Overfill prevention devices are extremely important for the safety of employees and individuals. These products are designed to protect the threads from being damaged during shipment and storage.

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    They also are very helpful by keeping contaminants from getting into the protected products. These caps are primarily used for propane tanks but there is also a standard valve cap for small cylinders. We have also increased safety--added a strap that attaches to the valve and warning labels printed in English and Spanish--to some of these parts. No matter what the situation is you can never be too careful and our reliable propane cylinder valve caps can help ensure this.