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The SMC PNEUMATICS KQ2U01-35AS is a push-to-connect Y-connector tube fitting designed for pneumatic tubing systems. It accepts 1/8-inch OD tubing and connects via a 1/4-inch NPT thread, allowing a single line to branch into two directions without tools or compression hardware. The fitting body is constructed from brass with a polybutylene collet, rated to a maximum working pressure of 145 psi. The push-to-connect mechanism provides a secure, repeatable seal suitable for compressed-air plumbing in light industrial, HVAC control, and automation applications. Installation and removal are fast, making this fitting a practical choice for systems that require periodic reconfiguration or service access.
This fitting is suited for use in pneumatic control circuits, instrumentation tubing runs, and low-pressure compressed-air distribution where a Y-branch configuration is needed. It performs across a working temperature range of 23 degrees F to 140 degrees F, making it appropriate for standard indoor mechanical and automation environments. Licensed HVAC technicians and instrumentation technicians typically install fittings of this type when routing control air to actuators, dampers, or pneumatic control devices.
Designed as an OEM-style push-to-connect fitting for pneumatic tubing systems using 1/8-inch OD tubing and 1/4-inch NPT threaded ports in light industrial and HVAC control applications.
Depressurize and isolate the pneumatic circuit completely before removing or installing any fittings. Insert tubing straight and fully into the collet until it seats to ensure a leak-free connection. To release tubing, depress the collet ring evenly while pulling the tube straight out. Follow applicable mechanical and pneumatic system codes for your jurisdiction when integrating into control air circuits.
We pulled together the parts most installs need for this unit, plus a few add-ons worth a look. Check what you need — nothing here blocks checkout.
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