欧圣斯阀门有限公司

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Check Valves

止回阀

HC44X 橡胶瓣止回阀

The rubber flap check valve is mainly composed of a body, bonnet, and disc. The rubber flap is made of a steel plate as the pressure-bearing component and reinforced nylon fabric as the lining, with an outer layer formed by hot-vulcanized integral rubber coating technology. The disc operates flexibly without jamming and has a long service life. The valve features a streamlined design, offering low head loss, resistance to debris accumulation, and easy maintenance.

HH44X 低阻力缓闭止回阀

This valve is mainly installed at the outlets of booster water pumps for industrial circulating water supply and drainage, urban water supply and drainage, high-rise buildings, and hotels. It prevents water backflow and eliminates destructive water hammer, ensuring safe pipeline network operation. Designed to meet environmental requirements, it operates smoothly without vibration or noise, maintaining a quiet environment for hotels and residences while saving energy. For installation convenience

HH49X 微阻缓闭蝶式止回阀

This valve is mainly used in water supply and drainage pipelines such as high-rise buildings and fire protection systems. It is installed at the outlet of the water pump to cut off the back flow of the medium, eliminate destructive water hammer, and ensure the safe operation of the pipeline and water pump.

HH47X 微阻缓闭止回阀

This check valve is a new type of check valve installed on the outlet pipelines of booster water pumps in industrial circulating water supply and drainage, urban water supply and drainage, high-rise buildings, sewage discharge, and hotels. It is used to prevent medium backflow and eliminate destructive water hammer. The design fully considers the requirements of the application environment, achieving no vibration, no noise, stable operation, and long service life, ensuring a quiet environment in

HC41X 法兰消声快闭止回阀

This valve is mainly used in water supply and drainage pipelines such as high-rise buildings and fire protection systems. It is installed at the outlet of the water pump to cut off the backflow of the medium, eliminate destructive water hammer, and ensure the safe operation of the pipeline and water pump.

DH77X 对夹蝶式止回阀

The wafer check valve adopts a fluid design with low head loss. The internal spring can accelerate closing to achieve a silencing effect. Metal-to-metal contact ensures reliable sealing. It requires small installation space and can be installed at the pump outlet to avoid water hammer, water hammer noise and destructive impact, so as to prevent backflow and protect equipment. It is widely used in water supply and drainage, fire protection, construction, HVAC and industrial systems.

DH71X 对夹消声快闭止回阀

The DH71X wafer silencing quick closing check valve consists of a valve body, disc, spring, etc. It can be installed horizontally or vertically in the pipeline system to prevent medium backflow. It features a short structure, small size and light weight; the disc closes quickly with low water hammer pressure; the flow path is smooth with low fluid resistance; it operates sensitively and has good sealing performance. Product Performance Specifications Nominal Pressure Test Pressure - Strength Tes

HC42X 静音/轴流式止回阀

This product is designed by our company's engineering and technical personnel with reference to advanced similar products at home and abroad. The internal flow path adopts a streamlined design with guide vanes, which greatly reduces fluid resistance. This valve is mainly used at the pump outlet or other places to prevent medium backflow, which can effectively avoid the water hammer impact and noise caused by the backflow of medium in ordinary check valves, thus extending the service life. It ado

HD7412X 液控止回蝶阀

HQ41X 球型止回阀

This product is mainly used in water supply and drainage pipelines, installed at the outlet of the water pump to cut off water backflow, prevent the water pump from reversing, and ensure the normal and safe operation of the pipe network. It is an ideal check device to prevent the reverse flow of liquid in the pipeline.

LT942X 活塞式流量控制阀

This product is a new type of control valve that can adjust or control flow without any operational restrictions. Its unique design eliminates hydraulic energy and avoids the cavitation and vibration problems common in general control valves. The energy dissipation is achieved through a multi-orifice structure, where water is ejected from each nozzle and collides with each other. This design causes all ejected water columns to impact along the valve's centerline, completely dissipating their vel