BURKERT Type 2301 is a pneumatically operated 2-way globe control valve designed to fulfill tough criteria for process environments. Unrivalled cycle life and sealing integrity are guaranteed by the proven self-adjusting spindle packing with exchangeable V-seals. The fully integrated system has a compact and smooth design, integrated pneumatic lines, IP65/67 protection class, and superior chemical resistance.

Each globe valve body can be fitted with up to five sizes of trim sets. These parabolic trims provide a reliable and repeatable characteristic to vary the flow. The control cones are available in either stainless steel or with a durable PTFE seal or PEEK seal for tight shut-off, achieving leakage class III, IV, or VI. The design enables the easy integration of automation modules, whether they are digital electropneumatic positioners or process controllers.

Key Features

• Excellent control characteristics with a theoretical rangeability of 50:1
• High cycle life and maintenance-free operation
• Flow-optimised body in stainless steel
• Several Kv values per port size due to removable valve seats
• Control units can be mounted directly without external tubing

Control Functions

The valve seat is always closed against the medium flow. Spring force (CF A) or pneumatic pilot pressure (CF B and CF I) generate the closing force on the control cone. Because the medium pressure is below the control cone, it helps open the valve.

Symbol	Description
CF A	Pneumatically operated 2/2-way control valve. Flow direction below seat. Normally closed by spring force.
CF B	Pneumatically operated 2/2-way control valve. Flow direction below seat. Normally opened by spring force.
CF I	Actuating function via reciprocal pressurisation.

General Technical Data

Property	Value
Design	Globe control valve
Nominal diameter	DN 10...DN 100, NPS 3/8...NPS 4
Flow direction	Flow to open (below seat)
Operating pressure	0...25 bar(g), 40 bar(g) on request
Nominal pressure	PN 25/PN 40 (DIN EN 1333), Class 150 (DIN EN 1759)
Seat leakage	Leakage class III and IV for stainless steel; Class VI for PTFE and PEEK
Operating characteristic	Equal percentage, linear (others on request)
Medium temperature	-40 °C...+230 °C
Ambient temperature	-10 °C...+80 °C (depending on control unit)

Materials (ELEMENT Variant)

No.	Element	Material
1	Pilot air ports	Push-in connector PP
2	Actuator cover	PPS
3	Actuator casing	Stainless steel 1.4561 (316Ti)
4	Piston seal	FKM
7	Packing gland	PTFE V-Rings (filled), with spring compensation
8	Spindle	Stainless steel 1.4401 (316)/1.4404 (316L)
11	Control cone	Stainless steel 1.4571 (optionally hardened)
13	Seat seal	Stainless steel 1.4571, PTFE or PEEK
15	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 Ex h IIC T4…T2 Gb.
• Drinking Water: Suitable for use in drinking water applications (UBA).
• Foods and Beverages/Hygiene: FDA, USP, EC Regulation 1935/2004, China food GB Standards.
• Others: DNV GL classification, Oxygen suitability, Fuel gases (CE), Hydrogen suitability, TA Luft.

Safety Instructions

• Risk of injury when opening the actuator! The actuator contains a spring under tension. When the actuator is opened, the spring will jump out and may cause injuries. Do not open the actuator.
• Valve leak risk: Minimum pilot pressure for CF B and CF I that is too low, or failing to meet the permitted medium pressure, can cause a leak in the valve seat. Adhere to minimum pilot pressure and do not exceed the medium pressure.