Product overview 

300X slow-closing check valve is an intelligent valve installed at the pump outlet of high-rise building water supply system and other water supply systems to prevent medium backflow, water hammer and water hammer. The valve has three functions of electric valve, check valve and water hammer eliminator, which can effectively improve the safety and reliability of the water supply system. It integrates the technical principles of slow opening, quick closing and slow closing to eliminate water hammer to prevent the occurrence of water hammer when the pump is opened and when the pump is stopped. Only need to operate the opening and closing button of the pump motor, the valve can be automatically opened and closed according to the operation rules of the pump.

300X slow-closing check valve consists of main valve, one-way valve, needle valve, ball valve, micro filter and pressure gauge to form a hydraulic control takeover system. Using hydraulic automatic operation, the opening or closing speed of the main valve can be obtained. The selection of 300X slow closing check valve can prevent the occurrence of water hammer, so as to achieve the effect of slow closing and silencing. The hydraulic control valve product uses hydraulic self-control, does not require other devices and energy, is easy to maintain, and has stable opening and slow closing. 300X slow-closing check valve series valve products are widely used in high-rise buildings, living areas and other water supply pipe network systems and urban water supply projects.

Scope of application

At present, hydraulic control valves are widely used in petrochemical, chemical, gas, natural gas, liquefied petroleum gas, HVAC and general industries.

Working principle

When the water is supplied from the inlet end, the water enters the main valve control room through the micro filter, needle valve and one-way valve, and then drains to the downstream through the ball valve. Because the opening of the needle valve is smaller than the opening of the ball valve, that is, the drainage speed of the main valve control room is greater than the water inlet speed, so the pressure in the control room decreases, and the inlet pressure acting on the lower end of the main valve disc opens the main valve to supply water downstream. When the pipeline stops supplying water, if the downstream water starts to flow back, part of the backflow water enters the main control room through the ball valve. Due to the action of the one-way valve, the backflow water cannot flow out from the main control room, causing the main control room to gradually increase the pressure and slowly close the main valve. 

Main external connection dimensions