Durable Check Valves in Stock by JQF Valve Supplier

As a professional check valve manufacturer in China, JQF Valve is a high-tech factory integrating valve research and development, production, sales and service. The high-quality check valves produced only allow the medium to flow in one direction and prevent flow in the opposite direction. The valve works automatically. Under the pressure of the fluid flowing in one direction, the valve disc opens. When the fluid flows in the opposite direction, the fluid pressure and the weight of the valve disc combine to act on the valve seat, thereby cutting off the flow.

Check valves are one of the key products of Guangdong Jinqiu Valve Technology Co., Ltd. They are mainly used to prevent backflow of pipeline media and protect critical equipment such as pumps and compressors from damage caused by backflow. They are widely used in industries such as petroleum, chemical, power, water treatment, and HVAC to ensure unidirectional fluid flow and improve the safety and stability of the system.

Features

1. High-efficiency backflow prevention, ensuring system safety: The check valve adopts an automatic opening and closing design based on media pressure. It automatically opens and closes when there is no backflow, preventing media backflow and avoiding water hammer effects and equipment damage. Suitable for various media such as liquids, gases, and steam, ensuring the safe operation of pipeline systems.

2. Low flow resistance, energy-efficient and high-performance: The check valve uses an optimized flow path design to reduce pressure loss and energy consumption, especially suitable for high-flow-rate conditions. Full-bore structures, such as wafer-type check valves, can further reduce flow resistance and improve conveying efficiency.

3. High pressure and corrosion resistance, adaptable to harsh environments: Valve body materials include WCB, CF8, CF8M, duplex steel, etc., offering excellent corrosion resistance. Suitable for harsh conditions such as seawater, acidic or alkaline media, the high-pressure design meets the high requirements of industries such as petroleum, chemical, and power plants.

4. Multiple structures, flexible adaptation to different needs: Swing check valves are suitable for horizontal or vertical pipelines. The valve disc swings open, used for high-flow-rate, low-velocity conditions.

Lift-type check valves are vertically installed, offer excellent sealing performance, and are suitable for high-pressure, small-diameter pipelines.

Double-disc check valves are compact, lightweight, and open and close quickly, reducing water hammer impact and making them suitable for pipeline systems with limited space.

Waist-type check valves are simple in structure, lightweight, and easy to install and maintain.

5. Long service life and low maintenance

The disc and seat adopt hardening treatment or metal + soft sealing structure, which is wearresistant and erosionresistant, and extends the service life.

It has no external drive components, low failure rate and low maintenance cost.

6. Silent design to reduce water hammer impact

Some models are equipped with buffer springs or damping devices to slow down the closing speed of the valve disc, effectively reducing water hammer effect and pipeline vibration, and are suitable for scenarios such as highrise building water supply and pumping stations.

Technical Specification

Typical applications

Oil & Gas: Protection of oil/gas pipelines and pump outlets.

Chemical & Pharmaceutical: Prevent the backflow of corrosive media.

Power industry: Boiler feed water system, condensate water recovery.

Water Treatment & HVAC: Pump outlets, central air conditioning circulation systems.

Municipal Engineering: Preventing backflow in water supply networks and drainage systems.