Confirm the exact configuration
Use the manufacturer part number and model code—not appearance alone. Connection, size, material, voltage, pressure, seal, and control options can differ within the same product family.

SMC
The SMC 21-VQ120 is an official catalog model belonging to the 10/21-VQ Clean Room Valve series, engineered as a clean series component that is copper, fluorine, and silicon-free with low particle generation. This VQ1 valve configuration features options for actuation types including 2-position single or double and 3-position closed, exhaust, or pressure centers, alongside metal or rubber seal types and standard, high pressure, negative COM, external pilot, or low wattage function variations. Coil voltage is specified at either 24 VDC or 12 VDC with a light and surge voltage suppressor, complemented by non-locking push or locking manual override options. Submit the exact part number, quantity, and application requirements to receive a formal quotation for this SMC component.
Industrial and obsolete parts are priced per enquiry: the final price depends on available stock, condition, quantity, and your delivery destination, so a fixed list price would be misleading. Request a quote and we confirm current pricing, lead time, and sourcing options — including hard-to-find and discontinued SMC references — within one business day.
For a faster response, include quantity, condition, and delivery destination.
Verified configuration
Engineering context
Use the manufacturer part number and model code—not appearance alone. Connection, size, material, voltage, pressure, seal, and control options can differ within the same product family.
Provide quantity, delivery country and ZIP/postal code, required condition, target date, and photographs of the existing nameplate when available.
Our sourcing response is prepared against SMC 21-VQ120. Final compatibility remains subject to the machine manufacturer’s requirements and complete application data.