Non Return Valves (NRV) are designed to allow fluid to flow in one direction only, automatically preventing backflow that could damage equipment, pipelines, and systems. Also known as check valves, these valves operate without any external actuation — they open with forward flow and close automatically when flow stops or reverses. Widely used across water treatment, oil & gas, HVAC, chemical processing, and industrial applications, Non Return Valves are essential components for maintaining system integrity and protecting pumps, compressors, and pipelines from reverse flow damage. Compliant with international standards such as API 594, ASME B16.34, and ISO 9001, these valves are built to ensure top-quality performance and safety.
Specifications:
- Nominal Diameter: DN15 to DN900
- Nominal Pressure: Class 150 to Class 2500
- Body Material: Cast Iron, Ductile Iron, Carbon Steel, Stainless Steel, Bronze
- End Connection:
- Flanged (ASME B16.5)
- Butt Weld (ASME B16.25)
- Socket Weld (ASME B16.11)
- Wafer Type
Design Standards:
- API 594
- API 6D
- ASME B16.34
- BS 5153
- ISO 9001
Types Available:
- Swing Check Valve
- Lift Check Valve
- Dual Plate / Wafer Check Valve
- Piston Check Valve
- Ball Check Valve
Manufacturers:
- KITZ Non Return Valve
- SVR Non Return Valve
- VELAN Non Return Valve
- BONNEY FORGE Non Return Valve
In addition to the manufacturers listed above, we also source high-quality Non Return Valves from reputable manufacturers in China, India, and USA/Europe, providing cost-effective options while maintaining the highest quality and performance. With our extensive experience in supplying valves to key industries worldwide, we are confident in delivering solutions that meet your specific project requirements, whether you seek economical alternatives or premium solutions.
Applications:
Non Return Valves are extensively used across industries where backflow prevention is critical, including:
- Water Supply & Distribution
- Oil & Gas
- Chemical Processing
- Petrochemical Industries
- Power Generation
- Offshore Platforms
- Desalination Plants
- HVAC & Building Services
Our commitment to providing top-quality products ensures that our Non Return Valves offer exceptional performance, reliability, and durability in even the most demanding environments. With our range of sourcing options, we are able to meet both cost and performance demands, making us a trusted partner for high-performance valve solutions.
For more information about our products and services, or to discuss your specific valve requirements, feel free to contact us.
| Technical Parameter | Standard Specifications & Capabilities |
|---|---|
| Valve Profile & Mechanics | Non Return Valve (NRV) / Check Valve (Unidirectional flow mechanism operating automatically via fluid momentum; completely isolates reverse fluid backpressure waves without external actuation) |
| Design Configurations | Swing Check, Lift Check, Dual Plate / Wafer Check, Piston Check, and Ball Check variant structural frameworks |
| Nominal Size Range | DN15 to DN900 (1/2 Inch to 36 Inch pipeline processing grids) |
| Pressure Design Ratings | ASME Class 150 / Class 300 / Class 600 / Class 900 / Class 1500 / Class 2500 |
| Body Metallurgy Alloys | Carbon Steel (ASTM A216 WCB), Stainless Steel (ASTM A351 CF8M), Cast Iron (A126), Ductile Iron (A536), Bronze (B62), and high-grade Exotic Alloys: Hastelloy (C276/C22), Inconel (600/625), Titanium (Grade 2/Grade 5) |
| Disc & Clapper Elements | Precision machined Stainless Steel, Carbon Steel, Cast Iron, or matched Exotic Metallurgies (Hastelloy, Inconel, Titanium) corresponding to body specification |
| Hinge Pins & Springs | Heavy-gauge Stainless Steel (SS316), Hastelloy, Inconel, or Titanium shafts and high-cycle return springs to guarantee fast closing response profiles |
| Seating Configuration | Integral Metal Seat, Stainless Steel/Exotic alloy overlay trim rings, or Resilient Soft Seating options (PTFE, PTFE Lined, Viton, NBR, EPDM) |
| Protective Linings | Available with Fusion Bonded Epoxy (FBE) external coatings, internal PTFE lining sheets, or heavy vulcanized Rubber lining layer protections for corrosive/saline matrices |
| Pipeline Connections | Flanged Ends (ASME B16.5), Butt Weld (ASME B16.25), Socket Weld (ASME B16.11), or space-efficient Wafer Sandwich layout designs |
| Design Compliance Codes | API 594, API 6D, ASME B16.34, BS 5153 testing criteria, ISO 9001 certified pipeline parameters |
| Pressure Testing Standards | API 598 / API 6D hydro-shell structural validation and precise backpressure seating seal leak diagnostics |
| Asset Certification Log | EN 10204 3.1 Traceable Mill Test Reports (MTR), physical casting heat treatment stamps, and complete chemical compliance logs |
| Regional Asset Approvals | Supplied to meet engineering approval metrics across networks monitored by SWCC, NWC, Saudi Aramco, ADNOC, SABIC, MARAFIQ, KOC, and BAPCO Energies |
