How do the Festo Festo QBY3 Series variants differ?

Festo QBY3 Series part numbers differ by connection method, mounting, operating pressure and product type. Use the selection guide above to pick by connection method.

How many Festo Festo QBY3 Series part numbers are listed?

9 Festo Festo QBY3 Series part numbers are listed, each with specifications and a datasheet where available.

How do I get pricing and lead time for Festo Festo QBY3 Series?

Request a quote (RFQ) for any Festo QBY3 Series part number and we confirm price, availability and lead time per line — including end-of-life and hard-to-find variants.

Festo QBY3 Series

9 variants · Festo

About the Festo Festo QBY3 Series series

The Festo Festo QBY3 Series series groups 9 related part numbers, each listed with full specifications, a datasheet where available, and an RFQ option. Every variant in the range shares a common material of Polybutylene Terephthalate (PBT), operating temperature of 60 °C and package of Bulk. Variants differ by connection method, mounting and operating pressure, so you can match the exact connection method your application requires using the selection guide below. All listed Festo QBY3 Series part numbers are active and orderable.

Parameter	QBY-3/8-1/2-U	QBY-3/8-3/8-U	QBY-3/8-5/16-U	QBY-3/8-1/4-U	QBY-3/8T-1/4-U	QBY-3/8T-5/16-U
Connection method	Push-In to Threaded	Push-In to Threaded	Push-In to Threaded	Push-In to Threaded	Push-In	Push-In
Mounting	Free Hanging (In-Line)	Free Hanging (In-Line)	Free Hanging (In-Line)	Free Hanging (In-Line)	Chassis Mount	Chassis Mount
Operating pressure	-14 to 145 PSI (-1 to 10 bar)	-14 to 145 PSI (-1 to 10 bar)	-14 to 145 PSI (-1 to 10 bar)	-14 to 145 PSI (-1 to 10 bar)	-14 to 145 PSI (-1 to 10 bar)	-14 to 145 PSI (-1 to 10 bar)
Product type	Y-Fitting	Y-Fitting	Y-Fitting	Y-Fitting	Y-Adapter	Y-Adapter

Festo QBY3 Series

About the Festo Festo QBY3 Series series

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Variant comparison

Shared specifications

Frequently asked questions

All variants

QBY-3/16T-U

QBY-3/8-1/2-U

QBY-3/8-1/4-U

QBY-3/8-3/8-U

QBY-3/8-5/16-U

QBY-3/8T-1/4-U

QBY-3/8T-5/16-U

QBY-3/8T-U

QBY-3/16T-5/32-U

QBY-3/16T-U

QBY-3/8-1/2-U

QBY-3/8-1/4-U

QBY-3/8-3/8-U

QBY-3/8-5/16-U

QBY-3/8T-1/4-U

QBY-3/8T-5/16-U

QBY-3/8T-U

QBY-3/16T-5/32-U