Burkert Type 2100 pneumatically operated 2/2-way angle seat valve is specially optimized for decentralized process automation and fulfills the 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.

Features

• High flow rates
• Long service life
• Easy integration of automation units with ELEMENT
• Flow-optimized stainless steel valve body with sleeve, clamp, or weld connection
• Suitable for steam, water, neutral gases, alcohols, oils, fuels, hydraulic fluids, salt solutions, alkalis, and organic solvents

Product Design

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

Technical Data

Property	Value
Design	Angle seat valve
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
Control medium	Air, neutral gases
Degree of protection	IP65/67

Materials

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

Control Functions and Flow Direction

Flow Direction Below the Seat

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

• 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 (unpressurized).

Flow Direction Above the Seat

Only use flow direction above the seat for gases and vapors, 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.

Operating Limits

The ambient and medium temperature range may be limited by non-ex-relevant specifications. The operating range of Burkert process valves is also limited by the nominal pressure according to the relevant standard.

Optional Variants

• High-temperature variant: 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.
• Drinking water variant: Wetted materials are tested for suitability with drinking water up to +85 °C.
• Vacuum variant: Without leakage bore, 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 up to 25 bar(g) and +60 °C.

Approvals and Conformities

• Explosion protection: ATEX II 2G Ex h IIC T4…T2 Gb / II 2D Ex h IIIC T135 °C…T300 °C Db, IECEx.
• Drinking water: Suitable for use in drinking water applications (TrinkwasserV).
• Foods and beverages/Hygiene: FDA compliant, USP Class VI, EC Regulation 1935/2004, China food GB Standards.
• DNV GL classification: Accepted for installation on all vessels classed by DNV GL.
• Fuel gases: Complies with Regulation (EU) 2016/426 and DVGW DIN EN 161 / DIN EN 16678.
• TA Luft: Technical instruction on air quality control.