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China Suppliers Factory Stainless Steel Wafer Dual Disc Check Valve AWWA C594 for Optimal Backflow Prevention
| Valve Type: | Wafer check valve | Structure: | Double disc |
| Standard: | AWWA C594 | Workmanship: | Investment casting |
| Sealing Direction: | Single-directional | Sealing Grade: | Zero leakage |
| Temperature: | -40°C < T < 800°C | Operation: | Self-starting |
🔩 Characteristics
This wafer check valve is mainly composed of stainless steel valve body, stainless steel valve disc, elastic sealing valve seat, shaft, reset torsion spring and other components.
✅ Advantages
1. Super Strong Corrosion Resistance — Suitable for Multi-Medium Working Conditions
Stainless steel (such as 304, 316, 316L) will form a dense chromium oxide protective film on its surface, which can effectively resist the corrosion of weak acids, weak bases, salt solutions, seawater, and humid environments. Compared with cast iron and cast steel materials, it can avoid problems such as rusting, corrosion, and perforation of the valve body. Especially suitable for pipeline systems transporting corrosive or saline media in chemical, seawater desalination, food and pharmaceutical industries.
2. Excellent Hygiene Performance — Meeting the Needs of Clean Fluids
Stainless steel material has a high surface finish, no pores, no adsorption of impurities, and is not easy to breed bacteria. It can be directly used in working conditions such as drinking water, food and beverage, pharmaceutical preparations, etc. that require strict cleanliness of the medium. It meets hygiene standards and solves the pain point of corrosion and pollution that cast iron valves are prone to.
3. High Mechanical Strength — Anti-Wear and Impact Resistance
The tensile strength and yield strength of stainless steel are much better than cast iron, and it can withstand long-term erosion from high-pressure and high flow media, as well as pressure impact during pipeline start-up and shutdown, reducing wear and deformation of valve discs and bodies, extending the service life of valves, and reducing maintenance costs for frequent replacement.
📦 Packing
🪵 Standard Export Wooden Case Packaging
🏭 Application Scenarios
Widely used in pipeline systems in industries such as chemical, petroleum, pharmaceutical, food and beverage, seawater desalination, water treatment, HVAC, etc., it is particularly suitable for working conditions with strict requirements for medium cleanliness and corrosion resistance, and limited installation space medium flows back, and has good sealing performance.
❓ Frequently Asked Questions
Q
What standard does this wafer check valve comply with?
This wafer check valve is manufactured in compliance with the AWWA C594 standard, ensuring consistent quality, dimensional accuracy, and reliable performance across all applicable pipeline applications.
Q
What is the operating temperature range of this valve?
This valve supports a wide operating temperature range from -40°C to 800°C, making it suitable for both cryogenic and high-temperature pipeline systems in various industries.
Q
Which stainless steel grades are available for this wafer check valve?
The valve is available in stainless steel grades 304, 316, and 316L. Each grade offers different levels of corrosion resistance, with 316L being ideal for highly corrosive or saline media environments such as seawater desalination and chemical processing.
Q
Is this valve suitable for use in food, beverage, or pharmaceutical applications?
Yes. The stainless steel material provides a high-polish, non-porous surface that resists bacterial growth and contamination. It meets the hygiene standards required for drinking water, food processing, beverage production, and pharmaceutical preparation systems.
Q
How does the double disc structure improve valve performance?
The double disc design reduces the overall weight and size compared to single-disc valves, enabling faster response to flow changes, lower fluid resistance, and a more compact installation footprint — ideal for systems with limited space.
Q
What packaging method is used for export shipments?
All valves are packed in standard export wooden cases, which provide strong protection against mechanical impact, moisture, and vibration during long-distance international shipping, ensuring that products arrive in perfect condition.