How do the Festo Festo QB51 Series variants differ?

Festo QB51 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 QB51 Series part numbers are listed?

5 Festo Festo QB51 Series part numbers are listed, each with specifications and a datasheet where available.

How do I get pricing and lead time for Festo Festo QB51 Series?

Request a quote (RFQ) for any Festo QB51 Series part number and we confirm price, availability and lead time per line — including end-of-life and hard-to-find variants.

Festo QB51 Series

5 variants · Festo

About the Festo Festo QB51 Series series

The Festo Festo QB51 Series series groups 5 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 QB51 Series part numbers are active and orderable.

Parameter	QB-5/16H-1/4-U	QB-5/16H-5/32-U	QB-5/16T-1/4-U	QB-5/16T-5/32-U	QB-5/16T-U
Connection method	Push-In to Sleeve	Push-In to Sleeve	Push-In	Push-In	Push-In
Mounting	Free Hanging (In-Line)	Free Hanging (In-Line)	Free Hanging (In-Line)	Free Hanging (In-Line)	Chassis Mount
Operating pressure	-13.8 to 145 PSI (-0.95 to 10 bar)	-13.8 to 145 PSI (-0.95 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	Straight Fitting	Straight Fitting	Adapter	Adapter	Straight Fitting

Festo QB51 Series

About the Festo Festo QB51 Series series

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All variants

QB-5/16H-1/4-U

QB-5/16H-5/32-U

QB-5/16T-1/4-U

QB-5/16T-5/32-U

QB-5/16T-U

QB-5/16H-1/4-U

QB-5/16H-5/32-U

QB-5/16T-1/4-U

QB-5/16T-5/32-U

QB-5/16T-U