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API594 Check Valve-Dual Check Valve

API594 Check Valve-Dual Check Valve

Size: 1/2" - 60", (DN15 - DN1500)
Pressure: Class 150 - Class 2500, (PN16 - PN1200)
Working temperature: -196℃ - 560℃
Suitable medium: Water, Steam, Oil products, Nitric acid, Acetic acid
Body material: Carbon steel, Stainless steel, Alloy steel, Bronze
End Connection: BW, RF, RTJ
Product Details

Wafer Type Dual Plate Swing Check Valve


A check valve, reflux valve, or one-way valve is a valve that normally allows fluid (liquid or gas) to flow through it in only one direction.

Check valves are two-port valves, meaning they have two openings in the body, one for fluid to enter and the other for fluid to leave. There are various types of check valves used in a wide variety of applications. Check valves are often part of common household items. Although they are available in a wide range of sizes and costs, check valves generally are very small, simple, or inexpensive. Check valves work automatically and most are not controlled by a person or any external control; accordingly, most do not have any valve handle or stem. The bodies (external shells) of most check valves are made of plastic or metal.

Structural Feature

1. Long service life and good reliability;

2. Flexible action and good sealing performance;

3. Smooth flow passageway and small fluid resistance;

4. Applicable for and easily installed for vertical or horizontal pipelines;

5. Short structural length, only 1/4-1/8 of that of traditional flanged check valve;

6. Low volume, light weight, only 1/4-1/20 of those of traditional flanged check valve.


1 Are you a factory or trading company?
We are a factory specialized in manufacturing valves about 20 years.

2 Where are the main markets for your products?
We hope to make business with companies from all over the world. And for now, our valves and fittings have been exported to especially in North America, South America, South Asia, Europe and Middle East.

3 Do you have a minimum quantity of the products?
No, we will build business with you with even 1pc. We believe this cooperation will be a long-term relationship for our high quality, competitive price and good after-sale service.

4 Can you print our Logo on the valves?
Yes, we can totally produce products according to your special request.

5 What is your lead time?
It's around 25-45 days normally. 

6 How can I check your factory situation while it's difficult for me to come to China?
We have photos and videos on our website , It shows every step of the manufacturing.

7 How can you guarantee the quality of products?
First of all, we have the numerical control device to manufacture products accurately. Then our quality inspectors will test products one by one to make sure every valve  we sell is qualified.

8 How long is the quality guarantee period?
We supply 18 months for quality guarantee according to customers' using frequency.

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