Burkert solenoid valve 6281EV A 13.0 NBR G1/2 24VDC 00221844 00221845

This valve utilizes a servo-assisted structure that combines a pilot isolation diaphragm with plunger actuation. The pilot valve features a rotary armature or rocker solenoid design and includes an isolation diaphragm, ensuring that the medium does not pass through the pilot orifice. This design significantly enhances anti-clogging performance.

For opening, a minimum differential pressure of 0.2 bar is necessary to actuate the main diaphragm. The pilot valve then regulates the pressure within the main chamber to facilitate valve opening. When closing, the valve employs a damped mechanism to ensure a quiet and smooth closure, preventing water hammer effects which helps reduce impacts on the pipeline and minimizes noise pollution.

In terms of energy efficiency, an optional KD dual-coil technology is available. This technology automatically lowers power consumption during steady-state operation after the initial actuation, making it highly suitable for applications requiring continuous long-term operation.

The valve body is available in brass or stainless steel, offering wide compatibility with various materials. Sealing options include NBR, EPDM, and FKM, allowing use in water, gases, general chemicals, and environments involving high temperatures.

The device boasts high reliability and durability, featuring a centrally threaded coil with vibration resistance and epoxy resin encapsulation to withstand chemical exposure. Additionally, the pilot isolation diaphragm design effectively minimizes risk of clogging and leakage.

Flexibility in customization is another key benefit. Options such as a manual override for commissioning and maintenance, KD energy-saving coils, and explosion-proof certifications make the valve adaptable for use in harsh or hazardous conditions.

Compliance with multiple regulatory standards is ensured, including drinking water quality standards, ATEX explosion-proof certification, UL and CSA approvals. This compliance makes the valve suitable for applications across different regions with strict regulatory demands.

This valve is commonly applied in municipal and industrial water treatment systems, as well as drinking water supply networks. Standard brass models are designed to meet relevant regulatory standards for such uses.

In the food and beverage industry, as well as pharmaceutical liquid preparation systems, stainless steel bodies paired with EPDM or FKM seals ensure hygiene and chemical compatibility.

For transferring compressed air, hydraulic oil, and general chemicals, material selection can be adjusted based on the properties of the medium being handled.

Specialized versions of the valve certified by ATEX or IECEx are available for fluid control in hazardous environments.

When selecting this valve, it is crucial to ensure that the actual working differential pressure is at least 0.2 bar; otherwise, the valve might not open reliably.

To match medium compatibility, choose stainless steel bodies with FKM seals for highly corrosive fluids, while standard brass bodies with EPDM seals are recommended for drinking water applications.

For optimizing working conditions, opting for the KD dual-coil variant is advisable in continuous operation scenarios to reduce energy consumption. In hazardous areas, always specify explosion-proof certified models.

Installation practices include placing a strainer upstream to prevent impurities from entering the valve. It is also important to avoid causing pipe stress on the valve body by supporting the pipeline independently. The manual override function should only be used during commissioning or emergencies and should not be engaged for extended forced opening.