The solution: An array of 85 compact Danfoss PAH 80 high-pressure pumps and other Danfoss components for both main and jockey systems
HeFei KDLian has extensive experience with the Danfoss range of high-pressure pumps and had used them in many projects before this. Thus, its engineers were confident in selecting the PAH pumps as the high-pressure fire-suppression system’s workhorse. In all, the new Hubei Provincial Archive uses 85 PAH 80 as both main pumps to provide misting pressure and jockey pumps to pressurize water from the water supply to the main pumps throughout the 60,000 m² structure.
“We know PAH pumps to be extremely reliable and very low maintenance,” says Jin, “with a service interval of 8,000 hours compared to 500 for other pumps. But they are also much more compact than competing three-piston pumps, which require four times as much valuable space as the Danfoss system.”
HeFei KDLian also chose to use Danfoss solenoid valves, check valves, and pressure relief valves. “Roughly half of all critical components in the archive’s water mist system are from Danfoss,” explains Jin. “This simplifies many things for the end user and for us. Fire suppression systems for such sensitive applications are strictly controlled by the government, and the testing and administrative work to fulfill compliance requirements is substantial. Having one proven supplier with an excellent quality control systems and track record, in China and abroad, significantly reduces the administrative workload.”
Jin notes that Danfoss PAH high-pressure pumps’ IATF 16949 certification also played an important role in the selection process. “IATF 16949 is a very stringent quality management system,” he says. “Its focus on preventing defects and establishing processes that drive continual improvement are vital when choosing pumps for an application as sensitive as this.”