Summary

RW type automatic pressure stabilizing water replenishing device is designed and developed for automatic water replenishing and maintaining system pressure in heating, heating, central air conditioning and other systems. It is composed of diaphragm pressure tank, water pump, control box, underframe, pressure sensing device, pipeline, valve, etc. it can be widely used in the above systems of high-rise buildings, residential water supply, industrial and mining enterprises. RW type automatic pressure stabilizing water replenishing device is in accordance with the national enterprise standard Q / rw-2000-001.

main features

Good sealing performance, once inflation, can be used all year round

Installation site is not limited by height

Flexible configuration, quick combination and installation, simple and compact device, small floor area

Due to the separation of water and gas, the water quality is guaranteed to be pollution-free in the fully closed state

It can effectively eliminate most water hammer and pipeline noise

Scope of application

Replace expansion water tank in heating and central air conditioning system and have the function of automatic water supplement

working principle

The device is used for heating and central air conditioning.

According to the process design, the gas chamber is filled with the nitrogen required by the preloading, and the device is connected with the system. After installation, open the valve between the device and the system. (the valve shall be equipped with a locking device, which shall not be closed during normal operation.) when the volume of water expands or contracts due to the change of water temperature of the system, the diaphragm tank shall be responsible for suction or discharge by itself, so as to stabilize the system pressure in the area of the upper and lower limits of the preset pressure. If the pressure of the system drops to the lower limit of the preset pressure due to water leakage or other reasons, the electric contact pressure relay will start the stabilized pressure pump to supply water to the system until the pressure reaches the upper limit of the set pressure. If the system pressure exceeds the set maximum pressure value, the safety valve will discharge water to the soft water tank or trench to reduce the pressure, so repeatedly, to maintain the pressure balance of the system

。

For example:

RW1000 / 2-0.6 × 2 is two 1000 liter effective volume vertical diaphragm pressure tanks and two water pumps. The maximum allowable pressure of the system is not more than 0.6MPa, so the corresponding water pump model can be basically determined. The model of the water pump can be specified by the user, and the vertical type is appropriate. If the user does not specify, the equipment is equipped with CDL type water pump.

The model of diaphragm tank listed in this sample is made in China, or German diaphragm tank can be selected. For detailed specifications, please contact us.

Process flow chart of heating and central air conditioning

	Electrical control box There are two types: wall mounted type and floor mounted type. The user shall explain when signing the contract. The floor mounted type is connected to the device base, while the wall mounted type is installed separately from the device.
	Boundary dimension Wall mounted floor type ≤11KW　400×300×210≤11KW　600×400×250＞11KW　1000×760×300＞11KW　1400×600×400

External dimension of diaphragm tank

Single tank single pump

Note: there are many options for the system pressure of this gauge, but the working pressure of diaphragm tank is 0.3MPa, 0.6MPa, 1.0MPa, and 1.6Mpa. If water make-up system with working pressure greater than 1.6Mpa is required, please contact our technical department.

　　Single tank double pump

Note: two water pumps are one for use and one for standby.

　　Double tank single pump