Racer NRV (Non-Return Valves)
What are Racer NRV Valves?
Racer NRVs (Non-Return Valves) are one-way valves designed to allow fluid to flow in a single direction while preventing backflow. They are essential for protecting equipment like pumps and compressors from reverse flow damage and are commonly used in water supply systems, process pipelines, and gas transmission applications.
Asiad Steel Industries manufactures high-performance Racer NRVs in various materials, sizes, and pressure ratings to meet diverse industry needs. Our valves are precision-machined for excellent sealing and long-term reliability.
Key Features
- One-Way Flow Control – Prevents backflow and equipment damage.
- Maintenance-Free Design – Minimal moving parts for long service life.
- Vertical/Horizontal Mounting – Compatible with multiple pipeline layouts.
- Leakproof Performance – Precision seating ensures zero backflow leakage.
- Wide Material Range – Options in stainless steel, carbon steel, and bronze.
Specifications
Mechanical Properties
Equivalent Grades
Weight Chart
Specifications
| Parameter | Description |
|---|---|
| Sizes | ½” to 24″ (DN15 – DN600) |
| Pressure Ratings | Class 150 / 300 / PN16 / PN25 |
| Body Materials | SS 304, SS 316, WCB, Bronze |
| Types Available | Swing, Lift, Wafer, Ball, Dual Plate |
| Standards | API 6D, BS 1868, ASME B16.34 |
| Property | Value |
|---|---|
| Working Pressure | Up to 40 bar |
| Working Temp | -29°C to +400°C (material dependent) |
| Seat Leakage | Zero leakage with soft seats |
| Disc Hardness | 200 – 280 HB |
| Element | Composition (%) |
|---|---|
| Carbon (C) | 0.08 – 0.35 |
| Manganese (Mn) | 0.60 – 1.65 |
| Silicon (Si) | 0.15 – 0.80 |
| Chromium (Cr) | 18.0 – 20.0 (SS) |
| Nickel (Ni) | 8.0 – 10.5 (SS) |
| Molybdenum (Mo) | 2.0 – 3.0 (for F316) |
| Phosphorus (P) | ≤ 0.035 |
| Sulfur (S) | ≤ 0.040 |
| Iron (Fe) | Balance |
| Standard | Equivalent Grade |
|---|---|
| ASTM | A351 CF8 / CF8M, A216 WCB |
| DIN | 1.4301 / 1.4408 |
| BS | 1503-216 Gr. WCB |
| Valve Type | Size (inches) | Weight (kg) |
|---|---|---|
| Wafer NRV | 2″ | 4.2 |
| Swing NRV | 4″ | 11.5 |
| Dual Plate NRV | 6″ | 18.3 |
| Lift NRV | 8″ | 25.0 |
| Ball NRV | 10″ | 35.6 |
Applications of Racer NRV Valves
Construction &
Infrastructure
Automotive & Heavy
Equipment
Manufacturing &
Fabrication
Medical & Laboratory
Equipment
Electrical &
Electronics Assembly
Oil, Gas & Petrochemical
Installations
Do you have questions?
What’s the difference between swing and wafer type NRVs?
Swing type has a hinged disc, while wafer type is compact and fits between flanges. Choice depends on space and flow needs.
Can Racer NRVs be used in vertical pipelines?
Yes, depending on the valve type (lift, ball, or spring-loaded).
Do you offer NRVs with metal-to-metal seating?
Yes, especially for high-temperature or abrasive media applications.
Are Racer NRVs suitable for gas applications?
Absolutely. We offer gas-tight variants designed specifically for gas service lines.
