OPW 66V-0300 breakaway. Pull force less than 300 lbs. Certainty of operation - designed to be replaced after separation, instead of reassembled, to protect against reassembly errors. Unique double-poppet design - features low pressure drop. Low pressure drop - the integral check valve design allows for minimal pressure drop for faster, high-volume fill-ups. Listed by Underwriters Laboratories, Inc. - Visit our website at: www.opw-fc.com for specific listings. Design Working Pressure - OPW products are designed to work at 50 PSI (3.45 bar) maximum pressure.