BURKERT Type 3361 is an innovative electromotive 2-way globe control valve designed as the solution for 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. 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 a closed design and robust surface, ensuring 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.

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

Property	Value
Design	Globe control valve
Nominal diameter	DN 10...DN 100, NPS 3/8...4
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), 40 bar(g) on request. Vacuum variant down to -0.9 bar(g)
Nominal pressure	PN 25/PN 40 (DIN EN 1333), Class 150 (DIN EN 1759)
Kvs value	0.1...140 m³/h
Seat leakage	Class III, IV and VI (DIN EN 60534-4)
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 %)
Protection class	IP65/IP67 (DIN EN 60529), NEMA 4X
Medium temperature	-40 °C to +230 °C
Ambient temperature	-25 °C to +65 °C (without additional modules)

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 UL Listed for USA and Canada (UL 61010-1).
• Drinking Water: Optional suitability for drinking water applications up to +85 °C.
• Foods and Beverages: FDA, USP, EC Regulation 1935/2004, and China food GB Standards compliant variants available.
• Others: Optional variants suitable for Oxygen and Hydrogen.

Materials

Actuator AG2 Components:

1. Display housing/blind cover: 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 Components:

• 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

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

DN	NPS	H1 Standard variant (mm)	H2 Fieldbus variant (mm)
10	3/8	417	489
15	1/2	417	489
20	3/4	423	495
25	1	446	518
32	1 1/4	474	546
40	1 1/2	479	551
50	2	485	557

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

Temperature and Pressure Limits

The maximum permissible temperature for the environment and the medium are dependent on each other. The application range is also limited by the nominal pressure in accordance with the relevant standard (e.g., PN25, PN40, Class 150).

Seat Seal Limits:

• Stainless steel (Class III/IV): -40 °C to +230 °C. Metallic seals are impervious even under demanding process conditions.
• PTFE (Class VI): -40 °C to +130 °C.
• PEEK (Class VI): -10 °C to +230 °C (recommended for > +130 °C).

Product Design and Assembly

The intelligent process valve Type 3361 offers the operator options for process monitoring, valve diagnosis, and preventive maintenance. Internal measurements of the operating state are evaluated and issued as a warning or error message if necessary. 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).