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Valves for Chlor-Alkali Plants - Ras Laffan

Ras Laffan Industrial City is the world's largest LNG export complex, where QatarEnergy LNG (the merged Qatargas and RasGas operations) produces 77 MTPA from the giant North Field - now expanding to 126 MTPA through the North Field East and North Field South megaprojects, the single largest LNG investment globally; valve demand at Ras Laffan is exceptionally high and specification-driven - cryogenic A352 LCC and SS 316 ball, gate, and globe valves with extended bonnets per BS 6364 for LNG service at -162 degrees C, API 6D trunnion ball valves for LNG loading lines and send-out, NACE MR0175 sour-service valves for North Field gas (which contains H2S and CO2), API 607 fire-safe valves throughout, and high-integrity ESD and DBB valves for safety shutdown systems; Shell's Pearl GTL plant (140,000 bpd - the world's largest gas-to-liquids facility) and the Laffan condensate refineries add Class 300-900 process valve demand; QatarEnergy procurement requires ASME B16.34, API 6D, EN 10204 3.1 material certification, and approved vendor list (AVL) registration; Vajra Industrial Solutions supports Qatar EPC contractors and shutdown teams serving Ras Laffan with cryogenic, sour-service, and fire-safe valve packages backed by full MTC traceability.

PVDF-lined butterfly valves for wet chlorine gas, Hastelloy C-276 and titanium ball valves for hydrochloric acid, and SS316L diaphragm valves for caustic soda (NaOH) service.

ASME B16.34ISO 9001:2015API 609 (Butterfly)EN 12756 (Valve Stuffing Boxes)ATEX / IECEx (Chlorine Zone 1)
API 6D Certified
ASME B16.34
ISO 9001:2015
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Chlor-Alkali Plants Valves - Available in Ras Laffan

PVDF-Lined Butterfly Valve

PN 10 / PN 16

Wet chlorine gas isolation - PVDF lining (or solid PVDF body) is uniquely resistant to wet Cl₂; titanium disc for highest corrosion resistance

Materials: WCB or SS316 shell; PVDF lining; titanium disc; FKM seat for Cl₂ service  ·  Standards: API 609, Chlorine Institute Pamphlet 6, ATEX Zone 1
View PVDF-Lined Butterfly Valve options for Ras Laffan

Hastelloy C-276 Ball Valve

Class 150 / 300

Hydrochloric acid (all concentrations, up to 100°C) - only Hastelloy C-276 and titanium resist HCl above 10% concentration

Materials: Hastelloy C-276 (UNS N10276) body, ball, and stem; PTFE seats  ·  Standards: ASME B16.34, API 607 (fire-safe HCl service)
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SS316L Diaphragm Valve

PN 10 / PN 16

Caustic soda (NaOH 30–50%) process and transfer - SS316L body with EPDM diaphragm; also used for sodium hypochlorite

Materials: A351 CF3M (SS316L cast) or A182 F316L forged; EPDM diaphragm  ·  Standards: ASME B16.34, DIN 3202 (diaphragm valves)
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Titanium Ball Valve

Class 150 / 300

Brine service and wet chlorine - Grade 2 titanium resists both Cl₂ and HCl; used in electrolysis cell connections

Materials: Titanium Grade 2 (UNS R50400) body, ball, and stem; PTFE seats  ·  Standards: ASTM B265 (titanium sheet), ASME B16.34
View Titanium Ball Valve options for Ras Laffan

Chlor-Alkali Plants Industry in Ras Laffan

Ras Laffan Industrial City is the world's largest LNG export complex, where QatarEnergy LNG (the merged Qatargas and RasGas operations) produces 77 MTPA from the giant North Field - now expanding to 126 MTPA through the North Field East and North Field South megaprojects, the single largest LNG investment globally; valve demand at Ras Laffan is exceptionally high and specification-driven - cryogenic A352 LCC and SS 316 ball, gate, and globe valves with extended bonnets per BS 6364 for LNG service at -162 degrees C, API 6D trunnion ball valves for LNG loading lines and send-out, NACE MR0175 sour-service valves for North Field gas (which contains H2S and CO2), API 607 fire-safe valves throughout, and high-integrity ESD and DBB valves for safety shutdown systems; Shell's Pearl GTL plant (140,000 bpd - the world's largest gas-to-liquids facility) and the Laffan condensate refineries add Class 300-900 process valve demand; QatarEnergy procurement requires ASME B16.34, API 6D, EN 10204 3.1 material certification, and approved vendor list (AVL) registration; Vajra Industrial Solutions supports Qatar EPC contractors and shutdown teams serving Ras Laffan with cryogenic, sour-service, and fire-safe valve packages backed by full MTC traceability.

LNG (QatarEnergy LNG - Qatargas/RasGas, 77 MTPA, North Field expansion to 126 MTPA)Gas-to-Liquids (Shell Pearl GTL - 140,000 bpd, world's largest GTL plant)Petrochemicals (Qatofin, Q-Chem, Ras Laffan Olefins ethane cracker)Refining (Laffan Refinery - 292,000 bpd condensate splitter)Helium (Qatar Helium 1 & 2 - world's largest helium export hub)Port & Marine (Ras Laffan Industrial City port - LNG/condensate loading)

Critical Valve Requirements

Wet chlorine gas - PVDF or PTFE-lined body, titanium disc; absolutely no iron, nickel-chromium alloys (attacked by wet Cl₂); no copper; FKM or PTFE packing only
Dry chlorine gas (< 20 ppm moisture) - carbon steel is surprisingly acceptable for dry Cl₂; however most plants keep SS316 or titanium as standard
Hydrochloric acid (all concentrations) - Hastelloy C-276 or titanium; SS316 only for dilute (<5%) cold HCl; NEVER use carbon steel
Caustic soda (NaOH) - SS316L acceptable for <70% NaOH; avoid aluminium (catastrophic SCC in NaOH); EPDM diaphragm valves preferred for slurry-free NaOH
Hydrogen gas from electrolysis - ATEX Zone 1; all electrical components on actuated valves must be Ex-certified
Brine (saturated NaCl) - titanium or rubber-lined butterfly; SS316 not reliable above 60°C in concentrated chloride

Why Ras Laffan's LNG (QatarEnergy LNG - Qatargas/RasGas, 77 MTPA, North Field expansion to 126 MTPA) Sector Needs Chlor-Alkali Plants Valves

Ras Laffan Industrial City is the world's largest LNG export complex, where QatarEnergy LNG (the merged Qatargas and RasGas operations) produces 77 MTPA from the giant North Field - now expanding to 126 MTPA through the North Field East and North Field South megaprojects, the single largest LNG investment globally; valve demand at Ras Laffan is exceptionally high and specification-driven - cryogenic A352 LCC and SS 316 ball, gate, and globe valves with extended bonnets per BS 6364 for LNG service at -162 degrees C, API 6D trunnion ball valves for LNG loading lines and send-out, NACE MR0175 sour-service valves for North Field gas (which contains H2S and CO2), API 607 fire-safe valves throughout, and high-integrity ESD and DBB valves for safety shutdown systems; Shell's Pearl GTL plant (140,000 bpd - the world's largest gas-to-liquids facility) and the Laffan condensate refineries add Class 300-900 process valve demand; QatarEnergy procurement requires ASME B16.34, API 6D, EN 10204 3.1 material certification, and approved vendor list (AVL) registration; Vajra Industrial Solutions supports Qatar EPC contractors and shutdown teams serving Ras Laffan with cryogenic, sour-service, and fire-safe valve packages backed by full MTC traceability. Key facilities in the Ras Laffan area - including Ras Laffan Industrial City (RLIC - 295 km2, world's largest LNG export facility), Shell Pearl GTL plant (140,000 bpd gas-to-liquids), North Field East / North Field South expansion (LNG capacity to 126 MTPA by 2027) - rely on PVDF-Lined Butterfly Valve for their lng (qatarenergy lng - qatargas/rasgas, 77 mtpa, north field expansion to 126 mtpa) operations. Vajra Industrial Solutions supplies PVDF-Lined Butterfly Valve, Hastelloy C-276 Ball Valve, SS316L Diaphragm Valve, Titanium Ball Valve for chlor-alkali plants projects across Al Khor, with full ASME B16.34 and ISO 9001:2015 compliance documentation - EN 10204 3.1 material test certificates, API 598 pressure test reports, and third-party inspection co-ordination available for every order.

Delivery to Ras Laffan

Vajra Industrial Solutions offers export documentation and delivery to Ras Laffan in 7–14 business days. Emergency dispatch available for plant shutdowns and critical site requirements.

Also serving: Ras Laffan Industrial City (RLIC - 295 km2, world's largest LNG export facility), Shell Pearl GTL plant (140,000 bpd gas-to-liquids), North Field East / North Field South expansion (LNG capacity to 126 MTPA by 2027), Laffan Refinery 1 & 2 (condensate splitters), Qatofin & Ras Laffan Olefins (1.3 Mtpa ethane cracker)

FAQ - Chlor-Alkali Plants Valves in Ras Laffan

Do you supply chlor-alkali plants valves in Ras Laffan?
Yes. Vajra Industrial Solutions supplies PVDF-Lined Butterfly Valve, Hastelloy C-276 Ball Valve, SS316L Diaphragm Valve, Titanium Ball Valve for chlor-alkali plants applications in Ras Laffan, Al Khor. Ras Laffan Industrial City is the world's largest LNG export complex, where QatarEnergy LNG (the merged Qatargas and RasGas operations) produces 77 MTPA from the giant North Field - now expanding to 126 MTPA through the North Field East and North Field South megaprojects, the single largest LNG investment globally; valve demand at Ras Laffan is exceptionally high and specification-driven - cryogenic A352 LCC and SS 316 ball, gate, and globe valves with extended bonnets per BS 6364 for LNG service at -162 degrees C, API 6D trunnion ball valves for LNG loading lines and send-out, NACE MR0175 sour-service valves for North Field gas (which contains H2S and CO2), API 607 fire-safe valves throughout, and high-integrity ESD and DBB valves for safety shutdown systems; Shell's Pearl GTL plant (140,000 bpd - the world's largest gas-to-liquids facility) and the Laffan condensate refineries add Class 300-900 process valve demand; QatarEnergy procurement requires ASME B16.34, API 6D, EN 10204 3.1 material certification, and approved vendor list (AVL) registration; Vajra Industrial Solutions supports Qatar EPC contractors and shutdown teams serving Ras Laffan with cryogenic, sour-service, and fire-safe valve packages backed by full MTC traceability. We offer export documentation and delivery to Ras Laffan in 7–14 business days with full documentation and third-party inspection.
What certifications are required for chlor-alkali plants valves in Ras Laffan?
For chlor-alkali plants in Ras Laffan, the applicable standards are: ASME B16.34, ISO 9001:2015, API 609 (Butterfly), EN 12756 (Valve Stuffing Boxes), ATEX / IECEx (Chlorine Zone 1), Chlorine Institute Pamphlet 6. All valves are supplied with full documentation including material test reports (EN 10204 3.1/3.2), pressure test certificates, and dimensional inspection reports. Third-party inspection (TPI) by EIL, Bureau Veritas, Lloyd's Register, or the client's nominated inspector can be arranged.
What is the delivery time for chlor-alkali plants valves to Ras Laffan?
Standard stock sizes: export documentation and delivery to Ras Laffan in 7–14 business days. Custom sizes and special materials (Duplex, Hastelloy, P91): 4–8 weeks manufacturing lead time. Express dispatch available for urgent site requirements. Contact us at +91-9979774557 or sales@vajravyuh.com with your specification and required delivery date.
Can I use SS316 valves for chlorine service in a chlor-alkali plant?
No - wet chlorine gas (Cl₂ with moisture) attacks austenitic stainless steel, including SS316. The chromium oxide passive layer that protects SS316 is destroyed by Cl₂ + HCl attack, causing rapid pitting and stress corrosion cracking. For wet chlorine, specify PVDF-lined butterfly valves (PN 10) or titanium ball valves. Dry chlorine (confirmed < 20 ppm moisture) can use carbon steel, but most plants maintain PVDF or titanium as a standard to eliminate moisture moisture monitoring from the maintenance programme.
What valve material handles both chlorine and caustic service?
Titanium Grade 2 is the rare material that resists both wet chlorine gas and dilute caustic soda - making it the preferred choice for brine and cell liquor service where both Cl₂ and NaOH are present. However, titanium is expensive and not suited for concentrated hot NaOH (>70%, above 80°C - risk of titanium stress corrosion cracking in very hot concentrated alkali). For pure caustic service, SS316L diaphragm valves are more economical.

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Chlor-Alkali Plants Valves - Ras Laffan

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Standards

ASME B16.34
ISO 9001:2015
API 609 (Butterfly)
EN 12756 (Valve Stuffing Boxes)
ATEX / IECEx (Chlorine Zone 1)
Chlorine Institute Pamphlet 6