Edj 250gpm 500gpm 750gpm Electric Diesel Driven Fire Fighting Water Pump

Purity Pump Co., Ltd. is committed to the research and development and production of reliable engineering pumps. Purity currently has more than 350 employees and a factory area of 60000 square meters. It produces six major series of products including fire pump system, centrifugal pumps,  pipeline pumps, sewage pumps, selfpriming pumps, and water supply systems. The products are exported to more than 120 countries and regions around the world and have international certifications such as UL, CE, ISO system, and SASO.

Short Description:
* Fire pumps are designed for whole operational life, the maximum reliability is always the first priority
* The components affixed onto a steel framing structure
* Each controller has its own individual pressure sensing line
* The suction line should never include a strainer 
* Check valve and butterfly valve in the discharge line
* NFPA 20 not allows suction from negative level for end suction and split case pumps

Principle:
When pressure drops below the set value, jockey starts running with the signal from the pressure switch and continues running for 10 minutes till the system pressure reaches the set value. If the pressure continues drop, first the main pump starts to run. If the system pressure can not supply and pressure continues drop, the standby pump starts to run.