Series 7139 is a flexible air hose incorporated in pneumatic closed-circuit control systems to prevent fuel spills during aircraft fueling operations. The hose is connected to air-actuated shut-off valves that are controlled by the aircraft fueling operator at all times during fueling operations. Series 7139 hose lines are chemically bonded to prevent separation and maximize flexibility, and the distinctive red/green covers provide color-coded identification. The hose features a nitrile tube that is resistant to oil and a chloroprene cover that is resistant to oil and weathering.
Part Number | Hose I.D. | Reinf Plies | Hose O.D. | Approx Weight |
Min Bend Rad | Max Rec WP | Perm Cplg Rec | Max Lg | |||||
---|---|---|---|---|---|---|---|---|---|---|---|---|---|
# | inch | mm | in | mm | lbs/ft | kg/ft | in | mm | psi | bar | ft | ||
7139-251 | 1/4 | 6.4 | 2 | 0.531 | 13.5 | 0.19 | 0.09 | 2.0 | 50.8 | 200 | 13.8 | * | 800 |
Performance Characteristics | |
---|---|
Tube | Black nitrile |
Reinforcement | Multiple textile plies |
Cover | Red and green chloroprene; smooth finish |
Temp. Range | -30°F to +200°F (-34°C to +93°C) |
Brand Method | White ink on red hose |
Brand Example | PARKER SERIES 7139 DEADMAN TWIN HOSE 1/4 ID 200 PSI MAX WP MADE IN USA (DATE CODE) |
Design Factor | 4:1 |
Industry Standards | None applicable |
Applications | Air hose incorporated in pneumatic closed-circuit control systems associated with aircraft fueling operations |
Vacuum | Not rated |
Compare to | Carter 64406; Veyance Deadman Aircraft Refueling |
Packaging | Reels |