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EXCELLENT MATERIAL: This air check valve is made of high-quality stainless steel, with stable performance, not easy to rust, and good air tightness.
BSPP FEMALE THREAD: This air check valve has a precision BSPP internal thread, which is easy to connect and does not slip.
SIMPLE INSTALLATION: This is an easy to install and disassemble hexagonal internal thread air check valve, which can be used for water pipe connection.
APPLICATION RANGE: The air check valve is suitable for pipe connection under air, water, oil and other media.
4 SIZES: This air check valve is available in 4 styles: 1/8in, 1/4in, 3/8in, 1/2in, which can meet your requirements.