Burkert 20024508 (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, 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 characterised by its compact and smooth design, integrated pilot air ducts, protection classes IP65/67, NEMA Type 4X and high resistance to chemicals.

Features

• Compact design
• Long service life
• Easy integration of automation units with ELEMENT
• Stainless steel valve body with flange connection
• Suitable for steam

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).

Control Function B (CFB)

The 20024508 model features Control Function B (CFB), which is a pneumatically operated 2/2-way on/off valve, normally opened by spring force.

Flow Direction Below Seat

Depending on the variant, the valve is closed against the medium flow either with spring force or pilot pressure. 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! Minimum pilot pressure for CFB that is too low, or failing to meet the permitted operating pressure, can cause a leak in the valve seat.

• Adhere to minimum pilot pressure.
• Do not exceed the operating pressure.

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
Valve body	Stainless steel 316L / CF3M

Dimensions

Body with Flange Connection

DN	∅ DF	LF	∅ BF	AF	∅ D	A x α	∅ MF
10	90	130	60	16	14	4 × 90°	13.6
15	95	130	65	16	14	4 × 90°	18.1
20	105	150	75	18	14	4 × 90°	23.7
25	115	160	85	18	14	4 × 90°	29.7
32	140	180	100	18	18	4 × 90°	38.4
40	150	200	110	18	18	4 × 90°	44.3
50	165	230	125	20	18	4 × 90°	56.3
65	185	290	145	22	18	8 × 45°	66.0
80	200	310	160	24	18	8 × 45°	81.0
100	235	350	190	24	22	8 × 45°	100.0

(Table shows DIN EN 1092 PN 25 FTF 1 according to DIN EN 558-1)

Safety Instructions

DANGER

Risk of injury due to high pressure in the system or device.

• Before working on the system or device, switch off the pressure and ventilate or empty the lines.

WARNING

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.