The Burkert Type 2101 pneumatically operated 2/2-way globe valve is specially optimised for decentralised process automation and meets all practical requirements even under difficult operating conditions. The specific model 465605 features a stainless steel body with a DN50 ANSI B16.5 Class 150 flange connection, a PTFE seat seal, and operates with Control Function A (normally closed). It is designed to handle operating pressures from 0 to 10 bar and medium temperatures ranging from -10 °C to 185 °C, offering a Kv value of 45 m³/h. Its unique design allows easy integration of automation units in all expansion stages, from electrical/optical position feedback to pneumatic control and integrated fieldbus interfaces.

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 characterised by its compact and smooth design, integrated pilot air ducts, protection classes IP65/67, NEMA Type 4X, and high resistance to chemicals. The actuator is constructed from polyphenylene sulphide (PPS), ensuring durability in demanding environments.

Key Features

• Compact Design: Highly integrated system of valve and automation unit.
• Long Service Life: Self-adjusting V-seal packing gland ensures maximum service life and tightness.
• Easy Integration: Seamless integration of automation units with the ELEMENT system.
• Robust Construction: Stainless steel valve body (316L/CF3M) with flange, sleeve, or welded connections.
• Versatile Media Compatibility: Suitable for steam, water, neutral gases, alcohols, oils, fuels, hydraulic fluids, salt solutions, and organic solvents.

Structure and Function

The globe valve consists of a pneumatically actuated piston actuator and a 2-way body. The actuator is made from polyphenylene sulphide (PPS) or stainless steel (for actuator size 225).

Control Functions

• 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): Actuating function via reciprocal pressurisation (double acting).

Flow Direction Below Seat

Depending on the variant, the valve is closed against the medium flow either with spring force (CFA) or pilot pressure (CFB or CFI). As the medium is present under the swivel plate, the operating pressure contributes to the opening of the valve.

Flow Direction Above Seat

The valve is closed with the medium flow via spring force (CFA). Because the operating pressure is above the swivel plate, it helps the valve close and also contributes to sealing the valve seat. The valve opens via pilot pressure.

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.

Technical Data

General Specifications

Property	Value
Design	Globe valve
Safety setting	Normally closed (CFA), normally open (CFB)
Nominal pressure	PN 25/PN 40 (DIN EN 1333), Class 150 (DIN EN 1759)
Seat leakage	Leakage rate A (DIN EN 12266-1), seat seal PTFE and PEEK, test medium air
Viscosity	Max. 600 mm²/s
Control medium	Air, neutral gases
Ambient temperature	-10 °C to +100 °C
Degree of protection	IP65/67

Materials

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

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 EPS 18.0007X.
• Drinking Water: Suitable for use in drinking water applications (TrinkwasserV).
• Foods and Beverages/Hygiene: FDA compliant, USP biocompatible, EC Regulation 1935/2004 compliant, China food GB Standards compliant.
• DNV GL Classification: Accepted for installation on all vessels classed by DNV GL.
• Oxygen & Fuel Gases: Optional suitability for gaseous oxygen and fuel gases (Regulation EU 2016/426).
• Hydrogen: Optional suitability for gaseous hydrogen.

Operating Limits

In addition to the maximum operating pressures, the operating range of Bürkert process valves is limited by the nominal pressure according to the relevant standard.

ATEX Grounding Note

When operating in potentially explosive areas, ensure proper grounding of the valve body and actuator to prevent electrostatic charging hazards. Conductive parts must be grounded individually.