This is a Burkert semi-direct operating 2/2 way solenoid valve with G 1/4 inch threads and a 24 V AC/DC coil. The valve has a brass housing with EPDM sealing and an orifice size of 6 mm. The circuit function of the solenoid valve is normally closed, which means the valve opens when voltage is applied. The semi-direct operating valve opens without needing differential pressure and requires only a slight pressure differential for full opening. Suitable for a pressure of 0 – 16 bar (232 psi) and a maximum temperature of 120 °C (248 °F). The valve has a Kv-value of 0.6 m3/h, this translates to a flow rate of 10 l/min at a differential pressure of 1 bar (for water). In imperial units: Cv = 1, which means 1 GPM @ 1 psi pressure drop. For many applications it is enough to select a valve based on the thread size and orifice diameter. For more accurate sizing, use the Kv-value with our easy to use valve sizing calculator. The brass housing is durable, suitable for neutral fluids and resistant to many chemicals. The EPDM (ethylene propylene diene monomer rubber) sealing is suited for neutral fluids and many chemicals, but it has poor resistance to oils and fats. Please note that the internal valve parts, such as the stainless steel plunger and springs, are also in contact with the medium and must be chemically compatible. Consult our chemical resistance chart to verify compatibility of housing and seals with the medium. Thanks to the ATEX and IECEx certification, this solenoid valve is suited for explosive environments. The valve has an IP65 rating if properly connected.
Pros:
- ATEX-certified
- Good protection against the environment thanks to the IP65 rating
- More reliable and durable thanks to the piston design instead of a rubber membrane
- Solenoid valves open and close very fast compared to many other valve types
Cons:
- Solenoid valves are very sensitive to dirt and can only be used with clean liquids and gases
- The coil may get hot when energized. A well ventilated environment is recommended
Series:
The Bürkert valve type 6240 is a 2/2-way semi-direct operated solenoid valve with a compact design and internal orifice diameters of up to DN 13. The special fluidic form of the valve body allows for high flow rates, and the semi-direct operation enables suitability for applications with zero differential pressure in the system. Semi-direct operation is also referred to as servo assisted operation. The 6240 makes use of a piston instead of the typical rubber membrane, which makes the valve suitable for more demanding circumstances. The spring coupling of the pilot valve to the piston of the main valve allows for gentle opening and closing of the valve, which provides for a long service life. This 2/2-way piston valve includes a variety of certifications and a diverse range of tested body and seal materials. The type 6240 works in various applications, including specialty versions for low temperatures (-30°C), high-pressure, explosion protection, and steam.
Please note: this product is made to order and can unfortunately not be returned.
Specifications
Connection size : 1/4 inch
Connection type : Inner thread cylindrical BSPP-G
Function : Normally closed
Voltage : 24 V AC,24 V DC
Material : Brass
Seal material : EPDM
Operation : Semi-direct
Recommended for : Water,Steam,Alcohols
Max pressure (bar) : 16
Kv value [m3/h] : 0.6
Features : Single mounting
Approval : Atex Zone 1,Atex Zone 21,Atex Zone 2,Atex Zone 22,IECEx Zone 1,IECEx Zone 21,IECEx Zone 2,IECEx Zone 22
Valve bore (mm) : 6
Min temperature (°C) : -30
Max temperature (°C) : 120
Electrical connection : Cable
Degree of protection (IP) : IP65
Nominal power (W) : 2
Freq. input voltage (Hz) : 50 Hz to 60 Hz
Valve ports/positions : 2/2 way
Duty cycle : 100%
Max. ambient temp. (°C) : 55
Peak power (W) : 50
Cable length (m) : 3
Min. ambient temperature (°C) : -30
Actuation : Plunger
Valve construction : Valve complete
Valve seat material : Brass
Sealing toward outside material : EPDM
Flow direction : Above seat
Installation length (mm) : 40
Explosion safety code : IECEx – II 2 G mb IIC T4 Gb,IECEx – II 2 D mb IIIC T130 °C Db,mb IIC T4 Gb,mb IIIC T130 °C Db
Max differential pressure air/gases (bar) : 16
Explosion safety : Ex-Zone 1
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