BURKERT 20073328 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. 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.

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
• Unrivalled service life and tightness guaranteed by the proven self-adjusting packing gland with exchangeable V-seals

General Technical Data

Product properties	Description
Design	Globe control valve
Nominal diameter	DN 10...DN 100, NPS 3/8...4 (SKU 20073328 is DN 25)
Flow direction	Against closing direction (below seat)
Controller variant	Positioner or process controller (option)
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)
Dead band of the position control	± 0.1 %
Operating voltage	24 V DC ± 10 % (maximum residual ripple 10 %)
Protection class (DIN EN 61140)	III
Duty cycle	100 %
Operating medium	Steam, neutral gases, water, alcohols, oils, fuels, hydraulic fluids, salt solutions, organic solvents
Medium temperature	-40 °C...+230 °C
Viscosity	Up to 600 mm²/s
Degree of protection	IP65/IP67 (DIN EN 60529), NEMA 4X
Installation position	Any, preferably with actuator upright

Materials

Component	Material
Spindle	Stainless steel 1.4401 (316)/1.4404 (316L)
Spindle seal	PTFE V-seals (filled) with spring compensation
Spindle guide	Stainless steel 1.4404 (316L)
Packing gland tube	Stainless steel 1.4401 (316)
Seal valve body	Graphite or PTFE
Seat seal	Stainless steel 1.4571 (optionally hardened), PTFE or PEEK seal washer
Control cone	Stainless steel 1.4571 (optionally hardened)
Valve seat	Stainless steel 1.4571 (optionally hardened)
O-ring valve seat	EPDM or PTFE
Valve body	Stainless steel CF3M

Dimensions

Body with flange connection (DIN EN 1092 PN 25 FTF 1 according to DIN EN 558-1)

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
65	185	290	145	22	18	8 × 45°	66.0
80	200	310	160	24	18	8 × 45°	81.0
100	235	350	190	24	22	8 × 45°	100.0

Note

Dimensions in mm, unless otherwise stated. The specific SKU 20073328 corresponds to the DN 25 flange connection.

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

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 to +230 °C. Metallic seals are impervious even under demanding process conditions.
• Soft seals (Class VI): PTFE (-40 °C to +130 °C), PEEK (-10 °C to +230 °C). By using plastics as sealing material, the control valves can close tightly. Their use is not recommended in cases of increased erosion due to demanding process conditions.