Except air source preparation, pneumatic actuator and directional valve, air fitting is also an important member of the pneumatic automation system. Compressed air force is transferred from air compressors to air source preparations, directional valves and finally arrive at pneumatic actuators via air hose, and NTA air fittings are widely used to connecting air hose with air source preparation, directional valve and pneumatic actuators. NTA manufactures wide range of air fittings for different applications: plastic push in fittings, brass push in fittings, brass push on fittings, brass compression fittings, stainless steel fittings, barbed fittings, brass adapters, brass plugs, mini pipe fittings, speed controllers, hand valve, throttle valve. After years of improving, we developed an innovative structure which helps NTA pneumatic push in fitting life time reaching 16 million cycles, while other fitting suppliers in China only reaching 0.05 to 5 million cycles. Quick Couplings And Safety Couplings From NTA Enable You To Supply Pneumatic Systems With Compressed Air Quickly And Easily. Different Sizes Allow Different Applications To Be Addressed. Couplings Are Traditionally Used In Pneumatic Tools, Hall Installations And Laboratory Equipment. NTA Has Europe type self-lock mini coupler, Japan type pneumatic quick coupler, USA type pneumatic quick coupler, Europe type pneumatic quick coupler, Australian type pneumatic quick coupler.