Storz Self-Locking Coupling Cap

A Storz self-locking coupling cap is a type of cap used with firefighting hoses and hydrants equipped with Storz connections. Storz couplings are symmetrical, which means they can be connected without worrying about the orientation of the coupling halves, and they use a quarter-turn to lock securely in place. These couplings are widely used due to their ease of use, especially in emergency situations where quick and reliable connections are essential.

Here is a detailed look at the Storz self-locking coupling cap:

1. Purpose: The self-locking cap is used to seal the female part of a Storz connection when it is not in use. This protects the connection from dirt, debris, and damage, ensuring it is ready for operation whenever needed.

2. Self-Locking Feature: The self-locking mechanism ensures that the cap stays securely fastened to the female connection without the need for additional tools or tightening. This is particularly important in firefighting to prevent accidental removal or loosening of the cap, which might otherwise lead to loss of water or pressure in critical moments.

3. Ease of Use: To secure the cap, you align the lugs of the cap with the recesses on the Storz coupling and then twist it. A spring-loaded or similar locking mechanism within the cap snaps into place, locking the cap onto the coupling to prevent it from being accidentally undone.

4. Materials: These caps are usually made from materials like aluminum or brass to provide durability and resistance to corrosion. The choice of material will depend on the application and the specific requirements such as weight and strength.

5. Compatibility: Since Storz is a standardized connection, the self-locking caps are typically compatible with all Storz couplings of the same size, regardless of the manufacturer.

6. Sealing: High-quality Storz self-locking caps often feature gaskets or seals to ensure a water-tight closure, preventing any leakage or contamination.

7. Sizes: Storz coupling caps come in various sizes to match the different sizes of Storz couplings used in firefighting and industrial applications.

8. Safety: Self-locking caps sometimes have a safety feature such as a pressure relief valve, which can prevent the build-up of pressure behind the cap if it heats up due to a nearby fire or other heat sources.

9. Identification: The caps can be color-coded or labeled for easy identification, ensuring that the correct cap is used with the correct coupling size and for quick recognition in emergency situations.

10. Maintenance: The self-locking mechanism needs occasional maintenance to ensure proper function. This could include cleaning and lubrication, following the manufacturer’s recommendations.

In summary, the Storz self-locking coupling cap is an important component in firefighting equipment, providing quick, secure sealing of water supply and fire hose connections. Its self-locking design enhances operational efficiency and safety, ensuring that equipment is always ready for immediate action.

Pictures	Size					Main Material
	D1		D	L	Specs	Material
	Φ115		Φ156	47	4″	Aluminium Alloy
	Φ148		Φ196	52	5″	Aluminium Alloy
	Φ160		Φ215	57	6″	Aluminium Alloy
	Φ220		Φ280	60	8″	Aluminium Alloy
	Φ278		Φ339	64	10″	Aluminium Alloy
	Φ316		Φ386	68	12″	Aluminium Alloy
	Φ366		Φ450	78	14″	Aluminium Alloy