How do the Festo Festo QSR1 Series variants differ?

Festo QSR1 Series part numbers differ by connector size and operating pressure. Use the selection guide above to pick by connector size.

How many Festo Festo QSR1 Series part numbers are listed?

6 Festo Festo QSR1 Series part numbers are listed, each with specifications and a datasheet where available.

How do I get pricing and lead time for Festo Festo QSR1 Series?

Request a quote (RFQ) for any Festo QSR1 Series part number and we confirm price, availability and lead time per line — including end-of-life and hard-to-find variants.

Festo QSR1 Series

6 variants · Festo

About the Festo Festo QSR1 Series series

The Festo Festo QSR1 Series series groups 6 related part numbers, each listed with full specifications, a datasheet where available, and an RFQ option. Variants differ by connector size and operating pressure, so you can match the exact connector size your application requires using the selection guide below. All listed Festo QSR1 Series part numbers are active and orderable.

Select a variant by

Connector size

Parameter	QSR-1/8-6	QSR-1/2-12	QSR-1/4-5/16-U	QSR-1/4-8	QSR-1/8-1/4-U	QSR-1/8-4
Connector size	—	R1/2	NPT1/4	R1/4	NPT1/8	R1/8
Operating pressure	—	-13.8 to 87 PSI (-0.95 to 6 bar)	-13.8 to 145 PSI (-0.95 to 10 bar)	-13.8 to 87 PSI (-0.95 to 6 bar)	-13.8 to 145 PSI (-0.95 to 10 bar)	-13.8 to 87 PSI (-0.95 to 6 bar)

Festo QSR1 Series

About the Festo Festo QSR1 Series series

Select a variant by

Variant comparison

Frequently asked questions

All variants

QSR-1/8-6

QSR-1/2-12

QSR-1/4-5/16-U

QSR-1/4-8

QSR-1/8-1/4-U

QSR-1/8-4

QSR-1/8-6

QSR-1/2-12

QSR-1/4-5/16-U

QSR-1/4-8

QSR-1/8-1/4-U

QSR-1/8-4