Burkert Type 2100 pneumatically operated 2/2-way angle seat valve ELEMENT is specially optimised for decentralized process automation and fulfils the tough criteria in process environments. 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

• High flow rates
• Long service life
• Easy integration of automation units with ELEMENT
• Flow-optimised stainless steel valve body with sleeve, clamp or weld connection
• Suitable for steam

General Technical Data

Product properties
Design	Angle seat valve
Nominal diameter (port connection)	DN 10...DN 80, NPS 3/8...NPS 3
Safety setting in case of power failure	Normally closed (control function A), normally open (control function B)
Flow direction	Flow to open (below seat), flow to close (above seat)
Operating pressure	0 bar(g)...25 bar(g), vacuum variants...- 0.9 bar(g) (option)
Nominal pressure	PN 25 (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
Operating medium	Steam, water, neutral gases, alcohols, oils, fuels, hydraulic fluids, salt solutions, alkalis, organic solvents, oxygen and fuel gases
Medium temperature	- 40 °C...+ 230 °C
Viscosity	Max. 600 mm²/s
Control medium	Air, neutral gases
Ambient temperature	- 10 °C...+ 100 °C
Degree of protection	IP65/67
Installation position	As required, preferably with actuator in upright position

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.

Flow direction below seat for liquids, steam and gases

• 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.

Flow direction above seat for steam and gases

• Control function A (CF A): Pneumatically operated 2/2-way on/off valve. Flow direction above seat. Normally closed by spring force.

Approvals and Conformities

• Explosion protection: EPS 18 ATEX 2 008 X 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. The materials comply with the assessment principles (UBA).
• Foods and beverages/Hygiene: FDA (Code of Federal Regulations), USP (United States Pharmacopeial Convention), EC Regulation 1935/2004, China food GB Standards.
• DNV GL classification: Accepted for installation on all vessels classed by DNV GL.
• Oxygen: Optional suitability for gaseous oxygen.
• Fuel gases: Complies with Regulation (EU) 2016/426 and DVGW DIN EN 161.

Materials

No.	Element	Material
1	Ground terminal	Stainless steel 1.4301/1.4305 only for ATEX variant
2	Optical position indicator	Polysulfone PSU
3	Pilot air ports	Push-in connector PP (Standard). On request: Thread G 1/8" Stainless steel 1.4305
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	Packing gland	PTFE V-Rings (filled), with spring compensation
10	Spindle	Stainless steel 1.4401 (316)/1.4404 (316L)
11	Spindle guide	PEEK
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 body	Stainless steel CF3M

INFO

The lubricants for packing gland and actuator are classified according to NSF H1.

Dimensions

Actuator

Nominal diameter DN	NPS	Actuator size ∅	∅ A [mm]	B [mm]	H [mm]	K/M [mm]
15	1/2	50 (D)	64.5	166	163	147
15	1/2	70 (M)	91	182	178	156
20	3/4	50 (D)	64.5	174	171	155
20	3/4	70 (M)	91	189	186	163
25	1	50 (D)	64.5	175	173	156
25	1	70 (M)	91	191	188	165
25	1	90 (N)	120	229	228	203
32	1 1/4	70 (M)	91	201	197	174
32	1 1/4	90 (N)	120	243	242	217
40	1 1/2	70 (M)	91	204	201	178
40	1 1/2	90 (N)	120	246	245	220
50	2	70 (M)	91	223	219	196
50	2	90 (N)	120	262	261	236
50	2	130 (P)	159	312	312	273

Body with threaded connection

DN	NPS	G	NPT	RC	CM	LM	AF
15	1/2	14	13.7	13.2	24	65	27
20	3/4	16	14.0	14.5	27	75	34
25	1	18	16.8	16.8	29.5	90	41
32	1 1/4	16	17.3	19.1	36	110	50
40	1 1/2	18	17.3	19.1	35	120	55
50	2	24	17.6	23.4	45	150	70

Principle of Operation

Flow direction below the seat

Only use flow direction below the seat for liquid media, gases, and vapours. As the medium is present under the swivel plate, the operating pressure contributes to the opening of the valve.

Flow direction above the seat

Only use flow direction above the seat for gases and vapours, and valves with control function A (closed by spring force in rest position). As the medium is present above the swivel plate, the operating pressure contributes to the closing of the valve. The operating pressure also supports the sealing of the valve seat.

Safety Instructions

DANGER

Medium under pressure Medium under pressure can seriously injure people. In the event of overpressure or pressure surges, the device or lines can burst. Pneumatic lines that are defective or not securely fastened can come loose and swing around.

• Before working on the device or system, switch off the pressure. Vent or empty the lines.
• Adhere to the permitted pressure ranges of the medium.

WARNING

Contaminated pilot air The control exhaust air of the device can be contaminated with lubricants and damage the health of people and the environment. Dissipate control exhaust air appropriately.

TIP

Installation position Any installation position is permitted, but preferably with the actuator facing up. Ensure correct position and integrity of the seal in the body connection. Grease the thread of the body connection before installation.