NACE MR0175 API 6D / API 600 FIRE-SAFE API 607

Petrochemical Valves Manufacturer
Refinery, Chemical & Process Plant Valves — India

Supreme Valves manufactures and exports a comprehensive range of valves for refineries, petrochemical complexes, and chemical processing plants. Our petrochemical valves are designed for severe service conditions — high temperatures, corrosive media, sour gas (H2S), and high-pressure hydrocarbon service. All valves comply with API, ASME, and NACE MR0175/ISO 15156 standards for safe and reliable operation in hazardous process environments.

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Valve Solutions for Petrochemical Applications

Refinery Process Valves

Gate, globe, and check valves for crude distillation, catalytic cracking, reforming, and hydrocracking units. API 600/602 design, WCB/WC6/WC9/CF8M bodies, Stellite trim. Class 150-2500.

Fire-Safe Ball Valves

API 6D/608 floating and trunnion ball valves with API 607 fire-safe certification. Metal secondary seating, anti-blowout stem, anti-static device. For hydrocarbon pipeline and process isolation.

Sour Service Valves

NACE MR0175/ISO 15156 compliant valves for H2S-containing environments. Hardness-controlled materials, post-weld heat treatment, and full traceability from heat to finished product.

Chemical Service Valves

Exotic alloy valves for aggressive chemicals: Alloy 20, Hastelloy C-276, Inconel 625, Monel 400, Titanium Gr.2. Lined valves (PFA/PTFE) for concentrated acids. Diaphragm valves for slurry service.

Control & Modulating Valves

Globe-type and rotary control valves for precise flow, pressure, and temperature regulation. Anti-cavitation and low-noise trim options. SIL 2/3 rated for ESD applications.

Double Block & Bleed

DBB ball valves and gate valve assemblies for positive isolation during maintenance. Single-body DBB and compact configurations. API 6D certified for pipeline applications.

Petrochemical Process Unit Valve Requirements

Process Unit Key Valve Types Typical Materials
Crude Distillation (CDU)Gate, globe, check, controlWCB, 5Cr-0.5Mo, SS316
FCC / RFCCSlide valves, gate, ballWC9, CF8M, Stellite
HydrocrackerGate, globe (high pressure)WC6/WC9, SS321H
Amine/Sour WaterGate, globe, check (NACE)WCB (NACE), SS316L
Ethylene CrackerCryogenic gate, ball, checkCF8M, LCB, A352 LCC
Sulfuric Acid PlantPlug, lined butterfly, diaphragmAlloy 20, Hastelloy, PFA-lined

Key Petrochemical Clients We Serve

  • Saudi Aramco — upstream, refining, petrochemicals
  • SABIC — ethylene, polyolefin, fertilizer
  • ADNOC Refining — Ruwais refinery complex
  • Reliance Industries — Jamnagar refinery
  • IOCL / BPCL / HPCL — Indian refineries
  • EPC Contractors — L&T, Technip, Samsung, Saipem
  • Qatar Energy — NGL, LNG processing
  • KNPC Kuwait — refinery modernization

Frequently Asked Questions

What valves are used in petrochemical refineries?
Petrochemical refineries use gate valves (API 600/602) for on-off isolation, globe valves (BS 1873) for throttling and flow control, ball valves (API 6D/608) for quick-shutoff pipeline isolation, butterfly valves (API 609) for large-diameter utility lines, check valves (BS 1868/API 594) for backflow prevention, control valves for process regulation, and safety relief valves (API 526) for overpressure protection. Material selection depends on the process fluid, temperature, and corrosive conditions.
What is NACE MR0175 and why is it important for petrochemical valves?
NACE MR0175 (ISO 15156) is an international standard that defines material requirements for metallic equipment in contact with H2S (hydrogen sulfide) in oil and gas production. For petrochemical valves in sour service, NACE MR0175 mandates maximum hardness limits (e.g., 22 HRC for carbon steel), specific heat treatment requirements, and restrictions on certain alloys. Non-compliance can lead to sulfide stress cracking (SSC) and catastrophic valve failure in sour environments.
Do you supply fire-safe valves for refineries?
Yes. We manufacture API 607-certified fire-safe ball valves and butterfly valves for hydrocarbon service in refineries. Fire-safe design includes metal secondary seating (graphite or metal backup seats that seal after soft seats are destroyed by fire), anti-blowout stem, anti-static device, and fire-safe packing (graphite). All fire-safe valves are type-tested per API 607 7th Edition and supplied with the fire test certificate.
What exotic alloy valves do you offer for chemical plants?
We manufacture valves in a wide range of exotic alloys for aggressive chemical service: Alloy 20 (sulfuric acid), Hastelloy C-276 (chlorine, HCl, wet chlorine gas), Inconel 625 (high-temperature corrosion), Monel 400 (hydrofluoric acid, seawater), Titanium Gr.2 (chlor-alkali, bleach), Duplex/Super Duplex (chloride-containing environments), and 254 SMO (seawater, dilute acids). We also offer PFA and PTFE-lined valves for concentrated acids.

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