Worm Drive clips are a low cost option of fastening for very low pressure and low temperature soft wall hose connection applications. This is suitable for low pressure air hoses and is not recommended for applications that require a higher operating pressure or ones that need to be leak free. Blow outs are a common occurrence and can become costly to maintain however, the simplicity of the Jubilee clip system means it can be repaired cheaply and quickly on site. It is worth noting that there is some important information about using this method of fastening in an environment where consumables are being produced:
Why are they considered bad practice?
- Firstly, there is the issue of employee welfare and safety: The problem of snagging. Where space is tight (& even when it's not), there is a frequent tendency for operators to catch their hands and fingers resulting in an often minor injury, but an injury never the less. This can also result in contamination of the produce from bodily fluids.
- Secondly, there is the issue of hygiene. Jubilee clips do not create a hygienic seal between the hose and the hose tail. This causes a crevice to be left which can cause bacteria to get caught in the assembly. Even an intense CIP cleaning session can not guarantee the bacteria to be flushed out, resulting in potentially contaminating or damaging the product being created i.e. Beer.
What are the implications of using them in my processing operation?
- The main problems faced when using this method of fastening are; potential bug traps, the frequent need for re-tightening to reduce the occurrence of blow-outs (constant maintenance), product batch contamination, employee and consumer safety.
What other fastening methods are available to me?
- There are a number of ways to connect a hose to a fitting however when it comes to producing consumables in a hygienic environment we would only recommend one method: Swaging/Crimping. At Flextech we are specialists in hygienic crimping/swaging and are experts in hygienic hose design and so we know that this method of using interlocking ferrules and hygienic hose tails to offer a safe, leak free, tamper proof and low maintenance solution is the best option. The result is an even crimp over the complete length of the tail, no bug traps and a smoother exterior finish (Exterior cleanliness is just as important as interior) helping to create a hose more suitable for both contact zones and splash zones.