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The SMC PNEUMATICS KQ2H11-37AS is a push-to-connect tube fitting connector designed for fast, tool-free tubing connections in pneumatic and fluid systems. Built from brass with a polybutylene body, this fitting accepts 3/8 inch OD tubing and connects via a 1/2 inch NPT male thread. It is rated for a maximum working pressure of 145 psi and handles operating temperatures from 23 degrees F to 140 degrees F. The compact design supports quick tube insertion and secure retention without soldering, flaring, or ferrule compression. Licensed plumbers, pipefitters, and pneumatic system technicians are the typical installers.
This fitting is suited for light industrial and commercial pneumatic plumbing applications where push-to-connect convenience is needed at 1/2 inch NPT threaded ports. It is commonly used in compressed air distribution lines, pneumatic control circuits, and low-pressure fluid conveyance systems. The brass and polybutylene construction makes it compatible with a range of dry air and compatible fluid media. It is sold individually with a minimum order quantity of one unit per package.
Designed as an OEM-style replacement or drop-in addition for pneumatic and fluid systems utilizing 1/2 inch NPT threaded ports and 3/8 inch OD tubing lines.
Installation is typically performed by licensed plumbers, pipefitters, or qualified pneumatic technicians. Depressurize the system completely before removing or installing any fittings. Apply thread sealant or PTFE tape to the NPT threads in accordance with applicable plumbing or pneumatic codes. Do not exceed the rated working pressure of 145 psi or the maximum temperature of 140 degrees F during operation.
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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