The Burkert 333187 (Type 2100) is a pneumatically operated 2/2-way angle seat valve specially optimised for decentralized process automation. It fulfils the tough criteria in process environments, offering a unique design that allows easy integration of automation units in all expansion stages, from electrical/optical position feedback to pneumatic control and integrated fieldbus interfaces. 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, high resistance to chemicals, and IP65/67 / NEMA Type 4X protection classes.

Key Features

• High flow rates
• Long service life
• Easy integration of automation units with ELEMENT
• Flow-optimised stainless steel valve body with clamp connection
• Suitable for steam, water, neutral gases, alcohols, oils, and more

Product Overview

Component	Description
1	Transparent cap with position
2	Actuator cover
3	Actuator housing
4	Relief bore
5	Valve body
6	Flow direction marking
7	Port connection
8	Body connection
9	Actuator connection
10	Pilot air port 1
11	Pilot air port 2

Technical Data

Property	Value
Design	Angle seat valve
Nominal diameter	DN 65 (2 1/2 inch)
Safety setting	Normally closed (Control function A)
Flow direction	Flow to open (below seat), flow to close (above seat)
Operating pressure	-0.9 bar(g) to 5 bar(g)
Nominal pressure	PN 25 (DIN EN 1333), Class 150 (DIN EN 1759)
Pilot pressure	5 bar(g) to 10 bar(g)
Kv value (water)	85 m³/h
Medium temperature	-10 °C to +185 °C
Ambient temperature	-10 °C to +100 °C
Port connection	Clamp (ASME BPE)
Degree of protection	IP65/67

Materials

No.	Element	Material
1	Ground terminal	Stainless steel 1.4301/1.4305 (ATEX variant only)
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
15	Valve body	Stainless steel CF3M

Note

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

Principle of Operation & Flow Direction

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. 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.

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.

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.
• Foods and Beverages/Hygiene: FDA (Code of Federal Regulations), USP (United States Pharmacopeial Convention), EC Regulation 1935/2004.
• Drinking Water: Suitable for use in drinking water applications (TrinkwasserV).

DANGER

Explosion hazard due to electrostatic discharge! If statically charged devices or persons discharge suddenly, there is an explosion hazard in the potentially explosive area.

• Take appropriate measures to ensure that no electrostatic charges can build up in the potentially explosive area.
• Only clean the device surface by wiping it gently with a damp or antistatic cloth.
• Earth the actuator and the valve body.