Check Valve is applicable for various pipelines with nominal pressure of PN1.0MPa-42.0 MPa, Class150~2500 and nominal diameter of DN15-1200mm, NPS1/2-48 and working temperature of -196-540℃ to be used for protecting from medium back flowing. The different materials selection can apply to the medium involving water, steam, oils, nitric acid, strong oxidizing medium and urea etc.
1/2" - 32"
(DN15 - DN800)
Class 150 - 1500
(PN16 - PN150)
-196℃ - +560℃
Water, Steam, Oil products, Nitric acid, Acetic acid
Carbon steel, Stainless steel, Alloy steel, Bronze
Standards and Specifications:
1. Design and Manufacture：API 6D
2. Inspection and Test：API598, API600/API 6D
3. Face to Face and End to End：ASME B16.10
4. Pressure-temperature ratings：ASME B16.34
5. Wall Thickness Dimension：API 600, BS 1868
6. End Flange Dimension：ASME B16.5 (for NPS≤24, API 605)
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.
Zhejiang Naibang Valve CO., LTD, Founded in 2000, is a professional valve manufacturer integrating design, technical development, produce and sale service, has a solid strength and rich production experience.
The main product are wafer check valves, ball valves, gate valves, globe valves, forged steel valves, and have obtained ISO9001 , API 6D , CE Certificate and TS management system certifications.