China high quality CZPT High Quality Fire Fighting Equipment Storz Coupling coupling definition

Product Description

Supplier’s popular products


Product Description

Fire Hose Coupling:
Fire hose coupling is a significant part which applied in connecting with fire hose, fire nozzle and indoor, outdoor fire hydrant.  A hose coupling is a kind of fitting located on the end of the fire hose, which is made of steel, brass, aluminum. The coupling has threading on each end, a female end and a male end, allowing the hose to connect with another hose or other water resource. Our fire coupling are manufactured to various standards. Such as STORZ, BS, GOST, MACHINO etc.

Technical data:

Name GOST Coupling
Material Aluminum / Brass
Nominal Diameter(mm) 50mm / 65mmm
Nominal Working Pressure(MPa/Bar) 1.6Mpa/16Bar
Strength test pressure(Mpa) 2.4MPa/24Bar
Applicable Medium Clean Water, foam mixture liquid


Model Fire Hose Coupling Thread Coupling  Machino Coupling
Type KD50 KD50 KY50 KY50 KDK65Z KDK80Z
Nominal diameter(mm) DN50 DN65 DN50 DN65 DN65 DN80
Nominal working pressure(Mpa) 1.6
Strength test pressure(Mpa) 2.4
Applicable medium clean water, foam mixture liquid



Detailed Photos


Different size are available.
   2  50mm   
   2-1/2  65mm 

The material of the fire coupling: Aluminum
More convenient to use

1) Built-in rubber ring

Good sealing, not easy to leak
2) Die-casting technique
The surface is smooth and flat.


Related Products

Camlock Coupling

Machino Coupling

BS Coupling

NH Coupling

Storz Coupling




Company Profile




Choosing us is the right decision!

1. Are you a factory or trading company?
    We are a professional manufacturer. We warmly welcome clients from CZPT to visit our factory
    and cooperate with us. We can offer OEM & ODM service.

2. Can you produce goods with special specification ?
    Our company focuses on customized products. First of all, we need to know the specification in details,   and then we need to check with our technology department. We will give customers satisfying reply as soon as possible.

3.  How long is the delivery time?
    30-45 days after the advance payment.

4. What’s your advantage?
    Independent R&D team, professional production and sales team, great production capacity sustainable supply. Use the best material and production process. Low defective rate.

5. How can we guarantee quality?
   Always a pre-production sample before mass production;
   Always final Inspection before shipment;


Shipping Cost:

Estimated freight per unit.

To be negotiated
Water Form: DC Gun
Material: Aluminum/Brass
Pressure Range: Low-Pressure Water Gun
US$ 0.9/Piece
1 Piece(Min.Order)


Order Sample



Customized Request


What Is a Coupling?

A coupling is a mechanical device that links two shafts together and transmits power. Its purpose is to join rotating equipment while permitting a small amount of misalignment or end movement. Couplings come in a variety of different types and are used in a variety of applications. They can be used in hydraulics, pneumatics, and many other industries.


Coupling is a term used to describe a relationship between different modules. When a module depends on another, it can have different types of coupling. Common coupling occurs when modules share certain overall constraints. When this type of coupling occurs, any changes to the common constraint will also affect the other modules. Common coupling has its advantages and disadvantages. It is difficult to maintain and provides less control over the modules than other types of coupling.
There are many types of coupling, including meshing tooth couplings, pin and bush couplings, and spline couplings. It is important to choose the right coupling type for your specific application to get maximum uptime and long-term reliability. Listed below are the differences between these coupling types.
Rigid couplings have no flexibility, and require good alignment of the shafts and support bearings. They are often used in applications where high torque is required, such as in push-pull machines. These couplings are also useful in applications where the shafts are firmly attached to one another.
Another type of coupling is the split muff coupling. This type is made of cast iron and has two threaded holes. The coupling halves are attached with bolts or studs.


The coupling function is an incredibly versatile mathematical tool that can be used in many different scientific domains. These applications range from physics and mathematics to biology, chemistry, cardio-respiratory physiology, climate science, and electrical engineering. The coupling function can also help to predict the transition from one state to another, as well as describing the functional contributions of subsystems in the system. In some cases, it can even be used to reveal the mechanisms that underlie the functionality of interactions.
The coupling selection process begins with considering the intended use of the coupling. The application parameters must be determined, as well as the operating conditions. For example, if the coupling is required to be used for power transmission, the design engineer should consider how easily the coupling can be installed and serviced. This step is vital because improper installation can result in a more severe misalignment than is specified. Additionally, the coupling must be inspected regularly to ensure that the design parameters remain consistent and that no detrimental factors develop.
Choosing the right coupling for your application is an important process, but it need not be difficult. To find the right coupling, you must consider the type of machine and environment, as well as the torque, rpm, and inertia of the system. By answering these questions, you will be able to select the best coupling for your specific application.


A coupling is a device that connects two rotating shafts to transfer torque and rotary motion. To achieve optimal performance, a coupling must be designed for the application requirements it serves. These requirements include service, environmental, and use parameters. Otherwise, it can prematurely fail, causing inconvenience and financial loss.
In order to prevent premature failure, couplings should be properly installed and maintained. A good practice is to refer to the specifications provided by the manufacturer. Moreover, it is important to perform periodic tests to evaluate the effectiveness of the coupling. The testing of couplings should be performed by qualified personnel.
China high quality CZPT High Quality Fire Fighting Equipment Storz Coupling   coupling definitionChina high quality CZPT High Quality Fire Fighting Equipment Storz Coupling   coupling definition
editor by CX 2023-08-03


As one of leading coupling manufacturers, suppliers and exporters of mechanical products, We offer coupling and many other products.

Please contact us for details.

Mail:[email protected]

Manufacturer supplier exporter of coupling

Recent Posts