Burkert Type 2100 pneumatically operated 2/2-way angle seat valve ELEMENT is specially optimized for decentralized process automation and fulfills tough criteria in process environments. Its unique design allows easy integration of automation units in all expansion stages, from electrical/optical position feedback to pneumatic control and integrated fieldbus interface. Maximum service life and tightness are achieved by the proven self-adjusting v-seal packing gland. The highly integrated system of valve and automation unit is characterized by its compact and smooth design, integrated pilot air ducts, protection classes IP65/67, NEMA Type 4X, and high resistance to chemicals.

General Technical Data

Product Properties	Description
Design	Angle seat valve
Nominal diameter	DN 10...DN 80, NPS 3/8...NPS 3
Safety setting	Normally closed (control function A), normally open (control function B)
Flow direction	Flow to open (below seat), flow to close (above seat)
Operating pressure	0 bar(g)...25 bar(g), vacuum variants...-0.9 bar(g) (option)
Nominal pressure	PN 25 (DIN EN 1333), Class 150 (DIN EN 1759)
Pilot pressure	2.5 bar(g)...10 bar(g)
Operating medium	Steam, water, neutral gases, alcohols, oils, fuels, hydraulic fluids, salt solutions, alkalis, organic solvents, oxygen and fuel gases
Medium temperature	-40 °C...+230 °C
Ambient temperature	-10 °C...+100 °C
Degree of protection	IP65/67

Product Overview

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 Functions and Flow Direction

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. The operating pressure also supports the sealing of the valve seat.

WARNING

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

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, PTFE (Option)
Swivel plate	Stainless steel 1.4401 (316)/1.4404 (316L)
Seat seal	PTFE, PEEK (Option)
Valve body	Stainless steel CF3M

Operating Limits for Optional Variants

• High-temperature variant: Thanks to an adaption of the packing gland, this variant is suitable for applications with steam, neutral gases and other heat transfer mediums up to +230 °C.
• Water variant: For applications with water up to +200 °C, a special configuration of the packing gland increases service life significantly. It is recommended for water temperatures starting at +85 °C.
• Drinking water variant: Wetted materials are tested in contact with the medium for suitability with drinking water up to +85 °C.
• Vacuum variant: Without leakage bore, this design is suitable for pressures down to -0.9 bar(g).
• Low-temperature variant: Suitable for minimum medium temperatures down to -40 °C.
• Variant for oxygen: Non-metallic wetted materials are tested for suitability with oxygen and are suitable for operating pressures up to 25 bar(g) and medium temperatures up to +60 °C.

DANGER

Explosion Hazard in ATEX/IECEx Zones If the device has an ATEX/IECEx approval (e.g., Ex h IIC T4...T2 Gb), ensure proper grounding of the valve body and actuator to prevent electrostatic discharge. Do not use magnetic coils in areas with strong charge-generating processes. Only use cleaning agents certified for explosive environments.