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b. The LDV shall be CBRN approved along with the SCBA. c. The LDV shall use the weazer's exhaled air to flushing any contaminates away from the outside surface of the diaphragm, keeping the diaphragm free from any contamination. d. The LDV shall utilize a quick disconnect coupling on the right shoulder that enables the LDV to be disconnected from the first stage. The quick disconnect shall not be capable of being accidentally disconnected. e. The mask-mounted regulator shall be automatically activated to the positive pressure mode by the user's first inhalation. It shall take no more than a negative pressure of 15-millibar (6 in/H20) to activate the positive pressure. f. The LDV shall have a bypass valve that can be operated in either a pulse flow or hands-free continuous flow mode. The minimum flow rate through the bypass valve shall be 80-130 liters per minute in the continuous flow mode. Hands-free continuous flow mode shall be achieved by a 90° turn. Two red dots or other suitable indicator shall be used to determine at a glance if bypass is on. g. The hose connecting the first stage regulator to the LDV shall be a small diameter, non- corrugated hose with a minimum pressure rating of 250 psi. This hose shall be routed over the right hand shoulder pad through loops such that the hose is close to the body. The hose shall have a swivel connection at the LDV. h. A buddy breathing connection assembly shall be available with quick disconnect fitting for emergency tie-in of LDV hose fitting from another SCBA. When required, the buddy breather shall also be useable as an airline connection. i. The LDV shall be capable of supplying in excess of 500/min of air at input pressures of 300 psi. j. The LDV shall maintain a positive pressure even at 150 psi and 3001/min. k. The LDV shall have a lifetime warranty 1. When attached to the facepiece, the LDV shall not begin the flow of air until the wearer inhales. 4. Integrated PASS/Electronic Gauge/Secondary Warning System a. The PASS shall be located over the shoulder of the SCBA and shall be automatically activated when the SCBA is pressurized. The activation pressure shall be greater than or _ equal to 60 psi. b. When the PASS is activated, a multiple frequency tone shall sound to indicate the PASS is operational. The integrated PASS cannot be turned off while the SCBA is pressurized. c. If the PASS detects no movement for a period of 20 - 23 seconds, the PASS will sound a 10- 13 second "pre-alarm". After the pre-alarm, if there has still been no movement detected by the PASS, the unit shall go into full alarm. d. The PASS alarm shall sound at a minimum of 95 dBA multiple frequency tone alarm and cannot be blocked off on any one surface. e. The PASS shall utilize a sensitive movement sensor to reduce the frequency of false alarms. f. The PASS shall have an alarm button easily accessible with a gloved hand. g. The PASS shall be capable of working even in the event the pressure signal cable is broken. h. The PASS shall be watertight and shall be intrinsically safe, in accordance with UL 913 in accordance with the NFPA 2007 edition standazds. i. The PASS shall be an approved part of the SCBA and meet the requirements of the current editions of NFPA-1981 and NFPA-1982 and 42 CFR, Part 84. 6