Idex Pulsafeeder Pulsa 680, Инструкция по установке, эксплуатации и обслуживанию

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Figure A shows the preferred piping configuration for a good metering pump installation. A god piping
installation addresses present and future requirements of the metering system. Plan for shut off valves and
unions or flanges installed on both the suction and discharge lines. This allows inspection of the check valves
without draining long runs of pipe. Install a tee in the suction and discharge
piping between the pump and shut off valves. This permits easy installation of a calibration tube for
calibration of the pump at start up or any future date. A tee in the discharge piping is a must on a good
installation because it permits ease of mounting a pressure gauge to check discharge pressure at the pump
and setting the hydraulic bypass valve during start up and future maintenance functions. To prevent strain on
the pump fittings use pipe straps and braces. Do not allow the weight of the piping to be supported by a pipe
union, the valve fitting or other portion of the pump head or leaks will occur. An air leak at a union or other
fitting in the suction piping can severely affect metering accuracy and is extremely difficult to detect. In
assembly of piping, use pipe thread tape or a compound compatible with the product handled. If rigid piping
is used, we suggest bolting the pump to its foundation.
2.6 Strainers
Pump check valves are susceptible to dirt and other contaminates and any accumulation can cause
malfunction. Be sure to use a pipeline strainer in the suction line between the suction shut off valve and the
pump suction valve. 100 mesh screen is preferred.
2.7 Flush Piping System
Whether new or old piping is used, all lines should be flushed with a clean liquid or air before starting pump
to carry out pipe scale or other foreign material. Make sure flushing liquid is compatible with the chemical to
be pumped.