4V series (4V100 / 4V200 / 4V300 / 4V400) 4-way 5-port solenoid valves
Coverage 4V covers 5/2 single solenoid (spring return), 5/2 double solenoid (air return), and 5/3 center-condition models (e.g. the 4V430-series center types) across the 4V100–4V400 sizes. Voltages 12/24 VDC and 24/110/220 VAC (50/60 Hz). Electrical connection by grommet or DIN connector with LED. NPT threads.
STC's 4V series is a 4-way, 5-port pneumatic directional solenoid valve range — 4V110 (1/8") through 4V410 (1/2"). Published flow runs from roughly 25 SCFM at 100 PSI on the 1/8" body to roughly 160 SCFM at 100 PSI on the 1/2" body; response time under 20 ms; operating pressure roughly 21–115 PSI. Single solenoid is spring-return, double solenoid is air-return.
Why STC here STC is an economy directional-valve line whose 4V series follows the widely adopted 4V port-and-mounting pattern, making it a straightforward like-for-like option for price-driven jobs and for MRO replacement where the existing valve already follows that common form factor. STC is a direct-sourced line for SPC.