Darley PuriFire® HP350

The hypochlorination unit can automatically treat from 2 to 350 gallons of water per minute. A range-adjusting valve is provided for establishing maximum accuracy of the unit within some portion of its operating range. At installation, the range-adjusting valve is positioned at its maximum setting of 350 GPM and then backed off, depending on chlorine demand and required chlorine residual. The hypochlorination unit is skid-mounted and portable. Three soldiers can place it into position. Quick-disconnect couplings are provided for installation in the threaded ports on the unit to enable hookup to the distribution point hose network. The unit is 33 by 30 by 31 inches and weighs 230 pounds.

The hypochlorinator unit provides automatic chlorination of the water before it is distributed. Automatic operation of the hypochlorination unit means that, during periods of changing flow, each gallon of water will receive the same amount of chlorine. This automatic operation is achieved by linking the operation of a water motor through a pilot valve to a hydraulically controlled hypochlorinator which regulates the amount of chlorine injected into the water passing through the unit. As the flow of water through the meter changes, the amount of chlorine injected into the water also changes. The hypochlorination unit incorporates a pressure regulating valve that maintains a pressure of at least 100 psi within the unit to ensure proper operation of the hypochlorinator.