Burkert Type 3320 electromotive 2/2-way angle seat valve operates as an on/off valve for shut-off tasks under demanding operating conditions. The electromotive actuator features a ball screw that moves the swivel plate at speeds up to 6 mm/s, reacting almost instantaneously to process signals. The valve provides a safety position via an optional SAFEPOS energy-pack in the event of a power failure. The closed design and powder-coated aluminium actuator housing provide IP65/IP67 and NEMA 4X protection, ensuring resistance to impact and vibration. The valve utilizes a self-adjusting packing gland with exchangeable V-seals to maximize service life and tightness. The fieldbus-compatible Type 3320 supports EtherNet/IP, PROFINET, Modbus TCP, and EtherCAT for process monitoring and valve diagnostics.

General Technical Data

Actuator Sizes

• AG2: Actuator size 2 with a nominal force of 1300 or 2500 N for seat size 15...50.
• AG3: Actuator size 3 with a nominal force of 7700 or 10000 N for seat size 40...80.

Product Properties	Specification
Design	Angle seat on/off valve
Nominal diameter	DN 15...DN 80, NPS 1/2...3
Safety setting (power failure)	With SAFEPOS energy-pack: open, closed or freely programmable. Without: blocked in last position
Flow direction	Against closing direction (below seat)
Operating pressure	0...25 bar(g). Vacuum variant: -0.9 bar(g)
Nominal pressure	PN 25 (DIN EN 1333), Class 150 (DIN EN 1759)
Seat leakage	Leakage rate A (DIN EN 12266-1), seat seal PTFE and PEEK, test medium air
Kv value	5.0...140 m³/h
Closing time	AG2: 2.3...6.6 s. AG3: 8.7 s
Travel speed	6 mm/s (AG2 1300 N), 4 mm/s (AG2 2500 N), 3 mm/s (AG3 7700/10000 N)
Operating voltage	24 V DC ± 10 % (maximum residual ripple 10 %)
Operating current	AG2: max 3 A. AG3: max 5 A (including charging current of SAFEPOS)
Duty cycle	100 %
Fieldbus (digital)	Bürkert system bus (büS), CANopen, EtherNet/IP, PROFINET, Modbus TCP, EtherCAT
Operating medium	Steam, neutral gases, water, alcohols, oils, fuels, hydraulic fluids, salt solutions, lyes, organic solvents, oxygen (optional)
Medium temperature	-40...+ 230 °C
Ambient temperature	-25...+ 65 °C (without additional modules)
Degree of protection	IP65/IP67 (DIN EN 60529), NEMA 4X

Approvals and Conformities

• Explosion protection: ATEX (II 3G Ex ec IIC T4 Gc, II 3D Ex tc IIIC T135 °C Dc) and IECEx.
• North America: Actuators UL Listed for USA and Canada (UL 61010-1).
• Drinking water: Materials comply with UBA assessment principles (TrinkwasserV) up to +85 °C.
• Foods and beverages/Hygiene: FDA Code of Federal Regulations, USP, EC Regulation 1935/2004, China food GB Standards.
• Others: Suitability for oxygen (up to 25 bar(g) and +60 °C), TA Luft.

Materials

Actuator Materials

Component	AG2 Material	AG3 Material
Blind cover/gateway housing	PPS (standard), stainless steel 1.4301 (ATEX/IECEx)	PPS (standard), stainless steel 1.4301 (ATEX/IECEx)
Actuator cover	PPS	PC
Seal	EPDM	EPDM
Actuator housing	Powder-coated aluminium	Powder-coated aluminium
Actuator base	PPS	Stainless steel 1.4308

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	PEEK or stainless steel 1.4404 (316L)
4	Packing gland tube	Stainless steel 1.4401 (316)
5	Seal valve body	Graphite or PTFE
6	Swivel plate	Stainless steel 1.4401 (316) / 1.4404 (316L)
7	Valve seat seal	PTFE or PEEK sealing washer
8	Valve body	Stainless steel CF3M

Dimensions

Actuator Dimensions

AG2 Actuator

AG3 Actuator

Body Connections

Threaded Connection

Welded Connection

Clamp Connection

Performance Specifications

Fluidic Data (Flow Below Seat)

DN	NPS	Actuator force [N]	Max. operating pressure [bar(g)]	Kv value water [m³/h] (Welded ISO 4200)
15	1/2	1300	25	5.4
20	3/4	1300	11	11
25	1	1300	20	20
32	1 1/4	1300 / 2500	16 / 25	32
40	1 1/2	1300 / 2500 / 7700	10 / 18 / 25	47
50	2	1300 / 2500 / 7700	6 / 10 / 25	62
65	2 1/2	10000	25	91
80	3	10000	17	140

Operating Limits for Seat Seal

PTFE is used for a maximum medium temperature of +130 °C. If the maximum medium temperature temporarily or permanently exceeds +130 °C, PEEK is the appropriate seal material.

Product Design and Assembly

• Mechanical manual override: Located under the blind cover (AG2) or pressure compensation element (AG3). Ensures the actuator can be operated if the power supply fails.
• Electrical manual override: Carried out via two buttons under the blind cover.
• Display 360° LED light ring: Indicates device status, valve end position, and operating state.
• Mechanical position indicator: Shows the current valve position even if the supply voltage fails.
• SAFEPOS energy-pack (optional): Supplies the actuator with energy to move the valve into a safe position during a power failure. Fully charged after a maximum of 120 seconds.

Service and Maintenance

Risk of injury from high pressure

Before working on the system or device, switch off the pressure and vent or drain lines.

Risk of injury if the wrong tools are used

To remove the actuator from the valve body, use an open-end wrench, never a pipe wrench. To replace the packing gland, use a special installation wrench, modified socket wrench, or open-end wrench.

Removing the Actuator

When removing the actuator from the valve body, ensure that the valve is in the open position. The control valve can be manually opened electrically or mechanically. Do not exceed the maximum tightening torque of 2 Nm when using the mechanical manual control.

Changing the Swivel Plate Set

1. Support the swivel plate on the cylindrical part using a prism.
2. Knock out the dowel pin using a suitable pin punch (3 mm for spindle diameter 10 mm; 5 mm for spindle diameter 14 mm).
3. Remove the swivel plate.
4. Place the new swivel plate on the spindle, align the holes, and carefully knock in the dowel pin.

Installing the Actuator

Grease the external thread of the body connection (e.g., with Klüber paste UH1 96-402). Screw the actuator onto the valve body using an open-end wrench.

Connection size valve body DN [mm]	Tightening torques [Nm]
13, 15	45 ±3
20	50 ±3
25	60 ±3
32, 40	65 ±3
50	70 ±3
65	100 ±3

Running X.TUNE

After installing the actuator, run the X.TUNE function to adjust the position controller to the physical stroke of the actuating element. Never run the X.TUNE under medium pressure.