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3509.5 Identification of manifolds.
Signs shall be posted for oxygen manifolds with service pressures not exceeding 250 psig (1379 kPa). Such signs shall read as follows:
LOW-PRESSURE MANIFOLD
DO NOT CONNECT HIGH-PRESSURE CONTAINERS
MAXIMUM PRESSURE 250 PSIG
DO NOT CONNECT HIGH-PRESSURE CONTAINERS
MAXIMUM PRESSURE 250 PSIG
3509.6 Clamps.
Hose connections shall be clamped or otherwise securely fastened.
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