The Bürkert 20063186 (Type 3361) is an innovative electromotive 2-way globe control valve designed for demanding operating conditions. Equipped with a ball screw actuator, it positions the control cone with exceptional precision at speeds up to 6 mm/s, reacting almost delay-free to process signals. The flow-optimized valve body can be fitted with various valve seats for precise adaptation to customer needs. Its robust, IP65/IP67-rated hygienic design ensures easy cleaning and resistance to harsh environments, shocks, and vibrations. The fieldbus-compatible Type 3361 provides advanced functions for process monitoring, valve diagnostics, and predictive maintenance.

General Technical Data

Feature	Specification
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
Medium temperature	-40 °C to +230 °C
Operating voltage	24 V DC ± 10 % (maximum residual ripple 10 %)
Travel speed	6 mm/s (AG2 1300 N), 4 mm/s (AG2 2500 N), 3 mm/s (AG3)
Theoretical rangeability	Up to 50:1
Degree of protection	IP65/IP67 (DIN EN 60529), NEMA 4X

Approvals and Conformities

Depending on the specific configuration, the Type 3361 series supports various conformities including FDA and USP for food and beverage applications, drinking water suitability, and optional ATEX/IECEx explosion protection (Zone 2/22). Oxygen and hydrogen variants are also available upon request.

Materials

The Type 3361 globe control valve is constructed with high-quality materials to ensure durability and chemical resistance across various media.

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, 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)

The following dimensions apply to the body with threaded connections (G, NPT, RC). Dimensions are in mm unless otherwise stated.

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	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

Performance Specifications

Operating Limits

In addition to the maximum operating pressures, the application range of Bürkert process valves is limited by the nominal pressure in accordance with the relevant standard.

Seat Seal Selection

For tight sealing requirements, soft seals (PTFE for ≤ +130 °C, PEEK for up to +230 °C) are recommended. Metallic seals (Stainless steel) are impervious under demanding process conditions but have larger leakages (Class III/IV).

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).

The optional SAFEPOS energy-pack provides the actuator with the required energy to move the valve into a desired safety position in the event of a power failure.

Maintenance and Service

Safety Instructions

Risk of injury from high pressure. Before working on the system or device, switch off the pressure and vent or drain lines. Perform installation and maintenance work only in the isolated state.

Replacing the Control Cone

1. Set operating state to MANUAL and move the valve into the open position.
2. Switch off the supply voltage and wait until the LED illuminated ring goes out.
3. Remove the actuator from the valve body.
4. Knock out the dowel pin using a suitable pin punch and remove the control cone.
5. Attach the new control cone to the spindle, align the bores, and carefully knock in the new dowel pin.
6. Remount the actuator, apply supply voltage, and run the X.TUNE function to adjust the position control.