Product introduction
Constant pressure water inlet device (NZG series capsule type automatic water supply device) has been widely used in residential, office of scientific research, hotels, hospitals, cinemas and other civil buildings and facilities of industrial and mining enterprises for production and fire water supply system.

NZP series is widely used for hot water supply, heating, hot water village and  land expansion tank in the central heating and air conditioning system.

application；

1. The life,fire fighting and production of industrial and civil building,hot water supply,hot water heating,,and voltage stablization and feed-water of air conditioning system. 

2. Water hammer noise elimination equipment for high buildings.

3. Fountain, forest farms, or agricultural irrigation system for tourist facilities and tourist attractions

4. Used in production, living, fire control system.

5. The ideal equipment of rural water,allso can be used as building construction, mobile operation of the temporary water supply equipment

Feature:

1.  Non-toxic rubber capsule in the tanks, water quality protcted from  pollution from outside world, putting an end to oxygen corrosion phenomena

2. Good sealing performance, an air flushing can be use for a long time

3. Automatic eliminate water hammer and the noise from the network.

4.  It can replace high water tank and water tower, and it is beneficial to structural seismic and beautiful buildings.

5. Cover an area of an area small, less investment, quick installation, convenient operation and maintenance.

6. Can set the system pressure according to the requirements of customers.

working principle 

Now the NZP series console expansion tank as an example to show how it works.NZP series equipment by air pressure tank, constant pressure filling water tank, electric control cabinet, pressure controller, safety valve, pressure gauge, valves and piping etc of a complete automatic constant pressure water inlet device.Air pressure tank is composed of internal and external two rooms, chamber rubber capsule (internal) as the water chamber.Outside the room (rubber capsule and equipment between shell) is filled with nitrogen gas chamber.
The equipment adopts the system static pressure as the expansion tank in the design of the initial pressure head P1, the guarantee system of the pressure of hot water doesn't boil expansion tank running within the terminal pressure head P2.The initial run time on pump into the system and the air pressure inside the tank water chamber with water, after system full of excess water is squeezed into a capsule.Because the incompressibility of water, as the water continues to increase, the volume of water chamber has been expanded and compressed air chamber, the pressure of the tank has been increased.When the pressure to meet the design, with a pump shut down pressure controller.When the thermal expansion of the water in the system make the system pressure exceeds design pressure, excess water recycling, through the relief valve discharge to fill the tank, when the water in the system due to leakage or temperature drop and shrinkage, fall, system pressure, the water in the capsules have been pressed into network complement system pressure drop loss, when the system pressure drop to the minimum pressure, design allows through pressure controller to pipe network and pump restart pressure tank filling water, so the cycle of work, completed the high expansion tank that play the role of the phenomenon, at the same time there is no vacuum or water to ensure that the water flow rate, pressure never disorder.Example: tank diameter of 1600 mm, number 1 of tank, pump suction diameter of 50 mm, number of water pump is 2, the water pump series for level 3 capsule type expansion tank is expressed as landing NZP1.6 1-50 X 2 X 3 X.

instructions

1. Equipment used in well ventilated environment, voltage fluctuation should not exceed 5%.

2. Equipment operation a year ago, use manual switch to check the water pump motor, electric control pressure working performance of the controller, and then in the case of closed water supply valve check automatic filling water, drainage, drainage and pressure protection, inspection qualified rear can open the water inlet valve, become an organic whole repeatedly with the heating system, the state of normal operation.

3. Check once a year the pump, valve and pressure controller, and regular inspection system in sealing, prevent leakage and corrosion.Ordering instructions when placing order, shall specify the design maximum working pressure and minimum pressure of water supply.

4. That is life water, production water, fire water or heating water

5. If users have special requirements, our company can supply according to the requirements of customers, such as special specifications, material of tanks, pumps, etc.)