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 of 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 precise adaptation according to customer needs. Actuator and valve are adapted perfectly 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 because of the degree of protection IP65/IP67 and its high impact and vibration resistance.

General Technical Data

Product properties	Description
Design	Globe control valve
Nominal diameter	DN 10...DN 100, NPS 3/8...4
Flow direction	Against closing direction (below seat)
Operating pressure	0...25 bar(g), 40 bar(g) on request
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	III (DIN EN 61140)
Duty cycle	100 %
Medium temperature	-40 °C...+230 °C
Ambient temperature	-25 °C...+65 °C (only without additional modules)
Degree of protection	IP65/IP67 (DIN EN 60529), NEMA 4X

Materials

No.	Component	Material
1	Display housing/blind cover	PPS (standard), stainless steel 1.4301 (for ATEX/IECEx)
2	Actuator cover	PPS (AG2) / PC (AG3)
3	Seal	EPDM
4	Actuator housing	Powder-coated aluminium
6	Seal	EPDM
7	Actuator base	PPS (AG2) / Stainless steel 1.4308 (AG3)

Dimensions (Welded Connection)

Dimensions in mm, unless otherwise stated.

Nominal diameter	ES	LS	DIN EN ISO 1127 / ISO 4200 Series B (∅ DS / WS)	DIN 11850-2 / DIN 11866 Series A (∅ DS / WS)
DN 10	20	90	17.2 / 1.6	13 / 1.5
DN 15	20	90	21.3 / 1.6	19 / 1.5
DN 20	20	100	26.9 / 1.6	23 / 1.5
DN 25	26	130	33.7 / 2.0	29 / 1.5
DN 32	26	140	42.4 / 2.0	35 / 1.5
DN 40	26	150	48.3 / 2.0	41 / 1.5
DN 50	26	175	60.3 / 2.0	53 / 1.5

Performance Specifications

Flow Characteristics

• Equal-percentage flow characteristic according to DIN EN 60534-2-4 (linear characteristic curve on request).
• Theoretical rangeability: Kvs / Kv0.
• The globe control valve has different theoretical rangeabilities depending on the seat size.

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.

Operating limits for seat seal

• Metal seals (Class III/IV): -40 °C...+230 °C. Metallic seals are impervious even under demanding process conditions.
• PTFE (Class VI): -40 °C...+130 °C. By using plastics as sealing material, the control valves can close tightly.
• PEEK (Class VI): -10 °C...+230 °C (recommended for > +130 °C).

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. The electromotive linear actuator is designed to provide optimum efficiency. At the same time, it keeps the valve tight and in position even at the maximum specified medium pressure in a powerless standstill.