Is the STORZ Firefighter Coupling with BSP Female Thread, Aluminum compatible with standard BSP hoses and fittings used in firefighting and irrigation?

Yes. The STORZ Firefighter Coupling with BSP Female Thread, Aluminum is compatible with standard BSP hoses and fittings used in firefighting and irrigation. Its internal BSP thread allows direct mating with BSP male-threaded components, and the symmetrical Storz connection ensures quick, secure coupling. The large unobstructed flow diameter supports efficient media transfer with minimal pressure loss. Choose the forged aluminum version for higher durability and up to 16 bar working pressure with a white NBR seal for demanding firefighting applications; the cast version is a cost-effective option rated to 6 bar with a black NBR seal for lighter irrigation or general use.

Can the STORZ Firefighter Coupling with BSP Female Thread, Aluminum be used with pumps and valves rated above its specified working pressure?

No. The STORZ Firefighter Coupling with BSP Female Thread, Aluminum must not be used with pumps or valves rated above its specified working pressure. Use must be limited to the working pressure of the chosen version: up to 16 bar for the forged adaptor and up to 6 bar for the cast adaptor. Exceeding these limits risks seal failure, structural damage, leaks or hazardous disconnection. Always match system components to the lowest rated element and follow applicable safety standards and manufacturer guidance.

A STORZ fire coupling with thread internal BSP, aluminum

All products, Symmetrical claw couplings/

Additional information

Material	AL – aluminum

Adapter STORZ with thread internal BSP intended for installation transfer for liquid and bulk substances. used in firefighting, systems irrigation, industry chemical, food, agriculture etc. characterized by high, unobstructed diameter bore. O symmetrical construction parts connection, thanks to this in straight way combines je of each other. connect can element o the same spacing lugs. Available in version forged o pressure working up to 16 bar and in version cast, characterized by significantly smaller strength o pressure working up to 6 bar. Material: aluminum. Working pressure: 16 bar (coupling forged), 6 bar (coupling cast). gasket: white NBR rubber (coupling forged), black NBR rubber (coupling cast).

List of product variants

Article number	Product variant name	DN	BAR	Availability	Actions
ST-21-031050-11	Adapter STORZ 31 mm with 1/2" BSP female, Al	-	16	In stock	Enquiry
ST-21-031050-US	Adapter STORZ 31 mm with 1/2" BSP female, Al, cast	-	6	In stock	Enquiry
ST-21-031075-11	Adapter STORZ 31 mm with 3/4" BSP female, Al	-	16	In stock	Enquiry
ST-21-031075-US	Adapter STORZ 31 mm with 3/4" BSP female, Al, cast	-	6	In stock	Enquiry
ST-21-031100-11	Adapter STORZ 31 mm with 1" BSP female, Al	-	16	In stock	Enquiry
ST-21-031100-US	Adapter STORZ 31 mm with 1" BSP female, Al, cast	-	6	In stock	Enquiry
ST-21-031125-11	Adapter STORZ 31 mm with 1.1/4" BSP female, Al	-	16	In stock	Enquiry
ST-21-044100-11	Adapter STORZ 44 mm with 1" BSP female, Al	-	16	In stock	Enquiry
ST-21-044125-11	Adapter STORZ 44 mm with 1.1/4" BSP female, Al	-	16	In stock	Enquiry
ST-21-051100-11	Adapter STORZ 51 mm with 1" BSP female, Al	-	16	In stock	Enquiry
ST-21-051125-11	Adapter STORZ 51 mm with 1.1/4" BSP female, Al	-	16	In stock	Enquiry
ST-21-051150-11	Adapter STORZ 51 mm with 1.1/2" BSP female, Al	-	16	In stock	Enquiry
ST-21-051200-11	Adapter STORZ 51 mm with 2" BSP female, Al	-	16	In stock	Enquiry
ST-21-059150-16	Adapter STORZ 59 mm with 1.1/2" BSP female, Al	-	16	In stock	Enquiry
ST-21-059200-16	Adapter STORZ 59 mm with 2" BSP female, Al	-	16	In stock	Enquiry
ST-21-066075-16	Adapter STORZ 66 mm with 3/4" BSP female, Al	-	16	In stock	Enquiry
ST-21-066100-16	Adapter STORZ 66 mm with 1" BSP female, Al	-	16	In stock	Enquiry
ST-21-066100-US	Adapter STORZ 66 mm with 1" BSP female, Al, cast	-	6	In stock	Enquiry
ST-21-066125-16	Adapter STORZ 66 mm with 1.1/4" BSP female, Al	-	16	In stock	Enquiry
ST-21-066125-US	Adapter STORZ 66 mm with 1.1/4" BSP female, Al, cast	-	6	In stock	Enquiry
ST-21-066150-16	Adapter STORZ 66 mm with 1.1/2" BSP female, Al	-	16	In stock	Enquiry
ST-21-066150-US	Adapter STORZ 66 mm with 1.1/2" BSP female, Al, cast	-	6	In stock	Enquiry
ST-21-066175-16	Adapter STORZ 66 mm with 1.3/4" BSP female, Al	-	16	In stock	Enquiry
ST-21-066200-16	Adapter STORZ 66 mm with 2" BSP female, Al	-	16	In stock	Enquiry
ST-21-066200-US	Adapter STORZ 66 mm with 2" BSP female, Al, cast	-	6	In stock	Enquiry
ST-21-066250-16	Adapter STORZ 66 mm with 2.1/2" BSP female, Al	-	16	In stock	Enquiry
ST-21-066250-US	Adapter STORZ 66 mm with 2.1/2" BSP female, Al, cast	-	6	In stock	Enquiry
ST-21-081100-11	Adapter STORZ 81 mm with 1" BSP female, Al	-	16	In stock	Enquiry
ST-21-081125-11	Adapter STORZ 81 mm with 1.1/4" BSP female, Al	-	16	In stock	Enquiry
ST-21-081150-11	Adapter STORZ 81 mm with 1.1/2" BSP female, Al	-	16	In stock	Enquiry
ST-21-081200-11	Adapter STORZ 81 mm with 2" BSP female, Al	-	16	In stock	Enquiry
ST-21-081250-11	Adapter STORZ 81 mm with 2.1/2" BSP female, Al	-	16	In stock	Enquiry
ST-21-081300-11	Adapter STORZ 81 mm with 3" BSP female, Al	-	16	In stock	Enquiry
ST-21-089200-16	Adapter STORZ 89 mm with 2" BSP female, Al	-	16	In stock	Enquiry
ST-21-089200-US	Adapter STORZ 89 mm with 2" BSP female, Al, cast	-	6	In stock	Enquiry
ST-21-089250-16	Adapter STORZ 89 mm with 2.1/2" BSP female, Al	-	16	In stock	Enquiry
ST-21-089250-US	Adapter STORZ 89 mm with 2.1/2" BSP female, Al, cast	-	6	In stock	Enquiry
ST-21-089300-16	Adapter STORZ 89 mm with 3" BSP female, Al	-	16	In stock	Enquiry
ST-21-089300-50	Adapter STORZ 89 mm with 3" BSP female, Al/steel	-	16	In stock	Enquiry
ST-21-089300-US	Adapter STORZ 89 mm with 3" BSP female, Al, cast	-	6	In stock	Enquiry
ST-21-105300-11	Adapter STORZ 105 mm with 3" BSP female, Al	-	16	In stock	Enquiry
ST-21-115400-11	Adapter STORZ 115 mm with 4" BSP female, Al	-	16	In stock	Enquiry
ST-21-133400-11	Adapter STORZ 133 mm with 4" BSP female, Al	-	16	In stock	Enquiry
ST-21-133400-US	Adapter STORZ 133 mm with 4" BSP female, Al, cast	-	6	In stock	Enquiry
ST-21-133450-11	Adapter STORZ 133 mm with 4.1/2" BSP female, Al	-	16	In stock	Enquiry
ST-21-148400-11	Adapter STORZ 148 mm with 4" BSP female, Al	-	16	In stock	Enquiry
ST-21-148500-11	Adapter STORZ 148 mm with 5" BSP female, Al	-	16	In stock	Enquiry
ST-21-160600-11	Adapter STORZ 160 mm with 6" BSP female, Al	-	16	In stock	Enquiry
ST-21-220800-11	Adapter STORZ 220 mm with 8" BSP female, Al, PN10	-	10	In stock	Enquiry
ST-21-278000-11	Adapter STORZ 278 mm with 10" BSP female, Al, PN10	-	10	In stock	Enquiry

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Adapter STORZ with thread internal BSP intended for installation transfer for liquid and bulk substances. used in firefighting, systems irrigation, industry chemical, food, agriculture etc. characterized by high, unobstructed diameter bore. O symmetrical construction parts connection, thanks to this in straight way combines je of each other. connect can element o the same spacing lugs. Available in version forged o pressure working up to 16 bar and in version cast, characterized by significantly smaller strength o pressure working up to 6 bar. Material: aluminum. Working pressure: 16 bar (coupling forged), 6 bar (coupling cast). gasket: white NBR rubber (coupling forged), black NBR rubber (coupling cast).