I. Overview XBD-HY series constant pressure pump fire is developed for multi-storey, high-rise building fire water supply and living new products, is highly reliable, high-quality fire pump. The product fully in line with national standards GB6245-1998 "fire pump performance requirements and test methods" and to meet the current fire safety norms, performance is a leading domestic level. Second, the model significance XBD6 / 30-HY XBD --- fire pump constant pressure pump 6 ----- rated pressure 0.6MPa 30 ---- rated flow 30L / s HY ---- constant pressure pump code Third, the performance Range of flow: 10L / s ~ 80L / s Rated pressure: 0.3MPa ~ 1.5MPa Pump inlet diameter: 65 ~ 150mm Fourth, the product features flow regulator, flow - lift curve is flat, the pressure fluctuations in the work area does not exceed 5 %. Small flow does not overpressure, to ensure the safety of firefighting equipment and firefighters, large flow of pressure to ensure that the fire efficiency. Anytime, can start reliably. Open impeller, no cover, no mouth ring, no biting dead. Small system investment, no pressure tank, inverter and other large, expensive equipment; control is simple, reliable performance; small size, light weight, small footprint. High speed, compact structure; small vibration, low noise, direct coaxial pump; machine seal reliable, high-quality mechanical seal to create a clean operating environment; high quality bearings, heavy load design; Modular design, versatility, spare parts and spare parts. Fifth, use XBD-HY (W) series of fire pump is mainly used for permanent fire protection systems (fire hydrant fire extinguishing system, automatic sprinkler system and water spray fire extinguishing system, etc.) for industrial and civil buildings, especially for high-rise buildings Fire water supply system, the other can also be used for fire and life (production) shared water supply system and construction, municipal, mining, boiler feed water and other occasions.