BURKERT 20071023 (Type 3361) is an electromotive 2-way globe control valve engineered for continuous throttling duties in demanding industrial environments. The assembly integrates a high-precision AG2 linear electric actuator with a CF3M cast stainless steel globe valve body featuring G 1 1/4" internal threaded ports (DIN ISO 228-1) and a DN32 nominal orifice (seat diameter 32 mm). Powered by a 24 V DC brushless motor coupled to a ball screw drive, the unit generates a nominal driving force of 1300 N at a positioning speed of 6 mm/s. The equal percentage control cone delivers a theoretical rangeability of 50:1 with a full-stroke flow capacity of Kv 17.8 m³/h (Cv 20.8 gpm) across an operating pressure range of 0.00 to 16.00 bar(g).

Configured specifically under article number 20071023, the unit incorporates an integrated fieldbus gateway supporting Modbus TCP and büS via dual M12 D-coded Ethernet ports. Failsafe reliability is established by the internal SAFEPOS energy-pack, which drives the valve to the normally open (NO) position upon power failure. Local commissioning and operational monitoring are executed via an illuminated graphic display with four capacitive push buttons, complemented by an optical 360° multi-color LED status ring and a mechanical continuous position indicator.

Technical Specifications

Specification Parameter	Technical Value / Detail
Product Type	Type 3361 Electromotive 2-way globe control valve
Article Number (SKU)	20071023
Port Connection Size	G 1 1/4" internal thread (DIN ISO 228-1)
Valve Orifice / Seat Size	DN 32 (seat diameter 32 mm / 1 1/4")
Flow Capacity	Kv 17.8 m³/h (Cv 20.8 gpm)
Flow Characteristic	Equal percentage (theoretical rangeability 50:1)
Operating Pressure Range	0.00 to 16.00 bar(g)
Nominal Pressure Class	PN 25 (DIN EN 1333) / Class 150 (DIN EN 1759)
Medium Temperature Range	-10 °C to +185 °C
Ambient Temperature Range	-25 °C to +65 °C (subject to module derating)
Maximum Fluid Viscosity	Up to 600 mm²/s
Supply Voltage	24 V DC ±10% (max. residual ripple 10%)
Actuator Size & Driving Force	AG2 (1300 N nominal thrust)
Positioning Speed	6 mm/s
Typical Closing Time	4.4 s (4400 ms)
Dead Band	±0.1% of stroke
Power Consumption	Operating: max. 3 A (including 1 A SAFEPOS charging current); Standby: 2 to 5 W
Duty Cycle	100% continuous duty
Protection Class (Electrical)	III (DIN EN 61140)
Enclosure Rating	IP65 / IP67 (DIN EN 60529), NEMA 4X
Weight	Actuator AG2: ~5.5 kg (total valve weight ~8.0 kg)
Fail-Safe Mechanism	SAFEPOS energy-pack (delivery setting: Normally Open / NO)
Digital Communication	büS + Modbus TCP (integrated 2-port switch)
Wetted Body Material	Stainless steel CF3M
Seat Seal Material	Stainless steel (metallic sealing, DIN EN 60534-4 Class IV)
Regulatory Approvals	Food (EC) 1935/2004 declaration, Ecolab F&E/P3-E No. 40-1

Materials and Mechanical Construction

BURKERT 20071023 utilizes materials chosen for corrosion resistance, chemical cleanability, and mechanical endurance in industrial washdown environments. The exterior actuator enclosure meets IP65/IP67 and NEMA 4X ingress protection, qualified according to Ecolab detergent testing method F&E/P3-E No. 40-1.

Actuator Enclosure Materials (AG2)

Item	Actuator Component	Material Specification
1	Display housing / Blind cover / Gateway housing	PPS (Polyphenylene sulphide) standard
2	Actuator cover	PPS
3	Static seals	EPDM
4	Actuator housing	Cast aluminium, powder-coated
6	Housing flange seal	EPDM
7	Actuator base	PPS

Valve Body and Wetted Trim Materials

Item	Trim Component	Material Specification
1	Spindle (valve stem)	Stainless steel 1.4401 (316) / 1.4404 (316L)
2	Spindle seal (packing gland)	Filled PTFE V-rings with spring compensation
3	Spindle guide	Stainless steel 1.4404 (316L)
4	Packing gland tube	Stainless steel 1.4401 (316)
5	Valve body seal	Graphite (high-temperature rated)
6	Seat seal	Stainless steel 1.4571
7	Control cone	Stainless steel 1.4571
8	Valve seat (screwed-in)	Stainless steel 1.4571
9	O-ring valve seat	PTFE
10	Valve body	Cast stainless steel CF3M

Fluidic Performance and Flow Characteristics

Flow passes against the closing direction (flow below the seat, indicated by body markings 2 -> 1), preventing water hammer when closing against liquid media. Flow profiling follows an equal percentage curve according to DIN EN 60534-2-4 with a theoretical rangeability of 50:1.

Stroke Flow Progression (Seat Size 32 mm / DN32)

Under test conditions with ambient water (+20 °C) in accordance with DIN EN 60534-2-4, the valve achieves the following flow progression across stroke percentages:

Stroke (%)	5%	10%	20%	30%	40%	50%	60%	70%	80%	90%	100% (Kvs)
Kv (m³/h)	0.48	0.60	0.85	1.3	2.1	3.1	4.5	6.8	10.2	14.0	17.8

Seat Seal Leakage Classification

Seat Trim	Tight Sealing Required	DIN EN 60534-4 Leakage Class	Operating Medium Temperature	Application Note
Stainless steel (1.4571)	No	Class IV (0.01% of Kvs)	-40 °C to +230 °C	Standard metal-to-metal configuration on model 20071023; resistant to cavitation, wet steam erosion, and particles.
PTFE soft seal (optional)	Yes	Class VI (bubble-tight)	-40 °C to +130 °C	Soft seat insert for low-temperature shut-off; susceptible to abrasive erosion.
PEEK soft seal (optional)	Yes	Class VI (bubble-tight)	-10 °C to +230 °C	Engineered polymer insert for high-temperature tight shut-off duties.

Operating Limits and Temperature Derating

BURKERT 20071023 operates safely within defined pressure and temperature envelopes governed by the valve body rating (PN 25 / Class 150) and thermal dissipation from the AG2 actuator electronics.

Ambient vs. Medium Temperature Derating (AG2 Curve 3)

Because article 20071023 incorporates both the SAFEPOS energy-pack and the fieldbus gateway module, thermal derating curve 3 applies:

• At a medium temperature of +100 °C, the permissible ambient temperature reaches +65 °C.
• At a medium temperature of +150 °C, the permissible ambient temperature is reduced to +55 °C.
• At the maximum medium rating of +185 °C (for saturated steam duties), ambient temperature must remain below +50 °C.

Environmental and Thermal Precautions

Operating at high ambient temperatures combined with maximum continuous motor duty and steam media can trigger internal temperature alarms. Protect the actuator from direct solar radiation, weather exposure, and intense external thermal sources.

Actuator and Body Dimensions

Actuator Height Dimensions (AG2)

Nominal Port Diameter	Standard Version Height H1 [mm]	Fieldbus Gateway Version Height H2 [mm]
DN 10 (3/8")	417	489
DN 15 (1/2")	417	489
DN 20 (3/4")	423	495
DN 25 (1")	446	518
DN 32 (1 1/4") — Article 20071023	474	546
DN 40 (1 1/2")	479	551
DN 50 (2")	485	557

Note: Without tight sealing function, the actuator lifts by approximately 2 mm in the closed seat position.

Threaded Body Dimensions (G Thread to DIN ISO 228-1)

Nominal Diameter DN	Thread Size D	Thread Depth E [mm]	Face-to-Face LM [mm]	Wrench Flat AF [mm]
DN 10	G 3/8	12	65	27
DN 15	G 1/2	14	65	27
DN 20	G 3/4	16	75	34
DN 25	G 1	18	90	41
DN 32 — Article 20071023	G 1 1/4	20	110	50
DN 40	G 1 1/2	22	120	55
DN 50	G 2	24	150	70

Electrical Connections and Fieldbus Interface

Model 20071023 uses industrial M12 circular connectors located on the AG2 base and the fieldbus gateway housing:

• X1: M12 circular plug, 8-pin, A-coded (analogue/digital control signals)
• X3: M12 circular plug, 5-pin, A-coded (24 V DC supply and büS/CANopen)
• X7: Dual M12 circular sockets, 4-pin, D-coded (Modbus TCP fieldbus 2-port switch)

X1 Circular Connector Pinout (8-Pin A-Coded Plug)

Pin	Signal Assignment
1	Digital input +
2	GND for digital input and digital outputs
3	Digital output 2 + (PNP, max. 100 mA)
4	Digital output 1 + (PNP, max. 100 mA)
5	Analogue output -
6	Analogue output + (0/4 to 20 mA or 0 to 5/10 V)
7	Set-point value / Analogue input -
8	Set-point value / Analogue input + (0/4 to 20 mA, input resistance 70 Ω)

X3 Operating Voltage Connector Pinout (5-Pin A-Coded Plug)

Pin	Signal Assignment
1	CAN Shield / functional screening
2	Operating voltage 24 V DC ±10%
3	GND / CAN_GND
4	CAN_H (büS communication)
5	CAN_L (büS communication)

X7 Fieldbus Interface Pinout (4-Pin D-Coded Sockets)

Pin	Ethernet Line Assignment
1	Transmit Data + (TX+)
2	Receive Data + (RX+)
3	Transmit Data - (TX-)
4	Receive Data - (RX-)

Control Architecture and User Interface

Position regulation is performed by an internal microprocessor comparing the setpoint value (CMD) received from the Modbus TCP bus or analogue input against the actual linear position (POS) measured by an internal displacement sensor. Any control deviation (Xd1) triggers the motor control circuit to reposition the brushless linear drive until the deadband (±0.1%) is satisfied.

Local Display and Optical Feedback

• Display Module: Graphic screen with back key, menu key, and two navigation buttons for local status readouts, parameter configuration, and manual stroke control.
• 360° LED Light Ring: Integrated into the actuator head, emitting continuous, pulsing, or flashing light in multiple colors to signal operating state, limit positions, warnings, or diagnostic faults.
• Mechanical Position Indicator: Yellow optical indicator visible through the transparent actuator neck window, displaying the continuous physical position of the valve spindle even when power is disconnected.

SAFEPOS Energy-Pack Operation

The internal SAFEPOS energy-pack is a rechargeable capacitive module that supplies emergency drive power if the external 24 V DC supply fails. For model 20071023, the factory failsafe profile drives the spindle to the fully open (Normally Open / NO) position, preventing dead-heading in circulation loops. The unit achieves full charge within 120 seconds of power application and provides an operational design life of up to 10 years.

Manual Actuation Methods

1. Electrical Manual Actuation: Accessible through the display module interface in MANUAL mode using the upper (open) and lower (close) navigation keys.
2. Mechanical Manual Override: Used when the valve is unpowered. An Allen key (width across flats 3 mm) is inserted into the mechanical drive receptacle under the display/gateway housing.

Avoid Mechanical Override When Powered

Actuate the mechanical manual override only when the supply voltage is completely switched off. Turning the manual override while the electric drive is energized can cause irreversible mechanical damage to the gearbox and motor. Never exceed the maximum tightening torque of 2.0 Nm during manual actuation.

Commissioning, Service, and Maintenance

Running the X.TUNE Calibration Routine

The X.TUNE function automatically calibrates the integrated position controller to the physical stroke limits and seal compression of the installed valve body. X.TUNE must be performed upon initial site commissioning, after replacing the control cone, or after servicing the spindle packing gland.

Medium Pressure Restriction During X.TUNE

Never execute X.TUNE while the valve is under medium pressure. Dynamic hydraulic forces will distort the stroke calibration, leading to incorrect positioning and loss of tight seat shut-off.

• Via Display Module: Navigate to CONFIGURATION -> Position controller -> MAINTENANCE -> CALIBRATION -> X.TUNE. Select the valve seat material (Stainless steel), confirm the prompt, and execute.
• Via Local Push Buttons: With the dummy cover removed, press and hold the OPEN and CLOSE push buttons simultaneously for 5 seconds. The 360° LED ring illuminates solid orange during calibration and reverts to standard operating status upon completion.

Assembly Tightening Torques

Joint Location	Fastener / Component Size	Tightening Torque
Body Connection to Actuator	DN 32 Body connection hex	65 ± 3 Nm (48 ± 2 lbf ft)
Valve Seat Ring	DN 32 Screwed-in seat ring	65 + 5 Nm
Spindle Guide Bushing	Spindle ø14 mm (DN32)	60 Nm
Actuator Base Screws	4x Base connection screws	5 Nm
Actuator Cover Fasteners	4x Internal hexalobular T25 screws	5 Nm
Fieldbus Gateway Fastener	Socket head cap screw 3 mm hex	1.1 Nm
Bayonet Adapter Fasteners	2x Internal hexalobular T20 screws	1.1 Nm
SAFEPOS Locking Screw	1x Internal hexalobular T10 screw	1.1 Nm

Spare Parts for Type 3361 DN32

Spare Part Package	Part Description	Order Article No.
Control Cone Set DN32	Stainless steel cone, dowel pin, graphite seal	226953
Valve Seat Set DN32	Stainless steel seat ring, graphite seal	262174
Packing Gland Seal Set	PTFE chevron pack, graphite seal, lubricant (spindle ø14 mm, DN25-50)	285722
Spindle Guide	VA spindle guide DN32 (spindle ø14 mm)	246583
SAFEPOS energy-pack	Replacement energy storage module (AG2)	285834
Replacement Display Module	Plastic HMI display module with keys	277869
Holding Device	Mounting clamp fixture for DN25 to DN50 bodies	693771
Valve Seat Installation Tool	Dedicated tool insert for DN32 seat removal/installation	652607
Modified Socket Wrench	SW21 modified socket for packing gland guide (spindle ø14 mm)	683223
USB büS Interface Set 1	PC service adapter kit (Type 8923) for Bürkert Communicator	772426