BURKERT 20127518 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. Its unique design allows easy integration of automation units in all expansion stages. 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, and high resistance to chemicals.

This specific model features a DN 15 weld end connection, a stainless steel body, a PEEK seat seal, and a PPS actuator. It operates with a flow direction below the seat and uses Control Function A (normally closed by spring force).

Key Properties

• High seal tightness due to self-adjusting packing glands (spindle seal element)
• High seat tightness due to swivel plate
• Actuator can be seamlessly rotated by 360°
• Maintenance-free under normal conditions
• Suitable for steam sterilization

General Technical Data

Property	Specification
Design	Globe valve
Nominal diameter	DN 15
Safety setting	Normally closed (control function A)
Flow direction	Against closing direction (below seat)
Operating pressure	0 bar(g) ... 25 bar(g)
Nominal pressure	PN 25 (DIN EN 1333)
Pilot pressure	5.2 bar(g) ... 10 bar(g)
Kv value (water)	4.7 m³/h
Medium temperature	-10 °C ... +185 °C
Ambient temperature	-10 °C ... +100 °C
Port connection	Weld end (ISO 4200 / DIN EN ISO 1127)
Degree of protection	IP65/67

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). Spring force (CFA) generates the closing force on the swivel plate. A spindle connected to the actuator piston transmits the force.

Flow Direction Below Seat

The valve is closed against the medium flow with spring force (control function A, CFA). As the medium is present under the swivel plate, the operating pressure contributes to the opening of the valve.

WARNING

Valve leak if there is too little minimum pilot pressure or high operating pressure! Failing to meet the permitted operating pressure can cause a leak in the valve seat. Do not exceed the operating pressure.

Materials

Element	Material
Actuator cover / casing	PPS
Piston seal	FKM
Spring	Stainless steel 1.4310
Spindle packing	PTFE V-Rings (filled), with spring compensation
Spindle	Stainless steel 1.4401 (316) / 1.4404 (316L)
Spindle guide	PEEK
Body seal	Graphite
Swivel plate	Stainless steel 1.4401 (316) / 1.4404 (316L)
Seat seal	PEEK
Valve body	Stainless steel 316L / CF3M

Dimensions

Body with Welded Connection

Nominal diameter	ES	LS	DIN EN ISO 1127 / ISO 4200 (∅ DS)	WS
DN 15	20 mm	90 mm	21.3 mm	1.6 mm

Installation Notes

DANGER

Risk of injury from high pressure in the system or device. Before working on the system or device, switch off the pressure and ventilate or empty the lines.

TIP

Turning the actuator The position of the ports can be seamlessly aligned by turning the actuator 360°. When turning the actuator, the valve must be in the open position to avoid damage to the seat seal or seat contour.

• The installation location must be easily accessible and provide sufficient clearance for installation, removal, and maintenance.
• Ensure that the pipes are aligned before connecting the valve.
• Observe the direction of flow as indicated on the type label.
• When welding the valve body into the pipeline, ensure any control unit is not installed to prevent heat damage.