The requirement for making or labeling the siphon tube has been deleted from NFPA 10. The collar serves as the indication that the fire extinguisher has been disassembled and the siphon tube was removed from the cylinder. This would include whenever a six-year maintenance, recharge or hydrotest is performed. Also, liquefied gas, halogenated agent, and carbon dioxide extinguishers that have been recharged without the valve being removed do not need the collar replaced. Nothing can prevent unscrupulous individuals from committing fraud but, the collar is a way of ensuring that the valve and siphon tube were removed when six-year internal maintenance was performed.
Pricing includes the cost of shipping on all prepaid orders.
Copyright 1997, National Association of Fire Equipment Distributors Permission is granted to create WWW pointers to this document. All other rights reserved.