Is the STORZ Aluminum Firefighter Connector Cap with Lock & Chain compatible with standard Storz couplings of the same hook spacing?

Yes. The STORZ Aluminum Firefighter Connector Cap with Lock & Chain is compatible with standard Storz couplings that share the same hook spacing. Its symmetrical coupling system is designed for quick, effortless connections with any element matching that hook spacing, ensuring maximum compatibility and reliable sealing under working pressures up to 16 bar.

Can the STORZ Aluminum Firefighter Connector Cap with Lock & Chain be used with corrosive chemicals, and does the aluminum/NBR construction offer chemical resistance?

STORZ Aluminum Firefighter Connector Cap with Lock & Chain can be used with many chemical applications, but suitability depends on the specific corrosive chemical. The cap’s body is made of high‑quality aluminum, which offers good strength and general corrosion resistance but can be attacked by strong acids (e.g., hydrochloric, sulfuric at high concentration), strong alkalis, halides, and some chlorinated solvents. The seal is white NBR (nitrile rubber), which provides good resistance to oils, fuels, and many hydrocarbons, and acceptable performance with dilute acids and some alcohols, but NBR is not suitable for strong oxidizers, certain ketones, esters, and many chlorinated or aromatic solvents. If your application involves mildly corrosive fluids or diluted chemical mixes commonly found in industrial or agricultural settings, this construction will often perform well. For exposure to strong acids, strong bases, concentrated solvents, or aggressive oxidizers, you should verify compatibility: test materials with the specific chemical, or choose alternative materials (stainless steel, brass, or specialty alloys and elastomers like EPDM, FKM, or PTFE) known to resist those chemicals. In short: STORZ Aluminum Firefighter Connector Cap with Lock & Chain can be used with some corrosive chemicals, but confirm compatibility of aluminum and NBR with the exact chemical, concentration, temperature, and exposure time before use.

STORZ Aluminum Firefighter Connector Cap with Lock & Chain

All products, Symmetrical claw couplings/

Additional information

Material	AL – aluminum

The STORZ cap with lock and chain is a durable and reliable solution designed to secure transmission systems for liquids and bulk materials across a wide range of industries, including firefighting, irrigation, agriculture, food processing, and chemical applications. Its symmetrical coupling system ensures quick and effortless connection with other elements featuring the same hook spacing, providing maximum compatibility and efficiency in demanding environments. Crafted from high-quality aluminum, the cap guarantees strength and resistance to wear, while the integrated lock and chain prevent accidental loss during operation. With a working pressure of up to 16 bar and a robust white NBR rubber seal, it delivers excellent tightness and long-lasting performance, making it an essential component for professionals seeking safety, reliability, and convenience in their installations.

List of product variants

Article number	Product variant name	DN	BAR	Availability	Actions
ST-31-500066-11	STORZ cap 66 mm with lock (individual key), Al	-	16	In stock	Enquiry
ST-31-500081-11	STORZ blind cap 81 mm with lock (individual key), Al	-	16	In stock	Enquiry
ST-31-500089-11	STORZ blind cap 89 mm with lock (individual key), Al	-	16	In stock	Enquiry
ST-31-500105-11	STORZ blind cap 105 mm with lock (individual key), Al	-	16	In stock	Enquiry
ST-31-500115-11	STORZ blind cap 115 mm with lock (individual key), Al	-	16	In stock	Enquiry
ST-31-500133-11	STORZ blind cap 133 mm with lock (individual key), Al	-	16	In stock	Enquiry
ST-31-500148-11	STORZ blind cap 148 mm with lock (individual key), Al	-	16	In stock	Enquiry
ST-31-500160-11	STORZ blind cap 160 mm with lock (individual key), Al	-	16	In stock	Enquiry

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The STORZ cap with lock and chain is a durable and reliable solution designed to secure transmission systems for liquids and bulk materials across a wide range of industries, including firefighting, irrigation, agriculture, food processing, and chemical applications. Its symmetrical coupling system ensures quick and effortless connection with other elements featuring the same hook spacing, providing maximum compatibility and efficiency in demanding environments. Crafted from high-quality aluminum, the cap guarantees strength and resistance to wear, while the integrated lock and chain prevent accidental loss during operation. With a working pressure of up to 16 bar and a robust white NBR rubber seal, it delivers excellent tightness and long-lasting performance, making it an essential component for professionals seeking safety, reliability, and convenience in their installations.