China Check Valve Manufacturers, Suppliers and Factory - Made in China

Your Professional Check Valve Supplier

Yantai Jinhai Precision Instrument Co., Ltd. is located in the beautiful coastal city of Yantai. We welcome all customers and friends to come and visit us. We are a technology company integrating automation control systems, manufacturing, sales, and service. We specialize in the research and development of water valves and ball valves. , butterfly valves, safety valves, etc., are widely used in petroleum, chemical industry, medicine, fire protection and water treatment engineering, etc. The high-quality products and services are loved by customers at home and abroad, and are exported to Europe, America, the Middle East and Southeast Asia markets.

Silent Check Valve
Silent Check Valve
Silencer Check Valve
Silencer Check Valve
API Swing Check Valve
API Swing Check Valve
Lift Check Valve
High pressure flange check valve
High Pressure Flange Check Valve
High pressure flange check valve
Globe Check Valve
globe check valve
Multifunctional Check Valve
Multifunctional check valve
Grade 125 Cast Iron Check Valve
Grade 125 Cast Iron Check Valve
Flange End Silent Check Valve
Flange End Silent Check Valve
Jis Cast Iron 5k Check Valve
JIS Cast Iron 5K Check Valve
Din Pn16 Thread Ball Check Valve with Flange End
DIN PN16 Thread Ball Check Valve With
Pn16 Cast Iron Air Cushion Swing Check Valve
PN16 Cast Iron Air Cushion Swing Check

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Why choose us

Our Certificates

The company complies with American MSS SP-70, MSS SP-71, MSS SP-85, AWWA C509 standards, Japanese JISB2043 standards, German DIN3352 standards, and British BS 5163 standards,European Union EN1902.

Sales Market

Products are exported to more than 20 countries and regions including the United States, Canada, Western Europe, the Middle East and Southeast Asia. And cooperate with well-known domestic enterprises.

Solution

We have a rich technical team, and we can customize suitable solutions specifically for you.

Technical Support

At Jinhai Company, we provide the highest quality water valve installation solutions.

Check Valves

Yantai Jinhai Precision Instrument Co., Ltd. manufactures a wide selection of check valves to address many diverse application requirements

Yantai Jinhai Precision Instrument Co., Ltd. check valve products are offered in several series ranging from ultra-low cracking pressures widely used in medical devices, products optimized for cryogenic applications and severe service designs with MAWPs up to 10,000 PSI. Available in fixed via spring and adjustable crack pressure models, a variety of materials of construction, sizes and porting configurations, Yantai Jinhai Precision Instrument Co., Ltd. check valves provide viable product solutions for the most demanding applications.

Manufacture A Wide Range Of Check Valves To Suit A Variety Of Application Requirements

High Pressure Check Valve (HPCV)

Design: Severe Service, High Pressure, Poppet Type Check Valve

Size: 1/4” to 1/2”

Configurations: Male and Female NPT

Materials of Construction: Brass and Stainless Steels up to 10,000 Psi MAWP

Many standard Seal Materials and Crack Pressures

Available Cleaned for Oxygen Service

Adjustable Check Valve (ACV)

Design: Adjustable Crack Pressure, One Piece Body, Poppet Type Check Valve.

Field Adjustable and/or Supplied Factory Preset.

Size: 1/4” and 1/2”.

Configurations: Male NPT and Female NPT.

Materials of Construction: Brass and Stainless Steel up to 3,000 Psi MAWP.

Many standard seal materials.

Available Cleaned for Oxygen Service

Pn16 Cast Iron Air Cushion Swing Check Valve

Poppet Check Valve (PCV)

Design: Compact, Poppet Type, Instrumentation Check Valve.

Size: 1/8” to 1/2”.

Configurations: Male NPT, Female NPT and BI-Lok Dual Ferrule Tube Connection.

Materials of Construction: Brass and Stainless Steel up to 3,000 Psi MAWP.

Many standard seal materials and crack pressures.

Available Cleaned for Oxygen Service.

Disc Check Valve (DCV)

Design: Quick Acting, Low Pressure, Floating Disc Type Check Valve

Crack Pressure less then 1” H2O

Size: 1/4” and 3/8”

Configurations: Female by Female NPT

Materials of Construction: Brass and up to 500 Psi MAWP

Many standard Seal Materials

Available Cleaned for Oxygen Service

Inline Check Valve (ICV)

Design: Compact, Economical, Low to Medium Pressure, Poppet Type Check Valve

Size: 1/4” to 3/4”

Configurations: Male and Female NPT

Materials of Construction: Brass and Stainless Steel up to 800 Psi MAWP

Many standard seal materials and Crack Pressures

Available Cleaned for Oxygen Service

Check Valve (CV)

Design: High Flow, Poppet Type Check Valve.

Size: 1/8” to 2”.

Configuration: Female by Female.

Materials of Construction: Brass to 3,000 Psi, Stainless to 4,500 Psi MAWP.

Many standard seal materials and crack pressures.

Cryogenic Liquid Service.

Available Cleaned for Oxygen Service and for use in Cryogenic Systems.

One Piece Check Valve (OPC)

Design: Compact, Economical One Piece Body, Poppet Type Check Valve.

Size: 1/4” and 1/2”.

Configurations: Male NPT and Female NPT.

Materials of Construction: Brass and Stainless Steel up to 3,000 Psi MAWP.

Many standard seal materials and crack pressures.

Available Cleaned for Oxygen Service.

Check Valve Materials and Advantages

316 Stainless Steel —The most popular material for check valves based on volume, stainless steel is a corrosion-resistant material, so it stays fairly rust free in applications like water, moist air, and steam. It is a relatively low-cost material in relation to its corrosion-resistant properties.

Carbon Steel – Carbon Steel is a lower cost material that is easier to machine. Overall, expenses can be reduced by using carbon steel, however, it doesn’t have the same corrosion-resistant properties as stainless steel. If the application is in a dry environment, such as dry gas or a hydraulic liquid that doesn’t have water in it, then carbon steel is effective and there is no need to pay extra for stainless.

Brass – In many applications, brass falls somewhere between carbon and stainless steel when it comes to corrosion resistance and price. Brass has some additional corrosion-resistant properties over carbon steel and it is easier to machine than stainless steel. Brass is used often in water and drinking water applications.

Monel – Monel is a group of nickel alloys and considered a super alloy. Its biggest advantage its really high corrosion resistance. Monel is specifically known to be effective in saline, salt, or seawater environments. Each super alloy has different chemical resistant properties. Some do well in one environment where others may do well in a different environment.

Alloy 20 – Alloy 20 is an austenitic alloy that many consider to be a hybrid between stainless and other super alloys. It’s typically not as expensive as a many super alloys, but it’s more highly corrosion resistant than a traditional stainless steel in certain applications.

Alloy c-276 – Alloy c-276 is a solid solution strengthened nickel-molybdenum-chromium alloy with a small amount of tungsten. It exhibits excellent corrosion resistance in a variety of harsh environments and media. Like other nickel alloys, it is ductile, easily formed and welded. It is used in most industrial settings where aggressive chemical environments are present and other alloys have failed.

Titanium – Titanium is an alloy that is used in very high temperatures.

Inconel – Inconel is an austenitic nickel-chromium-based super alloy. It is an oxidation corrosion-resistant material well suited for extreme environments subjected to pressure and heat. This can often be used when customers want something similar to stainless.

Check Valve Working Pressure

Check valves have distinct working pressures. The difference usually lies in their types and different check valve manufacturers. Here are some standard ratings generally found in specific industries.

● Oil, Gas, and Water Applications

● Cold Pressure Working

● Pressure Nominal (PN)

They usually have a nominal pressure rating at room temperature.

These valves have working pressure between -20F to 100F.

These are standard ratings offered by some check valve manufacturers.

Check Valve Applications

Potable Water Systems:

The residential check valve applications involve carrying potable water. These valves maintain the integrity of drinking water. They keep water separate from other streams and prevent contamination and backflow. The installation of check valves in such conditions not only keeps the water safe to drink but also effectively regulates its flow.

Water Pumps:

Water pumps undergo frequent pressure changes. That’s why they are prone to hammering effects and blockages. Check valves in these pumps relieve these hazards by regulating pressure and preventing backflow. They keep water moving until the air expels from the pump, which otherwise cannot be done by the pump itself.

HVAC Systems:

HVAC systems in homes or residential buildings are among the top applications of check valves. They require a coolant to be pumped up at height. Check valves are significant in bringing it by resisting the force of gravity. They also ensure that no fluid mixes up with another stream or back-flows to the primary system.

Irrigation Systems:

Brass check valves in irrigation systems perform significant functions. As irrigation involves water dispersal into many streams, check valves suit the system’s needs. They take water to the desired destination along with a safety mechanism. They ensure backflow prevention to the main supply and stop contamination from damaging the equipment or water quality.

Liquid Fuel Systems:

Liquid fuels include hydraulic, synthetic, jet, and compressed air. Check valves in these systems have a unique design that provides stable operation from opening to allowing maximum flow. The function of backflow prevention is of substantial importance. If not checked, the backflow can lead to system failure and pose a personal threat.

Certificate

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FAQ

Q: Are you a Factory or Trading?

A: We’re a factory with 17 years production experience, OEM for some customers around the world.

Q: What is your After-sales service term?

A: 18 months for all our products.

Q: Can I request to change the form of packaging and transportation?

A: Yes, We can change the form of the packaging and transportation according to your request, but you have to bear their own costs incurred during this period and the spreads.

Q: Can I request fast delivery?

A: Yes, if we have stocks.

Q: Can I have my own Logo on the product?

A: Yes, you can send us your logo drawing, we’ll put it on the valve.

Q: Do you accept custom design on size?

A: Yes.

We're well-known as one of the leading check valve manufacturers and suppliers in China. If you're going to buy high quality check valve made in China, welcome to get more information from our factory.

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