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 the highest precision. A unique feature is its high positioning speed up to 6 mm/s that 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-optimised valve body can be equipped with up to 5 different valve seats for a precise adaptation according to customer needs.

Actuator and valve are adapted perfectly to each other with a 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 are guaranteed by the proven self-adjusting packing gland with exchangeable V-seals.

Key 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
• Fieldbus-compatible (EtherNet/IP, PROFINET, Modbus TCP, EtherCAT)
• Optional safety position via SAFEPOS energy-pack in case of power failure

General Technical Data

Property	Specification
Design	Globe control valve
Nominal diameter	DN 10 to 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) (optional)
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)
Operating voltage	24 V DC ± 10 % (maximum residual ripple 10 %)
Protection class	IP65/IP67 (DIN EN 60529), NEMA 4X
Medium temperature	-40 °C to +230 °C
Ambient temperature	-25 °C to +65 °C (only without additional modules)

Safety Setting

With the optional SAFEPOS energy-pack, the valve can be set to an open, closed, or freely programmable position in case of power failure. Without the energy storage, the valve is blocked in its last position.

Approvals and Conformities

Depending on the variant, the Type 3361 complies with various standards and approvals:

• Explosion protection: ATEX / IECEx (Zone 2/22)
• North America: UL Listed for USA and Canada
• Drinking water: Suitable for use in drinking water applications (up to +85 °C)
• Foods and beverages / Hygiene: FDA, USP, EC Regulation 1935/2004, China food GB Standards
• Others: Suitability for Oxygen, Hydrogen, and TA Luft

Materials

Component	Material
Actuator housing	Powder-coated aluminium
Display housing / blind cover	PPS (standard), stainless steel 1.4301 (for ATEX/IECEx)
Valve body	Stainless steel CF3M
Spindle	Stainless steel 1.4401 (316) / 1.4404 (316L)
Spindle seal	PTFE V-seals (filled) with spring compensation
Seat seal	Stainless steel 1.4571 (optionally hardened), PTFE, or PEEK seal washer
Control cone / Valve seat	Stainless steel 1.4571 (optionally hardened)

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.

Temperature Limits

The maximum permissible temperature for the environment and the medium are dependent on each other. The maximum allowable temperature curves of different device variants are determined for maximum operating conditions (maximum operating pressure and motor power).

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).

Design of electromotive valve Type 3361 AG2

Design of electromotive valve Type 3361 AG3