conformities

• Explosion Protection (Optional): ATEX / IECEx Category 3 device suitable for zone 2/22.
• North America: Actuators UL Listed for the USA and Canada (UL 61010-1).
• Drinking Water: Suitable for use in drinking water applications up to +85 °C.
• Foods and Beverages / Hygiene: FDA compliant, USP Class VI biocompatible, EC Regulation 1935/2004, and China food GB Standards.
• Special Media: Tested for suitability with gaseous oxygen and hydrogen.

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 (Threaded Connection)

DN	NPS	G	NPT	RC	LM	AF
10	3/8	12	10.3	10.1	65	27
15	1/2	14	13.7	13.2	65	27
20	3/4	16	14.0	14.5	75	34
25	1	18	16.8	16.8	90	41
32	1 1/4	20	17.3	19.1	110	50
40	1 1/2	22	17.3	19.1	120	55
50	2	24	17.6	23.4	150	70

(Note: Dimensions in mm. Flange, welded, and clamp connections are also available.)

Performance Specifications

Flow Characteristics

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

Operating Limits for Seat Seal

• Metal seals (Class III/IV): -40 °C to +230 °C. Impervious even under demanding process conditions. Hardened cones and seats can be used for cavitation or abrasive media.
• Soft seals (Class VI): PTFE (-40 °C to +130 °C) or PEEK (-10 °C to +230 °C). Allows the control valves to close tightly. Not recommended in cases of increased erosion.

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 (analogue) or via a fieldbus (digital). A positioner and a process controller are available as controller variants. The valve position can be changed manually via the electrical manual control or via a mechanical manual override if no supply voltage is available.