Bürkert

Two-port valves opened and closed directly by the magnetic field of the coil.

Use it whenuse it when the line is small, the fluid is clean and neutral, and you simply need it open or shut. Direct acting means it works with no minimum pressure drop, which matters on gravity or low-pressure lines where a servo-assisted valve will not lift.

Three-port valves that add functions such as venting or redirecting the media.

Use it whenuse it when you need to exhaust or divert, not just isolate -- venting a pressurised leg or switching a line between two destinations.

Valves with a diaphragm that separates the medium from the solenoid actuator.

Use it whenuse it when the fluid is aggressive, contaminated or must stay clean -- the actuator never sees the media, so you are only choosing a diaphragm and body material, not a whole valve in exotic metal. This is the usual answer for chemical dosing and analysis lines.

Solenoid valves approved for use in areas at risk of explosion; Burkert lists ATEX, IECEx, UL HazLoc, FM HazLoc and China CCC approvals.

Use it whenuse it when the area classification requires it -- and check which scheme the site is audited to, because an ATEX-marked valve is not automatically accepted on a UL HazLoc job. This is one of the few cases where the approval decides the valve before anything else.

Separate ranges for steam and hot water, and for higher system pressures in energy and process engineering.

Use it whenuse it when a general purpose valve is out of its depth on temperature or pressure. Steam duty is a materials and seal problem, not a sizing problem, so do not try to stretch a water valve into it.

Solenoid valves developed for hydrogen systems and cryogenic applications.

Use it whenuse it when the service is liquefied gas or hydrogen -- Burkert calls this out as its own range, which is a sign the seat and body design differ, not just the material spec.

Pneumatically actuated globe-pattern valves with an angled seat, made in on-off and control versions.

Use it whenuse it when you want a robust actuated valve for steam, hot water or utility service and a full control valve is more than the job needs. The angled seat gives good flow for the body size, and the same valve family covers you if the duty later becomes modulating.

Valves that seal by pressing a diaphragm onto a weir or straight bore, in on-off and control versions.

Use it whenuse it when the fluid is corrosive, abrasive or must not contact metal -- the diaphragm is the only wetted moving part, so you rebuild rather than replace.

Globe-pattern control valves paired with Burkert positioners and process controllers.

Use it whenuse it when a loop has to hold a setpoint rather than just open and close. Buying the valve and the positioner from the same platform saves you the commissioning fight over signal ranges and feedback.

Quarter-turn and disc valve ranges offered with pneumatic or electromotive actuation, in shut-off and control versions.

Use it whenuse it when line size makes a globe or diaphragm valve impractical, or when you need low pressure drop when fully open.

Valves driven by an electric motorised actuator rather than compressed air.

Use it whenuse it when there is no plant air at the valve, or when you want the valve to hold its last position on air loss. The trade is slower stroke than a pneumatic actuator.

Burkert's common actuator and control-head platform across the process valve range; includes a 3-position actuator.

Use it whenuse it when you are standardising a plant -- one actuator platform across angle seat, globe, diaphragm and quarter-turn bodies means one set of spares and one wiring pattern. The 3-position version is worth knowing about when a process needs a defined mid-travel state, not just open and closed.

Stainless steel diaphragm valves built for high purity, sterile and CIP-cleanable service.

Use it whenuse it when the process is food, beverage, pharmaceutical or biotech and the valve has to drain and clean fully. Diaphragm material is the real decision -- match it to the product and to the CIP and SIP chemistry, not just to the pressure.

A patented two-weir design in which one diaphragm covers two valve weirs, giving multiway valve blocks with what Burkert describes as zero dead space and minimum internal volume.

Use it whenuse it when you are trying to shrink a skid or eliminate dead legs -- Robolux replaces a cluster of individual valves and the tubing between them, which is where hold-up volume and cleaning failures come from. It is the reason to look at Burkert on a sterile skid rather than a conventional valve line.

Hygienic valves configured to sit in a tee or at the base of a vessel with no pocket below the seat.

Use it whenuse it when a tank has to drain completely -- a standard valve mounted below a nozzle leaves product sitting in the nozzle. Tank bottom valves remove that pocket.

Valves in which a metal bellows isolates the stem from the process.

Use it whenuse it when a diaphragm will not take the temperature or the number of cycles but you still cannot allow stem leakage to atmosphere.

Valves that close by pinching a flexible sleeve.

Use it whenuse it when the fluid carries solids or fibres, or when single-use and product-contact concerns rule out a metal seat.

Hygienic-design valves rated for elevated pressure.

Use it whenuse it when a homogeniser, high-pressure dosing loop or hydrogen application needs both cleanability and pressure -- most hygienic valves give you one or the other.

Flow measurement using surface acoustic wave technology, with nothing inside the tube.

Use it whenuse it when the pipe must stay clear and cleanable -- there is no obstruction, no rotating part and no electrode in the flow path, so it suits hygienic and high-purity lines where a paddle wheel or turbine would be a contamination and maintenance problem.

Flow measurement based on the electromagnetic principle.

Use it whenuse it when the fluid is electrically conductive and you want a robust, unobstructed measurement -- water, dosing chemicals and most aqueous process streams. It will not read on oils or deionised water, which is the usual reason to move to FLOWave or Coriolis.

Paddle wheel, oval gear, ultrasonic, thermal mass, Coriolis and differential pressure flow devices, plus rotameters and flow switches.

Use it whenuse it when cost or fluid type rules out a magmeter -- oval gear for viscous fluids, paddle wheel for cheap water flow indication, Coriolis when you need true mass and medium-independent accuracy. A flow switch is the right answer when all you need to know is whether something is moving.

Radar, guided radar, ultrasonic, tuning fork and float level devices.

Use it whenuse it when you need tank level or a high or low alarm. Continuous radar or ultrasonic for inventory; a tuning fork or float when it is a point alarm and a continuous transmitter is overkill.

pH and ORP, conductivity, chlorine, turbidity, iron, SAC254 and nitrate measurement, including multichannel systems, plus the armatures that hold the sensors.

Use it whenuse it when the process is about water quality rather than flow -- treatment plants, rinse water, cooling loops and effluent monitoring. Buy the armature with the sensor; how you insert and retract the probe determines whether anyone will actually calibrate it.

Pressure and temperature devices plus the controllers and transmitters that close the loop.

Use it whenuse it when you want the measurement and the control action on one platform -- a Burkert controller driving a Burkert valve removes the integration work between a third-party transmitter, a PLC and a positioner.

Devices that measure gas flow and actively regulate it to a set-point; Burkert lists air, nitrogen, oxygen and specialised process gases.

Use it whenuse it when a process needs a known gas flow held steady regardless of upstream pressure -- a rotameter and a needle valve will drift as supply pressure moves.

Measurement-only gas flow devices without active regulation.

Use it whenuse it when you only need to know the flow, not set it -- for instance verifying consumption or feeding a total into the control system. Cheaper than a controller, so do not buy a controller by default.

Controllers and meters for dosing liquids such as water, methanol or hydrogen peroxide.

Use it whenuse it when a liquid additive has to be dosed at a rate rather than a volume. Burkert offers thermal measurement for cost-effective control and Coriolis where accuracy has to be medium-independent -- that choice is the main cost driver.

Devices that hold a system or tank pressure constant, designed to work alongside the flow controllers.

Use it whenuse it when the real variable you care about is pressure at the point of use, and controlling flow alone leaves it wandering.

Valves with electromagnetic or electromotive actuation that modulate in proportion to a signal, offered in customised configurations.

Use it whenuse it when you need continuous small-scale control and a full control valve with a positioner is oversized -- and when the application is repeat OEM volume, since Burkert customises this range.

Modular pneumatic manifolds that group the pilot valves for many process valves into one assembly.

Use it whenuse it when a skid has a dozen or more actuated valves -- one island with one air feed and one bus cable replaces a dozen individual pilots and their tubing runs, and it moves the pilots out of the wet area.

3/2, 4/2, 5/2 and 5/3 way pneumatic valves.

Use it whenuse it when you are piloting cylinders or actuators -- 5/2 for a standard double-acting actuator, 5/3 when it must be able to stop and hold mid-stroke.

Pre-built cabinets assembled with the components for a given application.

Use it whenuse it when you would rather buy the panel finished than have a contractor build it on site -- worth pricing on repeat skid designs.

Single and double acting cylinders, plus fittings, push-in connectors, silencers and maintenance parts.

Use it whenuse it when you need the motion as well as the valve, or when you are stocking the consumables -- silencers and fittings are what actually goes missing on a skid rebuild.

Automation interfaces including Profinet, EtherNet/IP and IO-Link.

Use it whenuse it when the customer specifies a fieldbus -- confirm the protocol before quoting, because it decides the control head and island variant and is not a field change.