Bürkert semi-direct operating 2/2-way solenoid valve with DN 50 flange and 24V DC (direct current) coil. The valve has a cast iron (GG25) housing with NBR sealing and an orifice size of 50 mm. The circuit function of the solenoid valve is normally closed, which means the valve opens when voltage is applied. Suitable for systems with a differential pressure of 0-12 bar and a maximum temperature of 80°C. The valve has a Kv-value of 38 m3/h, this translates to a flow rate of 633.33 l/min at the differential pressure of 1 bar (for water). The cast iron housing is suited for neutral fluids. The NBR (nitrile rubber) sealing is suited for water, air, alcohol and is fairly resistant to oil and petrol. NBR is unsatisfactory with oxidising fluids. 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. The valve’s design prevents water hammering. Suitable for vacuum applications. The valve has an IP65 rating if properly connected.
Important advantages
- Suitable for vacuum applications
- The risk of water hammer is low, thanks to the dampened closing
- Good protection against the environment thanks to the IP65 rating
- Opens without differential pressure thanks to the hard-coupled membrane
- Quiet closing thanks to the damped design
- Bürkert design: proven reliability & durability
0290 series
The Bürkert 0290 valve is a semi-direct (servo assisted) solenoid valve of the S.EV series. The membrane features a fixed coupling to a plunger. This means that the valve opens without a differential pressure over the valve. It can be used for low pressure applications, such as gravity fed systems or closed circulating circuits. The valve is designed for a quiet operation. All UC variants have electronic control to achieve a high inrush current to open the valve and a low holding current to keep the valve in the opened position. This ‘kick and drop’ system leads to a low power consumption and a low heat generation which gives the 0290 a long lifecycle.
Please note: this product is made to order and can therefore unfortunately not be returned.
Specifications
Connection size : 50 mm
Connection type : Flange
Function : Normally closed
Voltage : 24 V DC
Material : Cast iron
Seal material : NBR (nitrile rubber)
Operation : Semi-direct
Recommended for : Water,Air
Max pressure (bar) : 12
Kv value [m3/h] : 38
Features : Anti-waterhammer,For vacuum
Material quality : Cast iron GG 25 (GJL-250)
Valve bore (mm) : 50
Min temperature (°C) : -10
Max temperature (°C) : 80
Electrical connection : DIN-A
Degree of protection (IP) : IP65
Nominal power (W) : 30
Valve ports/positions : 2/2 way
Duty cycle : 100%
Flange compression class : PN 16
Max. ambient temp. (°C) : 55
Peak power (W) : 30
Explosion safety : None
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