Bürkert compact motor valves

Recently released compact motor valves from Bürkert use two different drive and valve concepts, depending on the orifice size. The first is based on linear drive seat valves for orifices DN2 to DN6 (Type 3270: shut-off valve; Type 3280: proportional valve). For the larger orifices DN8 to DN25, rotary drive disc valves are used. They are likewise available as shut-off valves (Type 3275) and as proportional valves (Type 3285).

Types 3270 and 3280 are housed in a standard body with dimensions of 137 x 55 x 64 mm. For Types 3275 and 3285, there are three compact sizes due to the larger spectrum of orifices. The valve bodies are available in brass or stainless steel.

Motor valves offer an alternative to solenoid valves in less dynamic applications which do not require response times in the millisecond range. They also feature low energy consumption due to negligible holding power for a defined valve opening position and precise positioning due to high-quality electric stepper motors.

The compact valves can be used with combustible gases at pressures from 0 to 3 bar and with neutral gases and liquids up to 6 bar. Seals of FKM or NBR and a body of polyphenylene sulfide and polycarbonate make them very robust. The compact valves are designed for an ambient temperature from -10°C to 60°C and fluid temperatures from 0°C to 70°C.