Check Valve Types
Spring-Loaded Check Valve
- Spring-assisted closure
- Can be mounted in any position
- Positive shut-off against backflow
- Fast response to flow reversal
Ball Check Valve
- Floating ball closure element
- Self-cleaning design
- Low cracking pressure
- For viscous and particle-laden fluids
Disc Check Valve
- Lightweight disc element
- Low pressure drop
- Vertical or horizontal mounting
- Quiet, non-slam operation
Technical Specifications
| Parameter | Range / Standard |
|---|---|
| Size Range | DN15 - DN100 (1/2" - 4") |
| Body Material | Stainless Steel 304 (1.4301), 316L (1.4404) |
| Disc/Ball Material | SS304, SS316L |
| Seal Materials | EPDM, Silicone, PTFE, Viton (FDA compliant) |
| Spring Material | SS304, SS316 (optional) |
| Pressure Rating | PN10 / PN16 (10 bar / 16 bar) |
| Temperature Range | -20°C to +130°C (EPDM); -20°C to +200°C (PTFE) |
| Connection Types | Weld, Clamp, Thread, Flange |
| Cracking Pressure | 0.1 - 0.3 bar (depending on size and type) |
| Mounting | Horizontal or Vertical (spring-loaded) |
| Certifications | FDA, 3A, CE, ISO 9001 |
Industry Applications
- Pharmaceutical: WFI loops, formulation lines, CIP return — Zero backflow contamination
- Biotechnology: Media supply, harvest lines, buffer preparation — Sterile barrier protection
- Dairy Processing: Milk collection, pasteurizer feed, CIP supply — Hygienic backflow prevention
- Beverage Production: Syrup lines, carbonation, filling machine supply — Product integrity
- Food Processing: Ingredient supply, cooking lines, packaging — Cross-contamination prevention
- Cosmetics: Raw material supply, mixing vessel feed — Material purity protection
FDA Compliant 3A Certified CE Marked ISO 9001
Need a Sanitary Check Valve Solution?
Our sanitary valve specialists can recommend the optimal check valve type, connection, and seal material for your backflow prevention requirements.
Email: info@chlgvalve.com Call: +86-15601794339