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 (SAFEPOS energy-pack) 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.

General Technical Data

Feature	Specification
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 position. Without: blocked in last position.
Flow direction	Against closing direction (below seat)
Operating pressure	0...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)
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)
Operating voltage	24 V DC ± 10 % (maximum residual ripple 10 %)
Medium temperature	-40 °C...+230 °C
Degree of protection	IP65/IP67 (DIN EN 60529), NEMA 4X

Note on Actuator Sizes

• AG2: actuator size 2 with a nominal force of 1300 or 2500 N for seat size 3…50
• AG3: actuator size 3 with a nominal force of 7700 or 10000 N for seat size 40…100

Approvals and Conformities

The Type 3361 is available with various approvals and conformities to suit demanding applications:

• Explosion Protection: ATEX / IECEx (Zone 2/22, Ex ec IIC T4 Gc / Ex tc IIIC T135 °C Dc).
• North America: UL Listed for the USA and Canada (UL 61010-1).
• Drinking Water: Suitable for use in drinking water applications (TrinkwasserV), up to +85 °C.
• Foods and Beverages / Hygiene: FDA, USP (biocompatible), 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)
Spindle	Stainless steel 1.4401 (316) / 1.4404 (316L)
Spindle seal	PTFE V-seals (filled) with spring compensation
Valve body	Stainless steel CF3M
Seat seal	Stainless steel 1.4571 (optionally hardened), PTFE or PEEK seal washer

Performance Specifications

Flow Characteristics

The globe control valve has different theoretical rangeabilities depending on the seat size (up to 50:1). Equal-percentage flow characteristic according to DIN EN 60534-2-4 is standard, with linear characteristic curves available on request.

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. Contact your Bürkert sales department for deviating operating conditions.

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.

Fieldbus Interfaces (Optional)

The fieldbus gateway for EtherNet/IP, PROFINET, Modbus TCP and EtherCAT is integrated in an additional module. It has 2 fieldbus connections with 4-pin M12 circular sockets. The gateway cannot be retrofitted in the field.

Safety Position via Energy Storage (Optional)

The safety starting positions in case of power interruption is realised with the optional energy storage SAFEPOS energy-pack. The desired position is set via the menu (open, closed, or any desired intermediate position). The energy storage device is fully charged and ready for operation after a maximum of 120 seconds.