Cashco 4381S1 is a pressure-reducing regulator designed to lower upstream pressure to a controlled downstream setting of 5–30 psig, offered in a compact 1/4" NPT configuration. The body is stainless steel (316L) with a stainless steel spring chamber and NPT end connections, and the 4381 family includes trim configurations such as PTFE-seated valves (S3 trim) and stainless steel seating. An optional Opt-4 Stabilizer is available for gaseous service to improve stability in fluctuating flow. Common applications include gas and other process media in industrial piping where precise low-pressure regulation is required.
