Bürkert 20137624 (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, which 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.

This specific model (20137624) features a 1/2" G internal thread connection, operates on a 24 V DC supply, and handles pressures from 0 to 25 bar. It is equipped with a PEEK seat seal, making it highly resilient for temperatures ranging from -10 °C to 185 °C. The flow-optimized valve body ensures precise adaptation to process requirements, and the closed design with a robust surface meets hygienic requirements for fast and residue-free cleaning.

General Technical Data

Product properties	Details
Design	Globe control valve
Nominal diameter	DN 10...DN 100, NPS 3/8...4 (Model 20137624 is 1/2")
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
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	IP65/IP67 (DIN EN 60529), NEMA 4X

Approvals and Conformities

• Explosion protection (Optional): As a category 3 device suitable for zone 2/22 (ATEX/IECEx).
• North America (USA/Canada): Optional actuators UL Listed according to UL 61010-1 and CAN/CSA-C22.2 No. 61010-1.
• Drinking water: Optional suitability for use in drinking water applications (TrinkwasserV) up to +85 °C.
• Foods and beverages/Hygiene: Wetted materials compliant with FDA, USP, EC Regulation 1935/2004, and China food GB Standards.
• Oxygen/Hydrogen: Optional suitability for gaseous oxygen and hydrogen applications.

Materials

Component	Material
Actuator housing	Powder-coated aluminium
Display housing/blind cover	PPS (standard), stainless steel 1.4301 (for ATEX/IECEx)
Spindle	Stainless steel 1.4401 (316)/1.4404 (316L)
Spindle seal	PTFE V-seals (filled) with spring compensation
Seat seal	Stainless steel 1.4571 (optionally hardened), PTFE or PEEK seal washer
Valve body	Stainless steel CF3M

Dimensions

Actuator AG2

Nominal diameter	NPS	H1 Standard variant (mm)	H2 Fieldbus variant (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	474	546
DN 40	1 1/2	479	551
DN 50	2	485	557

(Dimensions without sealing function: the actuator is raised by approx. 2 mm in the closed position.)

Performance Specifications

Flow Characteristics

• Equal-percentage flow characteristic according to DIN EN 60534-2-4 (linear characteristic curve on request).
• Theoretical rangeability: Up to 50:1 depending on 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:

Tight sealing required	Leakage class	Medium temperature	Seat seal
No	III/IV (metal seals)	-40 °C...+230 °C	Stainless steel
Yes	VI (soft seals)	-40 °C...+130 °C	PTFE
Yes	VI (soft seals)	-10 °C...+230 °C	PEEK

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).

Maintenance and Service

DANGER!

Risk of injury from high pressure. Before working on the system or device, switch off the pressure and vent or drain lines.

TIP

Spare parts may be replaced only by trained technicians and with the appropriate tools. Always set the operating state to MANUAL and move the valve into the open position before removing the actuator from the valve body.

Replacing the Control Cone:

1. Set operating state to MANUAL and move valve into open position.
2. Switch off the supply voltage.
3. Remove actuator from valve body.
4. Knock out dowel pin using a suitable pin punch and remove the control cone.
5. Attach new control cone to the spindle, align bores, and carefully knock in the new dowel pin.

Replacing the Valve Seat:

1. Remove actuator from valve body.
2. Select a suitable tool insert and screw it into the installation tool.
3. Unscrew the valve seat using the installation tool and a wrench.
4. Clean the thread and sealing surface in the valve body using compressed air.
5. Grease the new valve seat thread with an approved lubricant (e.g., Klüberpaste UH1 96-402) and screw it in using a torque wrench.