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Valves for Chlor-Alkali Plants - Pointe-Noire

Pointe-Noire is the Republic of the Congo's oil capital and deep-water port, the onshore base for TotalEnergies E&P Congo and Eni Congo offshore operations, the Congo LNG floating-liquefaction project, and the Coraf refinery; offshore production, LNG, and refining service demand a specialised valve portfolio - API 6D ball, gate, and check valves in A216 WCB and A182 F51/F55 duplex for crude, gas, and export lines, NACE MR0175 sour-service valves for H2S-bearing streams, cryogenic valves in A352 LCC for LNG and boil-off duty, ESD and emergency-isolation valves for platforms and terminals, severe-service control valves, and API 526 safety-relief valves; ASME B16.34, B16.5 RTJ flanges, and international offshore standards apply with full traceability and PMI; Vajra Industrial Solutions supplies Pointe-Noire offshore operators, refinery and LNG buyers, and oilfield-service and EPC contractors with API 6D, NACE, duplex, cryogenic, and ESD valve packages with complete documentation and Central/West Africa logistics.

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 Pointe-Noire

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
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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
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Chlor-Alkali Plants Industry in Pointe-Noire

Pointe-Noire is the Republic of the Congo's oil capital and deep-water port, the onshore base for TotalEnergies E&P Congo and Eni Congo offshore operations, the Congo LNG floating-liquefaction project, and the Coraf refinery; offshore production, LNG, and refining service demand a specialised valve portfolio - API 6D ball, gate, and check valves in A216 WCB and A182 F51/F55 duplex for crude, gas, and export lines, NACE MR0175 sour-service valves for H2S-bearing streams, cryogenic valves in A352 LCC for LNG and boil-off duty, ESD and emergency-isolation valves for platforms and terminals, severe-service control valves, and API 526 safety-relief valves; ASME B16.34, B16.5 RTJ flanges, and international offshore standards apply with full traceability and PMI; Vajra Industrial Solutions supplies Pointe-Noire offshore operators, refinery and LNG buyers, and oilfield-service and EPC contractors with API 6D, NACE, duplex, cryogenic, and ESD valve packages with complete documentation and Central/West Africa logistics.

Offshore Oil & Gas Production (TotalEnergies, Eni Congo)LNG Liquefaction (Congo LNG - Eni FLNG)Oil Refining (Coraf refinery)Deep-Water Port & Export TerminalsOilfield Services & Logistics

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 Pointe-Noire's Offshore Oil & Gas Production (TotalEnergies, Eni Congo) Sector Needs Chlor-Alkali Plants Valves

Pointe-Noire is the Republic of the Congo's oil capital and deep-water port, the onshore base for TotalEnergies E&P Congo and Eni Congo offshore operations, the Congo LNG floating-liquefaction project, and the Coraf refinery; offshore production, LNG, and refining service demand a specialised valve portfolio - API 6D ball, gate, and check valves in A216 WCB and A182 F51/F55 duplex for crude, gas, and export lines, NACE MR0175 sour-service valves for H2S-bearing streams, cryogenic valves in A352 LCC for LNG and boil-off duty, ESD and emergency-isolation valves for platforms and terminals, severe-service control valves, and API 526 safety-relief valves; ASME B16.34, B16.5 RTJ flanges, and international offshore standards apply with full traceability and PMI; Vajra Industrial Solutions supplies Pointe-Noire offshore operators, refinery and LNG buyers, and oilfield-service and EPC contractors with API 6D, NACE, duplex, cryogenic, and ESD valve packages with complete documentation and Central/West Africa logistics. Key facilities in the Pointe-Noire area - including Pointe-Noire autonomous deep-water port, Coraf (Congolaise de Raffinage) refinery, TotalEnergies and Eni Congo onshore bases - rely on PVDF-Lined Butterfly Valve for their offshore oil & gas production (totalenergies, eni congo) 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 Pointe-Noire, 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 Pointe-Noire

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

Also serving: Pointe-Noire autonomous deep-water port, Coraf (Congolaise de Raffinage) refinery, TotalEnergies and Eni Congo onshore bases, Congo LNG floating liquefaction (Tango / Nguya FLNG)

FAQ - Chlor-Alkali Plants Valves in Pointe-Noire

Do you supply chlor-alkali plants valves in Pointe-Noire?
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 Pointe-Noire, Pointe-Noire. Pointe-Noire is the Republic of the Congo's oil capital and deep-water port, the onshore base for TotalEnergies E&P Congo and Eni Congo offshore operations, the Congo LNG floating-liquefaction project, and the Coraf refinery; offshore production, LNG, and refining service demand a specialised valve portfolio - API 6D ball, gate, and check valves in A216 WCB and A182 F51/F55 duplex for crude, gas, and export lines, NACE MR0175 sour-service valves for H2S-bearing streams, cryogenic valves in A352 LCC for LNG and boil-off duty, ESD and emergency-isolation valves for platforms and terminals, severe-service control valves, and API 526 safety-relief valves; ASME B16.34, B16.5 RTJ flanges, and international offshore standards apply with full traceability and PMI; Vajra Industrial Solutions supplies Pointe-Noire offshore operators, refinery and LNG buyers, and oilfield-service and EPC contractors with API 6D, NACE, duplex, cryogenic, and ESD valve packages with complete documentation and Central/West Africa logistics. We offer export documentation and delivery to Pointe-Noire in 7–14 business days with full documentation and third-party inspection.
What certifications are required for chlor-alkali plants valves in Pointe-Noire?
For chlor-alkali plants in Pointe-Noire, 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 Pointe-Noire?
Standard stock sizes: export documentation and delivery to Pointe-Noire 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 - Pointe-Noire

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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