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. 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.

General Technical Data

Product properties
Design	Globe valve
Nominal diameter	DN 10...DN 100, NPS 3/8...NPS 4
Safety setting	Normally closed (control function A), normally open (control function B)
Flow direction	Against closing direction (below seat), with closing direction (above seat)

Performance data
Operating pressure	0 bar(g)...25 bar(g), 40 bar(g) on request
Nominal pressure	PN 25/PN 40 (DIN EN 1333), Class 150 (DIN EN 1759)
Pilot pressure	2.5 bar(g)...10 bar(g)
Seat leakage	Leakage rate A (DIN EN 12266 - 1), seat seal PTFE and PEEK, test medium air

Medium data
Operating medium	Steam, water, neutral gases, alcohols, oils, fuels, hydraulic fluids, salt solutions, organic solvents, oxygen and fuel gases
Medium temperature	- 40 °C...+ 230 °C
Viscosity	Max. 600 mm²/s
Control medium	Air, neutral gases

Control Functions

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.

Control Function	Description
Control function A (CF A)	Pneumatically operated 2/2-way on/off valve. Flow direction below seat. Normally closed by spring force.
Control function B (CF B)	Pneumatically operated 2/2-way on/off valve. Flow direction below seat. Normally opened by spring force.
Control function A (CF A)	Pneumatically operated 2/2-way on/off valve. Flow direction above seat. Normally closed by spring force.

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).

Materials

No.	Element	Material
1	Ground terminal	Stainless steel 1.4301/1.4305 only for ATEX variant
2	Optical position indicator	Optical position indicator polysulfone PSU
3	Pilot air ports	Push-in connector PP (standard)
4	Actuator cover	PPS
5	Actuator casing	Stainless steel 1.4561 (316Ti)
6	Piston seal	FKM
7	Spring	Stainless steel 1.4310
8	Pipe	Stainless steel 1.4401 (316)/1.4404 (316L)
9	Spindle packing	PTFE V-Rings (filled), with spring compensation
10	Spindle	Stainless steel 1.4401 (316)/1.4404 (316L)
11	Spindle guide	DN 15...DN 65: PEEK. DN 80...DN 100: 1.4401 (316)/1.4404 (316L)
12	Body seal	Graphite, PTFE (option)
13	Swivel plate	Stainless steel 1.4401 (316)/1.4404 (316L)
14	Seat seal	PTFE, PEEK (option)
15	Valve seat with O-ring	Stainless steel 1.4571, EPDM
16	Valve body	Stainless steel 316L / CF3M

Dimensions

Actuator

DN	NPS	Actuator size ∅ [mm]	∅ A	H
15	1/2	50 (D)	64.5	236
15	1/2	70 (M)	91	250
20	3/4	50 (D)	64.5	242
25	1	50 (D)	64.5	245
32	1 1/4	90 (N)	120	340
40	1 1/2	90 (N)	120	345
50	2	90 (N)	120	351
50	2	130 (P)	159	403

Body with Flange Connection

NPS	∅ DF	LF	∅ BF	AF	∅ D	A x α	∅ MF
1/2	89	184	60.5	11.2	15.7	4 × 90°	15.7
3/4	99	184	69.9	12.7	15.7	4 × 90°	20.8
1	108	184	79.2	14.2	15.7	4 × 90°	26.7
1 1/2	127	222	98.6	17.5	15.7	4 × 90°	40.9
2	152	254	120.7	19.1	19.1	4 × 90°	52.6

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.

DANGER

Explosion hazard due to electrostatic charging in ATEX zones! If a statically charged device or person discharges suddenly, there is a risk of explosion in the potentially explosive area. Take appropriate measures to ensure that no electrostatic charge can build up in the potentially explosive area. Only wipe the surface of the device gently with a damp or anti-static cloth. Ground the actuator and the valve body.