One Stop Fire Products Fire Fighting Pumps For Your Farm, Camp or Cottage!

Coupling Methods

Types of Couplers

Couplers are the fittings used to attach hoses, pumps, nozzles, etc. to each other. Think of the task of attaching a garden hose to the faucet. The point where the faucet and the hose make contact is what we are interested in. A coupling device is usually part of the component when you receive it. However, it may require an adapter in order to attach to a component of a different size or style of coupling. Proper coupling will allow the components to mate and provide a strong leak-free union. The connection process may require tools in order to get things tight.

Common Coupling Methods

1. Threaded
   The most common method of hose or pipe connection. One half of the connection is a male thread while the other is female. Most garden hoses use this method. The connection is completed by bringing the two components together and the rotating one against the other for several revolutions. There is a risk of cross threading and damage to the connection surface if alignment is not true. It may take a minute or two to complete the task. There are, however, many different types of threads used for this purpose. For more information, see the section on Thread Standards.
   
   
2. Quarter Turn Quick Connect
   These fittings use tapered collars and lugs and a quarter turn to lock to make a secure connection. The coupling parts are genderless (the same) -- no male/female matching. Tools are not required and connection time is under 3 seconds. Often referred to as Forestry Quick Connect or with the tradename Merlug.
   
   
3. CamLock
   This is a heavy duty coupling method that is very strong and relatively quick to use. It is often found in industrial settings with larger diameter hoses. Operation involves the sliding of one component inside the other. Two lever operated cams are then rotated -- firmly locking the two pieces together. This is a bulky fitting with moving parts and it connects without the use of tools. It takes 15-30 seconds to engage and requires some physical effort. In fire fighting, this method can be used for suction hoses but never for discharge hoses.
   
   
4. Other Coupling Methods
   There are other type of couplers that may also be encountered. The Storz coupler is one used in fire fighting but is quite expensive and mainly for larger diameter hoses. It is not normally used in a home fire fighting setting. When considering a home fire fighting system, your chosen components should have fast easy-to-connect fittings that are compatible with fire fighting services that may come to your aid in the event of an emergency.