What is the Burkert 20063357 Type 2106 valve used for?

The Burkert 20063357 is a pneumatically operated 3/2-way seat valve designed for decentralized automation, mixing, or distributing mediums. It handles fluids such as steam, water, neutral gases, alcohols, oils, and hydraulic fluids. The valve features a flow-optimized body and a self-adjusting gland for reliable, long-term tightness.

What are the operating temperature and pressure limits for the Burkert Type 2106 seat valve?

This valve supports a medium temperature range of -10 °C to +185 °C and a nominal body pressure of PN 16. The maximum pilot pressure is 10 bar(g), which reduces to 7 bar(g) for the 130 mm actuator size. The maximum allowable fluid viscosity is 600 mm²/s.

What materials are used in the construction of the Burkert 20063357 valve?

The valve body is constructed from cast stainless steel 316L with a PTFE seal. The actuator casing is made of PPS, the actuator cover is stainless steel 1.4561 (316Ti), and the spindle packing uses a PTFE seal with spring compensation.

What type of port connection and control function does the 20063357 model feature?

The Burkert 20063357 model features a 1-inch internal thread RC (ISO 7/1) port connection and a DN25 nominal diameter. It operates with Control Function A, meaning port connection 1 is normally closed (NC) with a spring when de-energised.

What industry approvals and certifications does the Burkert Type 2106 hold?

The valve complies with the Pressure Equipment Directive 2014/68/EU and Machinery Directive 2006/42/EC. It also holds ATEX and IECEx explosion protection certifications, FDA and EC 1935/2004 hygiene approvals, and DNV GL classification for marine vessels.

Which control heads and accessories are compatible with the Type 2106 seat valve?

The Type 2106 can be combined with Type 8691 or 8695 control heads, and Type 8690 or 8697 pneumatic control units. Integrating these accessories forms the On/Off ELEMENT Type 8801-GE valve system, providing features like contactless position detection and optical position indicators.

BURKERT 20063357 Type 2106 Pneumatically Operated 3/2-Way Seat Valve

Burkert Type 2106 (Article No. 20063357) is a pneumatically operated 3/2-way seat valve ELEMENT designed for decentralized automation. It consists of a pneumatically operated ELEMENT actuator and a 3-way stainless steel valve body. Interchanging of pressure and service ports enables different fluidic circuit functions, such as the mixing or distributing of mediums. The flow-optimized valve body of Type 2106 allows excellent flow rates. The tried and tested self-adjusting gland secures a high level of tightness and thus ensures reliable operation over years.

The design of the 3/2-way valve offers all the advantages of modern, decentralized automation: The directly connected control head and actuator provide a compact and smooth design, integrated pneumatic lines, protection class IP65/67, NEMA Type 4X, and high chemical resistance. For the user, the compact Type 2106 is often an economical alternative to two single valves.

General Technical Data

Property	Value
Body Material	Cast stainless steel 316L
Actuator Material	PPS
Seal Material	PTFE
Cover Material	Stainless steel 1.4561 (316Ti)
Spindle Packing	PTFE seal with spring compensation
Nominal Diameter	DN 15...DN 50, NPS 1/2...NPS 2
Nominal Pressure	PN 16 (body)
Pilot Pressure	Max. 10 bar(g), actuator size Ø 130 mm, 7 bar(g)
Medium	Steam, water, neutral gases, alcohols, oils, fuels, hydraulic fluids, salt solutions, alkalis, organic solvents, oxygen and fuel gases
Medium Temperature	-10 °C...+185 °C
Viscosity	Max. 600 mm²/s
Control Medium	Air, neutral gases
Ambient Temperature	-10 °C...+60 °C (integrated control unit) -10 °C...+100 °C (push-in air ports)
Installation Position	As required, preferably with actuator in upright position

Control Functions

Symbol	Description
	Control function C (CF C) Pneumatically operated 3/2-way process valve. When de-energised, pressure port 1 closed, service port 2 exhausted.
	Control function D (CF D) Pneumatically operated 3/2-way process valve. When de-energised, pressure port 3 connected to service port 2, exhaust port 1 closed.
	Control function E (CF E) Pneumatically operated 3/2-way mixer valve. When de-energised, pressure port 3 connected to service port 2, pressure port 1 closed.
	Control function F (CF F) Pneumatically operated 3/2-way distributor valve. When de-energised, pressure port 2 connected to service port 3, service port 1 closed.

Note on Control Function A

For Actuator with Control function A: When de-energised port connection 1 is closed with spring.

Pin Assignment for Fluidic Circuit Functions C, D, E and F

Fluidic circuit function	Connection 1	Connection 2	Connection 3
C	P	A	R
D	R	A	P
E	P1	A	P2
F	A	P	B

(A, B = Service ports; P, P1, P2 = Pressure ports; R = Exhaust port)

Approvals and Conformities

Conformity: Pressure Equipment Directive 2014/68/EU, Machinery Directive 2006/42/EC.
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: Ex h IIC T4…T2 Gb / Ex h IIIC T135 °C…T300 °C Db
Drinking Water: Suitable for use in drinking water applications (UBA). PF39: Suitable for products with medium temperature up to 85 °C (hot water).
Foods and Beverages/Hygiene: FDA (Code of Federal Regulations), 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, DVGW DIN EN 161, and DIN EN 16678.

Materials

BURKERT 20063357 Burkert Type 2106 materials and components cross-section

No.	Element	Material
1	Transparent cap	Polysulfone PSU
2	Pilot air ports	Push-in connector PP (standard) / Thread G 1/8" stainless steel 1.4305 (on request)
3	Actuator cover	PPS
4	Actuator casing	Stainless steel 1.4561 (316Ti)
5	Piston seal	FKM
6	Spring	Stainless steel 1.4310
7	Tube	Stainless steel 1.4401 (316)/1.4404 (316L)
8	Packing gland	PTFE
9	Spindle	Stainless steel 1.4401 (316)/1.4404 (316L)
10	Spindle guide	PEEK
11	Valve body	Stainless steel 1.4404 (316L)
12	Body closer	Stainless steel 1.4404 (316L)
13	Seal	PTFE
14	Seat nipple	Stainless steel 1.4404 (316L)

INFO

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

Dimensions

BURKERT 20063357 Burkert Type 2106 dimensions drawing

Performance Specifications

Pilot Pressure Diagrams

Actuator size Ø 50 mm (Maximum control pressure 10 bar(g)) BURKERT 20063357 Burkert Type 2106 pilot pressure diagram for 50 mm actuator

Actuator size Ø 70 mm (Maximum control pressure 10 bar(g)) BURKERT 20063357 Burkert Type 2106 pilot pressure diagram for 70 mm actuator

Product Accessories

The seat valve Type 2106 can be combined with the position feedback Type 8690/8697 and the control head Type 8691/8695 to form the valve system On/Off ELEMENT Type 8801-GE.

Type 8691 / 8695 Control Heads: Optimised for integrated mounting. Valve position is detected without contact via an analogue sensor element. Features teach function, coloured high-performance LEDs, and wear-free inductive position sensor.
Type 8690 / 8697 Pneumatic Control Units: Mechanical or inductive limit switches detect the valve position. Features optical position indicator and compact design.

Explosion Protection / ATEX Guidelines

When using the device in potentially explosive areas (Zones 1/21 and 2/22), special conditions apply for devices marked with PX51.

Explosion Hazard due to Electrostatic Charging!

If statically charged equipment or persons discharge suddenly, there is a risk of explosion in the potentially explosive area.

Take appropriate measures to ensure that no electrostatic charge can build up.
Only wipe the device surfaces gently with a damp or anti-static cloth.
Ground the actuator and valve body.
If using a plastic valve body, ground the actuator separately.

Temperature Classes

Temperature Class	T2	T3	T4
Max. Surface Temperature	300 °C	200 °C	135 °C
Ambient Temperature	-40 to 130 °C	-40 to 130 °C	-40 to 100 °C
Max. Medium Temperature	285 °C	185 °C	125 °C

Equipment Grounding

Ground the valve body: Use a conductive connection to ground the valve body to the piping system to establish equipotential bonding.
Exposed metal parts: Any exposed metal parts not integrated into the valve's equipotential bonding (PA) must be incorporated into the PA by the customer via an additional connection.
Ground conductive parts: Conductive parts must be grounded separately. Install a grounding strap clip or grounding terminal as shown below and ground via a grounding point.

BURKERT 20063357 Burkert Type 2106 grounding strap clip and terminal

Cleaning in Potentially Explosive Areas

Cleaning agents can cause an explosion risk. Only use cleaning agents certified for use in explosive environments.