Sichuan Zigong Valve ZSH41F Axial Flow Check Valve Through-flow Type Check Valve

Before consulting or purchasing, users are requested to inform the accurate parameters such as caliber, pressure, connection method, operation method, main body material, etc. The above prices are reference prices, and prices for different models vary. At the same time, this product is a customized product with a production cycle, and the delivery time also varies. Therefore, for the specific model's price and delivery time, please call for consultation.

Axial Flow Check Valve Working Principle: The opening and closing of the valve disc are determined by the pressure difference between the inlet and outlet ends of the valve. When the pressure at the inlet end is greater than the sum of the outlet end pressure and the spring force, the valve disc opens. As long as there is a pressure difference, the valve disc remains open, but the degree of opening is determined by the magnitude of the pressure difference. When the sum of the outlet end pressure and the spring force is greater than the inlet end pressure difference, the valve disc closes and remains closed. Since the opening and closing of the valve disc are in a dynamic force balance system, the valve operates smoothly, without noise, thereby reducing water hammer phenomena.

If the fluid flow pressure cannot support the valve in a larger opening and maintain it in the open position, the valve disc and related moving parts may be in a state of continuous vibration. To avoid premature wear of moving parts, noise, vibration, or vibrating operation, the diameter of the check valve should be selected according to the fluid state.

Axial Flow Check Valve Features

1. Monolithic structure, lightweight, good rigidity, easy to maintain;
2. The spring thrust ensures that the valve disc remains in the closed position even without medium pressure;
3. The valve disc and seat can align regardless of the installation position, and the valve can be installed at any angle.
4. The streamlined design of the valve sleeve and the body cavity forms a streamlined flow passage for the axial flow check valve, ensuring that the flow area is sufficient and consistent, with low pressure loss and no cavitation. The valve disc returns to the seat under negative pressure generated by medium flow and spring thrust, without direct impact of the medium on the back of the valve disc; therefore, the axial flow check valve is a low-noise valve.
5. The support at both ends of the valve disc and the surface treatment of the valve disc shaft reduce the sticking phenomenon during the use of similar valves, ensuring smooth opening and closing; at the same time, it avoids the defect of poor alignment due to gravity, uneven force on the sealing pair, and inconsistent contact positions between two actions, which affects sealing performance, keeping the sealing pair always under force and in contact.
6. The spring thrust is slightly greater than the sum of the valve disc gravity and the friction between the valve disc and the front and rear supports when the valve disc is in the closed position. The valve disc can return to the seat for sealing at low pressure and any installation, while also achieving low-pressure opening, reducing pump start-up load, and protecting the smooth operation of the pump.

Axial Flow Check Valve Applications: Petroleum, chemical, metallurgy, power station fields, water, oil, gas, and various chemical corrosive media; gasoline and other media, low-temperature and cryogenic devices, vacuum systems, such as: submerged fire-fighting systems in storage tanks, LNG.

Supplier: Zigong Zipump Ball Valve Pump Co., Ltd. ZIPO VALVE & PUMP CO., LTD