corrosive
Valves for Brine / Sodium Chloride Solution Service
Brine (sodium chloride solution) is handled in chlor-alkali production, food processing, desalination, and produced water from oil wells. High chloride content (up to saturation at ~360 g/L) makes most austenitic stainless steels susceptible to pitting and crevice corrosion.
Pressure Range
1–100 bar
Temperature
Ambient to 90°C (process brine up to 150°C)
Industries
Desalination (RO, MSF, MED), Chlor-alkali production, Food (salt water processing)
What valves are used for Brine / Sodium Chloride Solution service?
Super-duplex 2507 ball valve are recommended for Brine / Sodium Chloride Solution service: High-concentration or hot brine - PREN > 40 required.
Key Properties - Brine / Sodium Chloride Solution
- High chloride - austenitic SS susceptible to pitting above 5,000 ppm Cl⁻
- At saturation (~26% NaCl): highly aggressive to SS 316L at elevated temperature
- PREN (Pitting Resistance Equivalent Number) is the key material selection parameter
- Electrochemical corrosion accelerated at elevated temperature
- In oil production, produced water brine may also contain H₂S and CO₂
Vajra Industrial Solutions manufactures and supplies valves for Brine / Sodium Chloride Solution service — including super-duplex 2507 ball valve — in corrosion-appropriate materials selected for the operating conditions described here, with full material and test documentation.
Need valves for Brine / Sodium Chloride Solution service?
Send your fluid conditions — we'll recommend the right valve, material and standard, with a 24-hour quote.
Material Compatibility - Brine / Sodium Chloride Solution
Ratings are indicative. Actual compatibility depends on concentration, temperature, velocity, and presence of contaminants. Always consult corrosion tables or a materials engineer.
| Material | Rating | Notes |
|---|---|---|
| SS 316L | Fair | Acceptable only for dilute brine at ambient temperature. PREN 24 - borderline for high chloride. |
| Duplex 2205 (PREN ~35) | Good | Good for most brine concentrations at moderate temperature. |
| Super-Duplex 2507 (PREN ~43) | Excellent | Best metallic choice for saturated or hot brine. |
| Titanium Gr. 2 | Excellent | Immune to chloride attack - used in desalination brine service. |
| Carbon Steel | Poor | High corrosion rate in any brine concentration without inhibitor. |
| PTFE-lined | Excellent | Inert to brine at all concentrations. |
| Rubber-lined (EPDM) | Good | Good for saturated brine at ambient temperature. |
Recommended Valves
Super-duplex 2507 ball valve
High-concentration or hot brine - PREN > 40 required
Full selection guideValves to Avoid
SS 316L in hot or concentrated brine
Carbon steel without coating and cathodic protection
Standard cast iron valves
Special Considerations
Applicable Standards
Shop Valves for Brine / Sodium Chloride Solution Service
Other Fluid Services
Brine / Sodium Chloride Solution Service — Procurement & Specification
Typical Applications
Available Standards
Material Options
Documentation Available
- -EN 10204 3.1 Material Test Certificates (heat traceable)
- -API 598 hydrostatic shell & seat test reports
- -Dimensional inspection reports
- -Full Manufacturing Data Record (MDR) / data book on request
Inspection Options
- -In-house QC inspection on every order
- -Third-party inspection (SGS / Bureau Veritas / TÜV / DNV) coordination
- -Witness and hold points accommodated on request
Order Quantities
Flexible — from single critical-spare valves to full project lots.
Export
Worldwide export with complete documentation (COO, EUR.1, packing lists) to 20+ countries.
Custom Engineering
Built to your specification — materials, trim, pressure class and special service (NACE, fire-safe, IBR, cryogenic).
Delivery Support
Dispatch from Vadodara, Gujarat with documented lead times and priority handling for urgent requirements.
Engineering references
Connected Engineering
Need Valves for Brine / Sodium Chloride Solution Service?
Tell us your fluid, pressure, and temperature — we'll recommend the right valve, material, and standard, with a 24-hour quote.