The COAX SPI / SPP PC Control Valves are externally controlled, proportional pressure reduction valves ideal for a variety of media, including gaseous, liquid, highly viscous, and contaminated substances. Available in orifice sizes from DN 8 to DN 32 and supporting pressures from PN 0 to 200 bar, these valves feature a threaded port design and spring return mechanism. Constructed from aluminium, brass, or stainless steel, they offer diverse sealing options, including NBR, PTFE, FPM, EPDM, and speciality materials, and operate on DC 24 V.