Burkert 368499 Type 2100 is a pneumatically operated 2/2-way angle seat valve optimized for decentralized process automation. The device controls the flow of liquid or gaseous media, including water, alcohols, oils, fuels, hydraulic fluids, saline solutions, lyes, organic solvents, vapor, and neutral gases. Maximum service life and tightness are achieved by the self-adjusting V-seal packing gland. The highly integrated system features a compact design, integrated pilot air ducts, IP65/67 protection, and high resistance to chemicals.

• High flow rates
• Long service life
• Flow-optimized stainless steel valve body with weld connection
• Suitable for steam

Device Components

1. Transparent cap with position
2. Actuator cover
3. Actuator housing
4. Relief bore
5. Valve body
6. Flow direction marking
7. Port connection
8. Body connection
9. Actuator connection
10. Pilot air port 1
11. Pilot air port 2

Control Function

The 368499 model operates with Control function A (CF A). It is a pneumatically actuated 2/2-way on/off valve that is normally closed by spring force in the rest position.

Flow Direction Below the Seat

For liquid media, gases, and vapors, the flow direction must be below the seat. As the medium is present under the swivel plate, the operating pressure contributes to the opening of the valve.

WARNING

Leaking valve seat with flow direction below seat If the pilot pressure is too low or the operating pressure is too high, the valve seat may leak. Comply with the minimum control pressure (5 bar) and the maximum operating pressure (10 bar) values.

Materials

Element	Material
Actuator cover	PPS
Actuator casing	Stainless steel 1.4561 (316Ti)
Piston seal	FKM
Spring	Stainless steel 1.4310
Packing gland	PTFE V-Rings (filled), with spring compensation
Spindle	Stainless steel 1.4401 (316)/1.4404 (316L)
Spindle guide	PEEK
Body seal	Graphite
Swivel plate	Stainless steel 1.4401 (316)/1.4404 (316L)
Seat seal	PTFE
Valve body	Stainless steel CF3M

INFO

The lubricants for the packing gland and actuator are classified according to NSF H1.

Technical Data

The following fluidic and performance data applies specifically to the DN 50 configuration with Actuator size 90 (N) and PTFE seat seal.

Property	Value
Nominal diameter	DN 50
Actuator size ∅	90 (N)
Kv value (water)	55 m³/h
Pilot pressure min.	5.0 bar(g)
Operating pressure max.	10 bar(g)
Medium temperature	-10 °C to +185 °C
Ambient temperature	-10 °C to +100 °C
Nominal pressure	PN 25 (DIN EN 1333)

Dimensions

Actuator Dimensions

Nominal diameter	Actuator size ∅	∅ A [mm]	B [mm]	H [mm]	K/M [mm]
DN 50	90 (N)	120	262	261	236

Body with Welded Connection

Nominal diameter	Standard	ES [mm]	CS [mm]	LS [mm]	∅ DS [mm]	WS [mm]
DN 50	DIN EN ISO 1127 / ISO 4200 / DIN 11866 series B	26	50	175	60.3	2.0

Explosion Protection (ATEX/IECEx)

The device is suitable for use as category 2 equipment, non-electrical production equipment (structural safety) in zones 1/21 and 2/22.

Approvals:

• EPS 18 ATEX 2 008 X II 2G Ex h IIC T4…T2 Gb / II 2D Ex h IIIC T135 °C…T300 °C Db
• IECEx EPS 18.0007X Ex h IIC T4…T2 Gb / Ex h IIIC T135 °C…T300 °C Db

DANGER

Explosion hazard due to electrostatic charge! If statically charged devices or persons discharge suddenly, there is an explosion risk in the potentially explosive area.

• Take appropriate measures to ensure that electrostatic charges cannot build up in the potentially explosive area.
• Only clean the device surface by wiping it gently with a damp or anti-static cloth.
• Ground the actuator and the valve body.

Device Grounding

1. Ground the valve body: To establish potential equalization, ground the valve body to the piping system using a conductive connection.
2. Exposed metal parts that are not integrated into the valve potential equalization (PA) must be included in the PA by the customer via an additional PA connection.
3. Ground conductive device parts: Conductive parts must be grounded separately. Install a grounding strap clip or grounding terminal (if not pre-installed) as shown below and ground it via a grounding point.