Bürkert 20074374 (Type 3361) is an innovative electromotive 2-way globe control valve designed for demanding operating conditions. The electromotive actuator with a 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-optimized valve body can be equipped with up to 5 different valve seats for 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 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.

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
• Safety position via optional energy storage in case of power failure

General Technical Data

Property	Value
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)
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
Dead band of the position control	± 0.1 %

Materials

Actuator AG2 Materials

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

Valve Body 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: Body with Flange Connection

Dimensions in mm, unless otherwise stated.

DN	∅ DF	LF	∅ BF	AF	∅ D	A x α	∅ MF
10	90	130	60	16	14	4 × 90°	13.6
15	95	130	65	16	14	4 × 90°	18.1
20	105	150	75	18	14	4 × 90°	23.7
25	115	160	85	18	14	4 × 90°	29.7
32	140	180	100	18	18	4 × 90°	38.4
40	150	200	110	18	18	4 × 90°	44.3
50	165	230	125	20	18	4 × 90°	56.3

(Table shows DIN EN 1092 PN 25 FTF 1 according to DIN EN 558-1)

Performance Specifications

Flow Characteristics

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

Operating Limits

WARNING

For device variants with approvals or conformities, deviating technical operating limits (temperature, pressure) may apply. Refer to the corresponding approval-related documentation.

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 shown in the temperature chart. The curves were 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). 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. The optional energy storage device SAFEPOS energy-pack is available for the device. If the supply voltage fails, it supplies the actuator with the energy required to move the valve into the desired position, which can be set in the menu.