Overview of 1/2-4 Inch China Manufacture FXF PN20 Brass Vertical Spring 3/4 Lead Free Check Valve

1/2-4 Inch China Manufacture FXF PN20 Brass Vertical Spring 3/4 Lead Free Check Valve is engineered for superior performance in plumbing, industrial, and commercial applications. Made from lead-free, corrosion-resistant brass, these valves ensure long-lasting durability and reliable flow control for water, gas, oil, and other fluids.

With precision machining and robust construction, our brass valves provide smooth operation, excellent sealing, and resistance to high pressure—making them ideal for residential, commercial, and industrial piping systems.

Key Features of 1/2-4 Inch China Manufacture FXF PN20 Brass Vertical Spring 3/4 Lead Free Check Valve

Premium Brass Construction – Lead-free, corrosion-resistant, and durable

Leak-Proof Design – Tight seals for secure fluid control

High Pressure & Temperature Resistance – Reliable performance under demanding conditions

Smooth Operation – Easy-to-turn handles for precise flow adjustment

Versatile Applications – Compatible with water, gas, oil, and HVAC systems

Multiple Size & Connection Options – Available in ¼” to 2″ sizes (NPT, BSP threads)

(1/2-4 Inch China Manufacture FXF PN20 Brass Vertical Spring 3/4 Lead Free Check Valve)

Specification of 1/2-4 Inch China Manufacture FXF PN20 Brass Vertical Spring 3/4 Lead Free Check Valve

This China-made brass check valve quits water or various other liquids from streaming backward. It functions vertically. Dimensions are offered from 1/2 inch approximately 4 inches. The pressure score is PN20. This implies it manages pressures as much as 20 bar at space temperature level. The body is brass. This makes it strong and withstands rust. The springtime within is also brass. This spring helps the shutoff close fast. It quits backflow swiftly. The disc inside makes use of an unique style. It has a 3/4 inch diameter lead-free securing surface area. This meets regulations for risk-free alcohol consumption water. You get an excellent seal. This stops leaks. The shutoff works immediately. Liquid flows forward. It pushes the disc open versus the springtime. Flow quits or reverses. The springtime pushes the disc closed. Flow quits entirely. This shutoff requires little stress to open up. It works well in lots of systems. Install it up and down. The circulation instructions arrow should point the right way. It fits pipeline systems requiring dependable heartburn avoidance. Common uses include water pumps, central heating boiler feed lines, heater, and watering configurations. The simple springtime design is trustworthy. It needs little upkeep. The brass construction lasts long. It takes care of hot water and heavy steam temperature levels. This shutoff is a practical choice for numerous pipes work. It safeguards equipment from damage caused by reverse flow.

(1/2-4 Inch China Manufacture FXF PN20 Brass Vertical Spring 3/4 Lead Free Check Valve)

Applications of 1/2-4 Inch China Manufacture FXF PN20 Brass Vertical Spring 3/4 Lead Free Check Valve

This brass check shutoff quits water flowing in reverse. It uses a solid springtime inside. The shutoff body is brass. This makes it tough versus corrosion and wear. It fits pipe dimensions from half an inch approximately four inches. The PN20 ranking suggests it manages high water stress well. It mounts up and down. Gravity helps the springtime close the valve tight.

Use it in home plumbing systems. It protects pumps and hot water heater from damages. It quits warm water flowing back into cool water pipelines. Install it after the water meter. This stops city water from flowing back into your residence. It maintains water streaming just one direction.

This shutoff works well in heater too. Central heating boilers and radiators require constant flow instructions. This shutoff makes certain warm water steps appropriately. It stops cool backflow. This keeps heating efficient. It likewise protects central heating boiler components.

Factories make use of these shutoffs commonly. They control water flow in equipments and air conditioning lines. The brass takes care of various fluids securely. Its simple spring style seldom stops working. Maintenance is very easy. Workers can inspect it swiftly.

Farms and yards require dependable watering. This shutoff protects against filthy water from areas flowing back into tidy supply lines. It shields lawn sprinklers and drip systems. Animals can not consume polluted water. The lead-free brass is safe for drinking water systems. It fulfills rigorous health and wellness guidelines.

Its vertical springtime layout responds quick. Water stress opens it easily. If flow quits or reverses, the spring bangs it shut promptly. This protects against water hammer sound often. It protects pipelines from shock. The brass body lasts years. It deals with cold and hot water penalty. Select the ideal pipeline dimension for your job.

Packing and Shipment

Depends on the products and qty,we could make the packing of coiling,rolls,bundle packing,crates or boxes,etc.

Shipment:By sea,railway,by air or as customer’s request.

Company Profile

Luoyang Datang Energy Tech Co., Ltd. is a leading Chinese manufacturer specializing in high-quality plastic pipes and fittings. Equipped with state-of-the-art automated production lines and supported by a team of 200 professionals, we offer an extensive product line comprising over 150 types of plastic pipes and fittings designed for water supply and drainage systems, gas transmission, and floor heating systems. Our main products include PVC Pipes and Fittings, PE (HDPE) Pipes and Fittings, PPR Pipes and Fittings, and PEX Floor Heating Pipes. 

Should you have any inquiries regarding HDPE Pipe Fitting, please do not hesitate to contact us!

Tel.:0086-183 3790 0677

Wechat: 0086-183 3790 0677

Whatsapp: 0086-183 3790 0677

Email: sales@pipesandfittings.net

Payment Terms

T/T,L/C at sight,Western Union & Paypal,etc.

5 FAQs of 1/2-4 Inch China Manufacture FXF PN20 Brass Vertical Spring 3/4 Lead Free Check Valve

What is this check valve made from?
It uses lead-free brass. This meets safe drinking water rules. The brass resists corrosion well. It lasts a long time in water systems.

How much pressure can it handle?
This valve is rated PN20. That means it works up to 20 bar pressure. It’s strong enough for most home and building water lines. Don’t use it above this pressure.

Which way does it install?
It installs vertically. The arrow on the valve points the flow direction. Mounting it upright is crucial. It won’t work right sideways or upside down. Follow the arrow.

Will it work with hot water?
Yes. It handles hot water fine. The safe temperature range is -20°C to 120°C. It works in cold winters and hot water lines. Avoid extreme heat beyond this.

Does it need maintenance?
Generally, no. The spring and brass design is very reliable. Dirt or debris might cause problems. Clean the valve if flow seems blocked. It rarely needs replacing.

(1/2-4 Inch China Manufacture FXF PN20 Brass Vertical Spring 3/4 Lead Free Check Valve)