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SMC KQ2H Push-to-Connect Tube Fitting, Straight Reducing Union, PBT Body, Tube OD, Inch

Available in multiple versions

Product Specifications
Brand Name SMC Corporation
Part Number KQ2H01-03A
Material Type PBT (Polybutylene Terephthalate)
Maximum Pressure 145  PSI
LowerTemperature Range 23  Degrees Fahrenheit
Upper Temperature Range 140  Degrees Fahrenheit
System of Measurement Inch
Color White
Connector Type Tube OD
Manufacturer Series Number KQ2H
Shape Reducing Coupler
Style Name Push-to-connect
UNSPSC Code 40183100

This SMC KQ2H straight reducing union is a PBT tube fitting for connecting ... Read full product description

Product Features

  • Straight reducing union to connect two tubes of different sizes
  • Push-to-connect inch tube connections on both ends
  • PBT body for resistance to corrosion
  • Operating pressure range of -14.5 to 145 psi (-100 kPa to 1 MPa)
  • Operating temperature ranges of 23 to 140 degrees F (-5 to 60 degrees C) (ambient) and 32 to 104 degrees F (0 to 40 degrees C) (fluid)

Product Details

  • Domestic Shipping: Currently, item can be shipped only within the U.S. and to APO/FPO addresses. For APO/FPO shipments, please check with the manufacturer regarding warranty and support issues.
  • International Shipping: This item is not eligible for international shipping. Learn More
  • ASIN: B00AM41HZG

Product Description

This SMC KQ2H straight reducing union is a PBT tube fitting for connecting two tubes of different sizes. It has push-to-connect inch tube connections on both ends. The body is made of polybutylene terephthalate (PBT) for resistance to corrosion, and the tube seals are made of nitrile butadiene rubber (NBR) for resistance to oils and extreme temperatures. A chuck and collet provide secure retention of tubing, and the release button allows tube removal with little force. The fitting can be used with nylon, soft nylon, polyurethane, fluorinated ethylene propylene (FEP), and perfluoroalkoxy (PFA) tubing. It has an operating pressure range of -14.5 to 145 pounds per square inch (psi) (-100 kPa to 1 MPa), an ambient temperature range of 23 to 140 degrees F (-5 to 60 degrees C), and a fluid temperature range of 32 to 104 degrees F (0 to 40 degrees C). This PBT tube fitting is Restriction of Hazardous Substances (RoHS) compliant, and can be used in a broad range of fluid power applications, including temperature control, compressed air equipment, medical instrumentation, and motor vehicle controls, among others.


Compatible tubing materials Nylon, soft nylon, polyurethane, FEP, PFA
Fluid Air or water
Operating pressure range 14.5 to 145 psi (-100 kPa to 1 MPa)
Operating temperature range (ambient) 23 to 140 degrees F (-5 to 60 degrees C)
Operating temperature range (fluid)) 32 to 104 degrees F (0 to 40 degrees C)

Tube fittings are components used for connecting, branching, terminating, and changing the direction of tubing in pneumatic and hydraulic systems. They are made of brass, stainless steel, polybutylene terephthalate (PBT), and other materials that resist corrosion and wear. Tube fittings have various types of connections, including threaded, welded, barbed, and push-to-connect (also called one-touch). Push-to-connect connections do not require tools or sealants. Tube fittings are used in various applications, including machine tools, airplane and truck controls, and automated production lines, among others.

SMC Corporation manufactures actuators, valves, airline equipment, connector fittings, electrical products, vacuum products, dryers, temperature control chillers, and accessories. SMC Corporation of America is headquartered in Noblesville, IN, and meets International Organization for Standardization (ISO) standard 9001:2008.

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