Industrial Stainless Steel and Carbon Steel Vertical Check Valve

• Customization: Available
• Media: Water
• Temperature: Ordinary Temperature
• Model NO.: H42
• Material: Stainless Steel
• Connection Form: Flange
• Structure: Swing
• Pressure: Normal
• Function: Vertical
• Sealing Form: Soft
• Flow Direction: Unidirection
• Standard: GB
• Application: Industrial Usage, Water Industrial Usage, Household Usage
• Applying Mediem: Water Oil Gas
• MOQ: 1 PC
• Shipment Time: 15 Days
• Connection Ends: Flange
• Transport Package: Carton, Plywood Case
• Specification: 1/2"~12"
• Trademark: SAFETYSUS
• Origin: Wenzhou
• HS Code: 8481804090
• Production Capacity: 1000PCS/Week
• Package Size: 1.00cm * 1.00cm * 1.00cm
• Package Gross Weight: 2.000kg

Product Description

Industrial-grade Stainless Steel/Carbon Steel Flange vertical check valve

Product Description

Structure & Working Principle 
Design Features:  
  Lift-type design: The disc moves along the vertical centerline of the valve body, suitable for vertical installation.  
  Spring-assisted sealing: Ensures rapid response to pressure changes. Some models include reinforced springs for horizontal pipeline applications.  
 Operation:  
   Closed by default: The valve remains shut under no-flow conditions.  
   Forward flow: Inlet pressure overcomes spring force, lifting the disc to allow flow.  
   Reverse flow prevention: Spring and backpressure force the disc closed, blocking backflow.  


 Key Specifications 
Pressure Rating: PN16~PN40(150LB-300LB) 
Temperature Range:  
  - Carbon steel (WCB): ≤425°C (water, oil, steam).  
  - Stainless steel (304/316): ≤200°C (corrosive media).   

Materials & Standards
- Body Materials:  
  - Carbon steel (WCB), stainless steel (304/316)

Dimensions & Connection 
-Nominal Diameter (DN): DN15-DN350 
-Connection Type: Flange (RF/FF)

Applications
- Media: Water, steam, oils, weak acids (e.g., nitric acid), strong corrosives (e.g., acetic acid).  
- Industries:  
  - Oil & gas: Unidirectional flow control.  
  - Pharmaceutical: Prevents backflow contamination.  
  - Power plants: Boiler feedwater protection.  
  - Wastewater treatment: Pump discharge lines.  

 Installation & Maintenance  
- Installation: Vertical mounting required (gravity-assisted sealing). Ensure pipeline cleanliness.  
- Maintenance:  
  - Inspect springs and sealing surfaces periodically.  
  - Monitor thermal fatigue in high-temperature systems.  

 

Detailed Photos

 

 

Product Parameters

Working pressure	PN16~PN40 OR 150LB~300LB
Suitable medium	Water, gas, air and some corrosive liquid
Investment	Casting body and cap
Delivery time	Usual 15 days
Shipping port	NingBo,YiWu

 

Certifications

 

Company Profile

 

FAQ

Q:How do you pack?
A:Plastic bags-------(Paper boxes)-------Cartons-------Plywood cases

Q:How long is the quality guarantee period?
A:We supply 6 to 12 months for quality guarantee according to customers' using frequency.

Q:How can you guarantee the quality of products?
A: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 flange or fitting we sell is qualified.

Q:How can I check your factory situation while it's difficult for me to come to China.
A:We have photos and videos on our website, It shows every step of the manufacturing.
Alternatively, I can take videos or photos of our factory and send them to you.

Q:What is your lead time?
A:It's around 15 days normally. If we have the products in stock, it will be about 5days.

Q:Can you print our Logo on the valves/Fittings?
A:Yes, we can totally produce products according to your this kind special request, even manufacture it based on your drawing

Q:Are samples available to be sent with free?
A:It depends on what product you need. There are hundreds of products we sell. You can contact us for particular answer.

Q:Do you have a minimum quantity of the products?
A: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.

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

Q:Are you a factory or trading company?
A:We are a factory specialized in manufacturing flange and fitting over 10 years.