1.Water supply equipment with constant pressure

The equipment adopts the system static pressure as the initial design pressure head in the expansion tank. In the initial operation, the make-up water pump is first started to fill the water chamber in the system and the air pressure tank. After the system is full, the excess water is squeezed into the capsule. As the amount of water increases, the volume of the water chamber expands and compresses the gasbag, and the pressure inside the tank also increases. When it reaches the design pressure, the make-up water pump is turned off by the pressure controller. When the thermal expansion of the water in the system causes the system pressure to rise above the design pressure, excess water is discharged through the relief valve to the make-up water tank for circulation, when the volume of water in the system shrinks due to leakage or temperature drop, and the system pressure drops, the water in the capsule is continuously pressed into the pipe network to supplement the pressure drop loss of the system. When the system has a large amount of water to supplement, the make-up water pump is started.
The products are used for pressurized water supply in production, fire fighting, living system, heating and air conditioning system.

2.Recovery equipment for condensation water

Recovery equipment for condensed water is the key equipment of steam condensation water recovery system. It is widely used for steam boiler condensate recovery system in petrochemical, pharmaceutical, food, heating power, metallurgy, rubber, automobile and other industrial sector and hotels, hospitals, shopping malls, office buildings and other units, it is also suitable for civil steam heating and central air-conditioning refrigeration system. It is the replacement product of the open-type condensation water tank and plays an important role in reducing the waste of resources and environmental protection.

3.Water supply equipment for fire protection

The equipment is linked with the fire control center to automatically enter the fire fighting state in case of fire. And it is equipped with linkage feedback interface, the control of the fire pump can be started directly by power frequency, auto reduced-voltage start, star triangle reduced-voltage start and other ways to meet different use requirements. The fire control system has alarm and protection functions of overvoltage, undervoltage, overcurrent, short circuit, default phase, water shortage, etc. The main and standby pumps of the fire control system have mutual standby functions, and the main pump has mutual standby functions. The standby pump will be put into work automatically when the main pump fails.

4.Water supply facilities

Non-negative pressure water supply equipment is a kind of secondary pressurized water supply equipment that directly connects with municipal water supply network and provides pressure superposed water supply on the basis of residual pressure of municipal pipe network to ensure that the municipal pipe network pressure is not less than the set protection pressure (it can be 0 pressure of relative pressure, and it is called negative pressure when the pressure is less than 0).