Burkert Type 2100 is a pneumatically operated 2/2-way angle seat valve specially optimized for decentralized process automation. It fulfills 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 characterized by its compact and smooth design, integrated pilot air ducts, protection classes IP65/67, NEMA Type 4X, and high resistance to chemicals.

Key Features

• High flow rates
• Long service life
• Easy integration of automation units with ELEMENT
• Flow-optimized stainless steel valve body with sleeve, clamp, or weld connection
• Suitable for steam, water, neutral gases, alcohols, oils, fuels, hydraulic fluids, salt solutions, alkalis, and organic solvents

Control Functions and Flow Direction

Water Hammer Risk

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

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 Seat

Only use flow direction above the seat for gases and vapours, and for 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 and supports the sealing of the valve seat.

Control Functions

Symbol	Description
Control function A (CF A)	Pneumatically operated 2/2-way on/off valve. Normally closed by spring force.
Control function B (CF B)	Pneumatically operated 2/2-way on/off valve. Normally opened by spring force.
Control function I (CF I)	Pneumatically actuated on/off valve on both sides, 2/2-way. Rest position not defined (unpressurised).

Material Specifications

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)
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

Note

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

Dimensions

Actuator Dimensions

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
40	1 1/2	90 (N)	120	246	245	220
50	2	130 (P)	159	312	312	273
65	2 1/2	130 (P)	159	324	324	285
80	3	130 (P)	159	344	344	305

(Note: The dimensions for B, H, K and M are maximum dimensions and may be up to 6 mm less, depending on the connection orifice size and standard.)

Operating Limits

Ambient and Medium Temperature

Optional Variants

• High-temperature variant: Suitable for applications with steam, neutral gases and other heat transfer mediums up to +230 °C.
• Water variant: For applications with water up to +200 °C, a special configuration of the packing gland increases service life significantly.
• Drinking water variant: Wetted materials are tested for suitability with drinking water up to +85 °C.
• Vacuum variant: Without leakage bore, suitable for pressures down to -0.9 bar(g).
• Low-temperature variant: Suitable for minimum medium temperatures down to -40 °C.
• Variant for oxygen: Non-metallic wetted materials are tested for suitability with oxygen up to 25 bar(g) and +60 °C.

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 EPS 18.0007X.
• Foods and beverages/Hygiene: FDA, USP, EC Regulation 1935/2004, China food GB Standards.
• Drinking water: Suitable for use in drinking water applications (TrinkwasserV).
• Others: DNV GL classification, Oxygen suitability, Fuel gases (CE), TA Luft.