Burkert Type 2100 is a pneumatically operated 2/2-way angle seat valve optimized for decentralized process automation. The design allows the integration of automation units in all expansion stages, from electrical/optical position feedback to pneumatic control and integrated fieldbus interfaces. The self-adjusting V-seal packing gland ensures high tightness and extends the service life of the valve. The integrated system of valve and automation unit features a compact design, integrated pilot air ducts, IP65/67 and NEMA Type 4X protection classes, and high resistance to chemicals.

Technical Data

Property	Value
Nominal diameter	DN 10...DN 80, NPS 3/8...NPS 3
Operating pressure	0 bar(g)...25 bar(g), vacuum variants down to -0.9 bar(g)
Nominal pressure	PN 25 (DIN EN 1333), Class 150 (DIN EN 1759)
Pilot pressure	2.5 bar(g)...10 bar(g)
Medium temperature	-40 °C...+230 °C
Ambient temperature	-10 °C...+100 °C
Viscosity	Max. 600 mm²/s
Operating medium	Steam, water, neutral gases, alcohols, oils, fuels, hydraulic fluids, salt solutions, alkalis, organic solvents, oxygen, and fuel gases
Control medium	Air, neutral gases

Control Functions

The closing force is transferred by a spindle connected to the actuator piston. The valve supports multiple control functions depending on the application requirements:

• Control function A (CFA): Pneumatically operated 2/2-way on/off valve. Normally closed by spring force.
• Control function B (CFB): Pneumatically operated 2/2-way on/off valve. Normally opened by spring force.
• Control function I (CFI): Pneumatically operated 2/2-way on/off valve on both sides. Rest position not defined (unpressurised).

Flow Direction Below the Seat

Only use flow direction below the seat for liquid media, gases, and vapours. As the medium is present under the swivel plate, the operating pressure contributes to the opening of the valve.

Flow Direction Above the Seat

Only use flow direction above the seat for gases and vapours, and for valves with control function A (closed by spring force in rest position). As the medium is present above the swivel plate, the operating pressure contributes to the closing of the valve and supports the sealing of the valve seat.

WARNING

Risk of damage due to bursting pipes and bursting equipment when the flow is above the seat. In the case of liquid mediums, water hammer can occur, causing pipes and the device to burst. Do not use valves with flow above the seat for liquid mediums.

Materials

No.	Element	Material
1	Ground terminal	Stainless steel 1.4301/1.4305 (only for ATEX variant)
2	Optical position indicator	Polysulfone PSU
3	Pilot air ports	Push-in connector PP (Standard)
4	Actuator cover	PPS
5	Actuator casing	Stainless steel 1.4561 (316Ti)
6	Piston seal	FKM
7	Spring	Stainless steel 1.4310
8	Pipe	Stainless steel 1.4401 (316)/1.4404 (316L)
9	Packing gland	PTFE V-Rings (filled), with spring compensation
10	Spindle	Stainless steel 1.4401 (316)/1.4404 (316L)
11	Spindle guide	PEEK
12	Body seal	Graphite, PTFE (Option)
13	Swivel plate	Stainless steel 1.4401 (316)/1.4404 (316L)
14	Seat seal	PTFE, PEEK (Option)
15	Valve body	Stainless steel CF3M

Approvals and Conformities

• Explosion Protection: 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.
• Drinking Water: The materials comply with the assessment principles (UBA) for materials in contact with drinking water (TrinkwasserV).
• Foods and Beverages/Hygiene: FDA Code of Federal Regulations compliant, USP biocompatible, and EC Regulation 1935/2004 compliant.
• Others: DNV GL classification for ships, suitability for oxygen, and fuel gases (Regulation EU 2016/426).

ATEX Installation Note

For use in potentially explosive atmospheres, the valve body and actuator must be properly grounded to prevent electrostatic charging hazards. Conductive parts must be grounded separately if a plastic valve body is used.

Product Accessories

The Type 2100 angle seat valve can be combined with position feedback units (Type 8690/8697) and control heads (Type 8691/8695) to form the valve system on/off ELEMENT Type 8801-YE. These units provide optical position indication, mechanical or inductive proximity switches, and fieldbus interfaces (AS-Interface, IO-Link, büS).