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Wholesale Spring Loaded Check Valve stainless steel silent valve Supplier, Manufacturer
Product Description
| Valve Type: | Silent check valve | Structure: | Silent type |
| Standard: | API609 | Workmanship: | Investment casting |
| Sealing direction: | Single-directional | Sealing grade: | Zero leakage |
| Temperature: | -20°C<T<120°C | Operation： | Self-starting |
Characteristics
This SS silent check valve (304/316) is an anti-corrosion non-slam check valve with streamlined axial flow passage and spring quick-close structure. It effectively eliminates water hammer and operating noise while preventing medium backflow automatically. Excellent acid, alkali and seawater resistance makes it ideal for pure water, food, pharmaceutical, chemical and seawater desalination pipeline systems.
Advantages
1
The CF8 silent one way valve resists acid, alkali and seawater corrosion without rusting, meeting anti-corrosion requirements for food, pharmaceutical, chemical and seawater desalination projects.
2
Spring-assisted quick-close design avoids violent impact, eliminates pipeline noise and water hammer, effectively protecting pumps and pipeline accessories.
3
Smooth stainless steel inner surface prevents scaling and medium contamination. Wear-resistant internal parts ensure stable long-term operation with low maintenance costs.
Packing
Standard export wooden case packaging
Application Scenarios
This CF8M silent check valve is widely used in Pure water delivery pipelines, food & pharmaceutical process piping, seawater desalination systems, chemical acid & alkali medium lines, stainless steel circulating water equipment and anti-corrosion water supply projects.
Material Specifications
| Part name | Material | Part name | Material |
| Body | GJS 500-7 | Gasket | EPDM |
| Disc | GJS 500-7+EPDM | Disc nut | ANSI 304 |
| Spring | ANSI 304 | Guide sleeve | C61900 |
| O-ring | NBR | Baffle | GJS 500-7 |
| Stem | ANSI 304 | - | - |
Dimension Specifications
| Nominal diameter | L | D | D1 | N-Φd | |||||||
| DN(mm) | NPS(in) | PN10 | PN16 | PN25 | PN10 | PN16 | PN25 | PN10 | PN16 | PN25 | |
| 50 | 2" | 150 | 165 | 165 | 165 | 125 | 125 | 125 | 4-Φ19 | 4-Φ19 | 4-Φ19 |
| 65 | 2.5" | 170 | 185 | 185 | 185 | 145 | 145 | 145 | 4-Φ19 | 4-Φ19 | 8-Φ19 |
| 80 | 3" | 180 | 200 | 200 | 200 | 160 | 160 | 160 | 8-Φ19 | 8-Φ19 | 8-Φ19 |
| 100 | 4" | 190 | 220 | 220 | 235 | 180 | 180 | 190 | 8-Φ19 | 8-Φ19 | 8-Φ23 |
| 125 | 5" | 200 | 250 | 250 | 270 | 210 | 210 | 220 | 8-Φ19 | 8-Φ19 | 8-Φ28 |
| 150 | 6" | 210 | 285 | 285 | 300 | 240 | 240 | 250 | 8-Φ23 | 8-Φ23 | 8-Φ28 |
| 200 | 8" | 230 | 340 | 340 | 360 | 295 | 295 | 310 | 8-Φ23 | 12-Φ23 | 12-Φ28 |
| 250 | 10" | 250 | 395 | 405 | 425 | 350 | 355 | 370 | 12-Φ23 | 12-Φ28 | 12-Φ31 |
| 300 | 12" | 270 | 445 | 460 | 485 | 400 | 410 | 430 | 12-Φ23 | 12-Φ28 | 16-Φ31 |
Frequently Asked Questions
What standard and sealing grade does this silent check valve comply with?
This silent check valve complies with the API609 standard, utilizes investment casting workmanship, and delivers a single-directional zero-leakage sealing grade.
How does the valve eliminate water hammer and noise?
It features a spring-assisted quick-close mechanism combined with a streamlined axial flow passage. This prevents violent fluid impact during shutoff, eliminating pipeline noise and protecting pumps and accessories.
What operational temperature range can this valve handle?
The working temperature rating for this silent check valve is between -20°C and 120°C (-20°C < T < 120°C).
What media and application scenarios are suitable for this product?
It is suitable for pure water delivery, food & pharmaceutical process piping, seawater desalination, chemical acid & alkali media lines, stainless steel circulating water equipment, and anti-corrosion water projects.
What main materials are used in constructing this check valve?
The valve body and disc are made of GJS 500-7 ductile iron, with ANSI 304 stainless steel for the spring, stem, and disc nut, C61900 for the guide sleeve, and EPDM/NBR for high-durability seals.
How is the product packaged for export?
All units are packed in standard export wooden cases to protect internal and external valve components during international shipping.
