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 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. Unrivalled service life and tightness is guaranteed by the proven self-adjusting packing gland with exchangeable V-seals. The fieldbus-compatible Type 3361 provides many helpful functions for process monitoring, valve diagnostics and predictive maintenance and thus offers the decisive advantage of a modern process automation.

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
• Hydrogen variant available

General Technical Data

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

Product properties
Design	Globe control valve
Nominal diameter	DN 10...DN 100, NPS 3/8...4
Safety setting in case of power failure	With energy storage SAFEPOS energy-pack: open, closed or freely programmable position. Without energy storage: blocked in last position
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. Vacuum variant...- 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)
Closing time	AG2: 3.3...6.6 s, AG3: 8.7...12.0 s (Depending on travel speed, stroke and operating conditions)
Theoretical rangeability	Up to 50:1
Travel speed	6 mm/s (for AG2 1300 N), 4 mm/s (for AG2 2500 N), 3 mm/s (for AG3 7700 N and 10000 N)
Operating voltage	24 V DC ± 10 % (maximum residual ripple 10 %)
Operating medium	Steam, neutral gases, water, alcohols, oils, fuels, hydraulic fluids, salt solutions, organic solvents, oxygen (optional), hydrogen (optional), lyes (optional)
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

Approvals and Conformities

• Explosion protection: Optional ATEX/IECEx (Zone 2/22, Ex ec IIC T4 Gc / Ex tc IIIC T135 °C Dc)
• North America: Optional Actuators UL Listed for the USA and Canada (UL 61010-1)
• Drinking water: Optional suitability for drinking water applications (up to +85 °C)
• Foods and beverages/Hygiene: FDA, USP, EC Regulation 1935/2004, China food GB Standards
• Others: Oxygen suitability, Hydrogen suitability, TA Luft

Materials

Actuator AG2 Materials:

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
5. Seal: EPDM
6. Actuator base: PPS

Valve Body Materials:

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

Actuator AG2

Actuator AG3

Body with Flange Connection

Nominal diameter (port connection)	DIN EN 1092 PN 25 FTF 1 according to DIN EN 558 - 1							JIS 10K FTF 10 according to DIN EN 558 - 2
DN	∅ DF	LF	∅ BF	AF	∅ D	A x α	∅ MF	∅ 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	95	108	70	12	15	4 × 90°	18.1
20	105	150	75	18	14	4 × 90°	23.7	100	117	75	14	15	4 × 90°	23.7
25	115	160	85	18	14	4 × 90°	29.7	125	127	90	14	19	4 × 90°	29.7
32	140	180	100	18	18	4 × 90°	38.4	135	140	100	16	19	4 × 90°	38.4
40	150	200	110	18	18	4 × 90°	44.3	140	165	105	16	19	4 × 90°	44.3
50	165	230	125	20	18	4 × 90°	56.3	155	203	120	16	19	4 × 90°	56.3
65	185	290	145	22	18	8 × 45°	66.0	175	216	140	18	19	4 × 90°	71.5
80	200	310	160	24	18	8 × 45°	81.0	185	241	150	18	19	8 × 45°	84.3
100	235	350	190	24	22	8 × 45°	100.0	210	292	175	18	19	8 × 45°	109.1

Performance Specifications

Flow Characteristics

Equal-percentage flow characteristic according to DIN EN 60534-2-4 (linear characteristic curve on request).

Operating Limits

Operating limits for medium temperature and operating pressure: 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 ambient and medium temperature: 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.

AG2:

AG3:

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.

Service and Maintenance

Safety Instructions

• Risk of injury from high pressure: Before working on the system or device, switch off the pressure and vent or drain lines.
• Danger of burns: Following an extended duty cycle or as a result of a hot medium, the surface of the device may become hot. Only touch the device when wearing protective gloves.
• Risk of crushing: Perform installation and maintenance work only in the isolated state. Devices with SAFEPOS energy-pack: Completely drain SAFEPOS energy-pack. Wait until LED illuminated ring goes out.

Replacement part sets are available for Type 3361, including:

• Control cone set: Control cone, dowel pin, graphite seal and lubricant.
• Valve seat set: Valve seat and graphite seal (with O-ring from seat size 25).
• Seal set for the packing gland: Individual parts of the packing gland, graphite seal and lubricant.
• Spindle guide for the packing gland: Spindle guide, graphite seal and lubricant.
• SAFEPOS energy-pack: Optional energy pack for safety positions during power failure.