Solenoid Valves
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burkert Product Overview

Solenoid valves – Switching to make things move Bürkert stands for quality and competence in the sector of fluid technology. Our products are used wherever fluids and gases need to be measured, controlled and regulated. Bürkert has been developing and producing solenoid valves for more than 70 years. In doing so we use recognised technical principles and unique technologies with a common goal: to fulfil your requirements. We customise our valves to fit your applications and therefore offer you the optimal solution for your needs. That is why Bürkert valves can be Fascination Bürkert From...

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Fascination Bürkert Welcome to the Fascinating World of Fluid Control Systems Measurement and control: When it comes to working with liquids and gases, we are at your side – as a manufacturer of sophisticated products, as a problem-solver with an eye for the big picture, and as a partner offering you reliable advice. Bürkert Product Program We are one of the few suppliers on the market to cover the complete control loop. Our current product range extends from solenoid valves through process and analytical valves to pneumatic actuators and sensors. Since we started in 1946, we have developed...

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Bürkert | Solenoid Valves Solenoid valves from a single source Guaranteed quality Range of manufacture with know-how We offer you a complete performance spectrum. Everything from choosing the right product to consulting, engineering, Comprehensive inspections and tests ensure the quality of our products. To fulfil your requirements we conduct numerous tests prior to starting serial production. International standards and directives are checked separately. Our UL lab, for ex- Take advantage of our competence in production and development. Our qualified engineers work continuously on the...

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Burkert | Solenoid Valves Sectors / industries Certifications and certificates Burkert solenoid valves can be found in many different sectors. Several examples are listed here. Your sector is most likely included. If not, our competent sales representatives will be glad to assist you. Different certifications and certificates are available depending on the applications and the regional utilisation of the valves. The following table gives an overview of the available certifications and certificates.

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Burkert | Solenoid Valves Simple servo-assisted valve p required “Pilot valve media separated” (p. 46) Process actuation (see Product Overview 03)

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Circuit symbols Body Connections WW We build a vast array of valves for a dispersed and diverse global process control market. Regional and industry based requirements are taken care of by our internal modular simplicity. No matter where you are in the world and which industry norm you are trying to meet, we have your connection. Hose fitting * Specific flange Burkert

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Bürkert | Solenoid Valves Typical pressure profile for opening and closing processes Opening and closing of a valve always has a temporary dynamic effect on the pressure conditions within a control system. The level of the change in pressure amplitude depends to a large degree on these physical parameters: static system pressure, hydrostatic pressure, pipe diameter, temperature, mass of the medium and the opening and closing response of the valve. While much is known about the physical facts, the opening and closing response of a valve is a variable that can hardly be calculated. However,...

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Bürkert | Solenoid Valves Coil technology Single magnetic coils Solenoids have been in use for decades as simple, reliable and cost-effective valve actuators. Their function is to move the armatures or plungers in the valves without contact. Corresponding to the existing mains voltages, they are designed as DC or AC coils. Coils are also available with a frequency of 50 Hz and 60 Hz. The latter are used in solutions for the An enamelled copper wire wound on a coil form is the sim- North American market. plest of all coil types. Bürkert coils are always coated with an insulating mass to...

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Bürkert | Solenoid Valves Double coil (e. g. Type 131) This coil makes use of two independent windings with To generate a higher magnetic force than with single coils, high and low power, based on the principle of the single the TwinPower coil features two parallel windings on the magnetic coil. Electronics integrated in the moulding mass coil yoke. After a short starting phase integrated elec- switch after a short starting moment from the winding tronics (see also double coil) switch the coils from parallel with high power to the winding with low power. to series connection, reducing the...

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Bürkert | Solenoid Valves Direct-acting Valve Anatomy Coil The coil forms the drive system of the solenoid valve. The coil is cast in polyamide or epoxy to protect it against Electrical energy is converted to a controlled magnetic force. Direct Acting Valve Anatomy damage and moisture. The coil temperature and ambient influences determine the material used for encapsulation. Plunger The plunger is a precision turned part made of magnetic steel. It is moved by the magnetic field generated in the coil. Diameter The diameter refers to the inner diameter of the valve seat. It is relevant for...

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Bürkert | Solenoid Valves Direct-acting 2-way plunger valve Function: Electrical connection The main components of this valve type are a coil, a closing spring, a valve body cover and the valve body with the seat. Without current the path to the outlet is blocked (normally closed), since the closing spring, supported by the pressure of the medium, presses the plunger onto the valve Solenoid coil seat. If current flows through the coil, the latter generates a starting force, which pulls the plunger and the seal against the spring force and draws the medium upward. The channel is opened for...

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Burkert | Solenoid Valves Function: The functioning principle of the direct-acting 3-way plunger valve depends on how the fittings are connected to the fluid system. As opposed to the 2-way plunger valve it has two valve seats and one return flow. If no electric voltage is present, a normally closed 3/2-way valve allows no passage from the pressure connection P to connection A (outlet), since a conical spring presses the plunger onto valve seat 1. At the same time A is directly connected to R (return flow) and valve seat 2 is opened. If the coil is energised the plunger is pulled in and...

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