Hartford Steam Boiler Inspection and Insurance Company · Hartford, Ct. : Hartford Steam Boiler Inspection and Insurance Co · leaf 253
ctrical relay which starts and stops the motor auto-matically at certain pressure limits. Figure 2 shows the damage causedrecently by the explosion of a tank in such a system at a hotel. Thissystem had no safety valve, the relay being depended on to preventover-pressure by shutting down the pump.… … T HE LOCO MOT! V E -i | Automatic controls for the pump should not be depended on asthe only protection against over-pressure. In all crises they should beaugmented by a relief valve installed either on the tank or on a pipefreely communicating to the tank. Where the relief valve is on some
Locomotives · Steam-boiler explosions
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