The Festo K-3-M5 (Part Number: 3660) is a highly reliable and compact 3/2-way pneumatic manual control valve designed for versatile industrial automation and fluid control applications. Featuring a durable aluminum body and a black knurled push-button actuator with a spring return mechanism, this valve ensures precise and responsive manual control of compressed air systems. With standard M5 threaded ports and a broad operating pressure range of -0.95 to 8 bar (-14.4 to 116 psi), it is perfectly suited for both vacuum and standard pneumatic operations. Its compact inline design and integrated through mounting holes allow for quick, secure, and space-saving installation in tight machine environments.