Stainless Steel H71 Wafer Check Valve

• Customization: Available
• Media: Water
• Temperature: Ordinary Temperature
• Model NO.: H71
• Material: Stainless Steel
• Connection Form: Wafer
• Structure: Swing
• Pressure: Normal
• Function: Wafer
• 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: Wafer
• Transport Package: Plywood Case
• Specification: 1/2"~24"
• Trademark: SAFETYSUS
• Origin: Wenzhou
• HS Code: 8481804090
• Production Capacity: 1000PCS/Week
• Package Size: 20.00cm * 30.00cm * 20.00cm
• Package Gross Weight: 1.000kg

Product Description

Stainless Steel/Carbon Steel H71 Wafer-Type Check Valve

Product Description

Product Overview 
 The H71 Wafer Check Valve features a compact wafer connection design, with a structural length only 1/4 to 1/8 of traditional flange check valves. It offers significant reductions in size and weight (weighing just 1/4 to 1/20 of conventional valves). Key advantages include rapid closure to mitigate water hammer effects, low fluid resistance, and adaptability to both horizontal and vertical pipelines. Compared to H41 flange check valves, the H71 type resolves issues of bulkiness and installation/maintenance challenges inherent in traditional designs.

Structural Features
- Fast Closure: Spring-loaded disc achieves short-stroke closure, dramatically reducing water hammer pressure in high-flow scenarios.  
- Sealing Performance: Single-disc vertical movement with spring-assisted sealing ensures zero leakage and extended service life.  
- Material Versatility: Components (body, disc, etc.) available in carbon steel, stainless steel (304/316/316L), duplex steel, etc., adaptable to diverse media requirements.  

Application Range
- Media Compatibility: Suitable for water, steam, oil, nitric acid, acetic acid, strongly oxidative media, and urea. Material selection extends compatibility to corrosive environments.  
- Operating Parameters:  
  - Pressure Rating: PN10-PN420 (Class150-Class2500)  
  - Size Range: DN15-DN600
  - Temperature Range: -196°C to 540°C  
- Industry Applications: Widely used in petrochemical, power generation, metallurgy, food processing, environmental protection, and municipal pipeline systems.  

Technical Standards 
- Design & Manufacturing: Compliant with JB/T 8937, API 594, etc.  
- Flange Connections: Supports GB/T 9113, ASME B16.5, and other international standards.  
- Testing & Certification: Meets API 598, GB/T 13927 test protocols. Select manufacturers hold ISO 9001, API 6D, and other quality certifications.  

Installation & Maintenance 
- Flow Direction: Align medium flow with body arrow markings; compatible with horizontal/vertical mounting.  
- Support Requirements: Large valves require independent supports to prevent pipeline stress from compromising sealing integrity.  

Performance Parameters
- Flow Resistance Coefficient: Decreases with increasing diameter (e.g., DN50: 2.6; DN1200: 0.7).  
- Flow Capacity: DN100 valve demonstrates Kv=289 m³/h (Cv=338 per US standards), indicating high throughput efficiency.  

Material Configuration 
- Standard Options:  
  - Body: WCB, 304/316 stainless steel  
  - Disc & Spring: Stainless steel/alloy steel  
  - Sealing Surface: Rubber or hard-faced alloy overlay  

  The H71 Wafer Check Valve delivers exceptional efficiency, reliability, and adaptability for industrial pipeline systems. Final selection should consider media properties, pressure/temperature conditions, and installation environment. Consult manufacturer datasheets or technical services for project-specific specifications.  

Product Parameters

Pressure Rating	PN10~PN40 (or Class 150~300)
Nominal Diameter	DN50~DN600 (2"~24")
Temperature Range:	Stainless Steel: -29ºC~200ºC (rubber seal) / 425ºC (metal seal)
	Carbon Steel: -29ºC~425ºC
Connection Standards	GB, ANSI, DIN, JIS wafer flange dimensions.

 

Detailed Photos

 

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.