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:
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Car wash and spray systems
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Compressed air and fluid control lines
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Pressure washers
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Step-down threaded connections
Features:
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Solid brass construction
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Rated up to 4000 psi
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Mixed NPTF thread sizes (3/8\\” in, 1/4\\” out)
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Internal hard spring for reliable one-way flow
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Lightweight and corrosion resistant
Specs
Material: Brass
Max Pressure: 4000 psi
Opening Pressure: ~14 psi
Closing Pressure: ~20 psi
Inlet: 3/8\\” NPTF
Outlet: 1/4\\” NPTF
Length: 2.4\\”
Nominal Width: 1/4\\”
Temperature: 200°F
Weight: 0.4 lbs
