hydrocarbonC₅–C₁₂ hydrocarbons
Valves for Naphtha (Light / Heavy Naphtha) Service
Naphtha is a broad distillate fraction of crude oil (boiling range ~30–200°C) used as gasoline blending stock, as feedstock for catalytic reforming (to make BTX aromatics), as petrochemical cracker feed, and as a solvent. Light naphtha (C5–C6) is close in properties to gasoline; heavy naphtha (C8–C12) is the catalytic reformer feedstock. Both are highly flammable (flash points below 25°C), non-corrosive to common metals, but requiring fire-safe valves and PTFE or Viton seals in ATEX-classified areas.
Pressure Range
1–35 barg (storage to reformer operating pressure)
Temperature
Ambient to 550°C (catalytic reformer)
Industries
Crude oil distillation (CDU), Catalytic reforming (BTX production), Ethylene cracker feed
What valves are used for Naphtha (Light / Heavy Naphtha) service?
Ball Valve (WCB, fire-safe, PTFE seat) are recommended for Naphtha (Light / Heavy Naphtha) service: Standard for naphtha storage tanks, rundown lines, and blending headers.
Key Properties - Naphtha (Light / Heavy Naphtha)
- Flash point: −40°C to +25°C (depending on cut) - flammable, ATEX Zone 1 in process areas
- Boiling range: 30–200°C - partially volatile at ambient, generates flammable vapour
- Non-corrosive to carbon steel, SS, bronze
- Good compatibility with PTFE and Viton - poor with EPDM and NBR (swell)
- Catalytic reformer: naphtha + H₂ at 450–550°C, 15–35 barg - high-temp/H₂ service for reformer valves
Vajra Industrial Solutions manufactures and supplies valves for Naphtha (Light / Heavy Naphtha) service — including ball valve (wcb, fire-safe, ptfe seat) — in corrosion-appropriate materials selected for the operating conditions described here, with full material and test documentation.
Need valves for Naphtha (Light / Heavy Naphtha) service?
Send your fluid conditions — we'll recommend the right valve, material and standard, with a 24-hour quote.
Material Compatibility - Naphtha (Light / Heavy Naphtha)
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 |
|---|---|---|
| Carbon Steel (WCB) | Excellent | Standard for naphtha storage, transfer, and blending. |
| SS 316L | Excellent | For process naphtha streams requiring higher corrosion resistance. |
| A217 WC6/WC9 | Excellent | For high-temperature catalytic reformer service (>400°C). |
| PTFE seals | Excellent | Best elastomer for naphtha service. |
| EPDM / NBR seals | Not Recommended | Swell in aliphatic and aromatic naphtha. |
Recommended Valves
Ball Valve (WCB, fire-safe, PTFE seat)
Standard for naphtha storage tanks, rundown lines, and blending headers
Full selection guideGate Valve (API 600, WCB)
Mainline isolation for naphtha feeds to reformer and cracker
Full selection guideGlobe Valve (A217 WC6, Stellite trim)
Control in catalytic reformer circuits at elevated temperature
Full selection guideCheck Valve (dual-plate or swing)
Pump protection on naphtha transfer pumps and reformer charge pumps
Full selection guideESD Ball Valve (fire-safe, actuated)
Emergency shutdown on naphtha storage tanks per OISD-118
Full selection guideValves to Avoid
EPDM or NBR-seated valves in naphtha service
Non-fire-safe valves in ATEX Zone 1 areas
Special Considerations
Applicable Standards
Shop Valves for Naphtha (Light / Heavy Naphtha) Service
Other Fluid Services
Naphtha (Light / Heavy Naphtha) 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 Naphtha (Light / Heavy Naphtha) Service?
Tell us your fluid, pressure, and temperature — we'll recommend the right valve, material, and standard, with a 24-hour quote.