Mosmatic Check Valve – 90.033 – 2.4", IN 3/8" NPTF x OUT 1/4" NPTF – Brass – 4000 psi

The Mosmatic 90.033 Check Valve is a brass one-way valve designed for medium to high-pressure systems up to 4000 psi. Its 3/8" NPTF inlet and 1/4" NPTF outlet allow smooth integration in setups that require different thread sizes on each end. Engineered with a hard spring mechanism, it opens at ~14 psi and closes at ~20 psi, helping to prevent reverse flow and maintain system efficiency. Its 2.4" length makes it an excellent solution for compact installations. Applications: Car wash and spray systems Compressed air and fluid control lines Pressure washers Step-down threaded connections Features: Solid brass construction Rated up to 4000 psi Mixed NPTF thread sizes (3/8" in, 1/4" out) Internal hard spring for reliable one-way flow Lightweight and corrosion resistant   Specs Material: BrassMax Pressure: 4000 psiOpening Pressure: ~14 psiClosing Pressure: ~20 psiInlet: 3/8" NPTFOutlet: 1/4" NPTFLength: 2.4"Nominal Width: 1/4"Temperature: 200°FWeight: 0.4 lbs