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Valves for Carbon Capture & Storage (CCS) — Tunis

Tunisia's Sfax-Gabes phosphate and phosphoric acid corridor (operated by Groupe Chimique Tunisien) is one of Africa's largest chemical industrial complexes, requiring corrosion-resistant PVDF and rubber-lined ball valves and large-bore SS 316 butterfly valves for phosphoric acid service; ENI and Equinor offshore oil and gas fields in the Gulf of Tunis drive demand for API 6D certified subsea-rated valves, while the national water utility SONEDE's infrastructure rehabilitation programme sources large quantities of resilient-seated gate and butterfly valves for potable water networks.

SS316L gate and globe valves for amine absorber CO₂ capture, Class 900 Duplex ball valves for supercritical CO₂ compression and transport, and NACE-compliant valves for CO₂ geological storage.

NACE MR0175 / ISO 15156 (sour CO₂)ASME B16.34API 6DAPI 607 (Fire-Safe)ISO 15848-1 (Fugitive Emissions)
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Carbon Capture & Storage (CCS) Valves — Available in Tunis

Globe Valve (Amine Service)

Class 150 / 300

Lean/rich amine absorber and stripper — hot amine (MEA/MDEA) is corrosive; SS316L with Stellite trim for erosion control

Materials: A351 CF3M (SS316L cast) body; Stellite 6 seat and plug; PTFE packing  ·  Standards: API 623, BS 1873, ASME B16.34
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Ball Valve (Supercritical CO₂)

Class 600 / 900

CO₂ compressor outlet and injection well isolation — supercritical CO₂ (> 73 bar) is an excellent solvent; seals must be CO₂-compatible

Materials: A890 Duplex 2205 or SS316L; PTFE seats; special CO₂-resistant elastomers (EPDM or HNBR rated for supercritical CO₂)  ·  Standards: API 6D, API 607, ISO 15848-1
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Gate Valve (CO₂ Pipeline)

Class 300 / 600 / 900

CO₂ trunk pipeline isolation — API 6D full-bore gate valves; same specification as natural gas pipelines but with CO₂-compatible seals

Materials: A216 WCB with SS316 trim (dry CO₂); A182 F316L for wet CO₂ + H₂S service  ·  Standards: API 6D, API 600, ASME B16.34
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Check Valve (CO₂ Compressor)

Class 300 / 600

CO₂ compressor inter-stage and discharge back-flow prevention

Materials: A351 CF8M SS316; PTFE seat; SS316 spring  ·  Standards: API 594, API 6D, ASME B16.34
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Carbon Capture & Storage (CCS) Industry in Tunis

Tunisia's Sfax-Gabes phosphate and phosphoric acid corridor (operated by Groupe Chimique Tunisien) is one of Africa's largest chemical industrial complexes, requiring corrosion-resistant PVDF and rubber-lined ball valves and large-bore SS 316 butterfly valves for phosphoric acid service; ENI and Equinor offshore oil and gas fields in the Gulf of Tunis drive demand for API 6D certified subsea-rated valves, while the national water utility SONEDE's infrastructure rehabilitation programme sources large quantities of resilient-seated gate and butterfly valves for potable water networks.

Oil & GasPhosphate ProcessingWater TreatmentManufacturingChemical

Critical Valve Requirements

Wet CO₂ (CO₂ + H₂O) forms carbonic acid — attacks carbon steel at ppm level; SS316L mandatory for any wet CO₂ stream
Sour CO₂ (CO₂ + H₂S) — NACE MR0175 compliance required if H₂S partial pressure exceeds 0.0003 MPa threshold
Supercritical CO₂ seal compatibility — standard NBR/EPDM can swell and extrude in supercritical CO₂; only EPDM or HNBR grades specifically rated for CO₂ service
ISO 15848-1 fugitive emissions Class B or better — CCS projects have regulatory pressure to demonstrate zero leakage
Amine service valves — methyldiethanolamine (MDEA) and monoethanolamine (MEA) attack zinc and copper alloys; SS316L or WCB/SS316 trim only
Fire-safe API 607 for all CO₂ compressor and injection valve service — CO₂ does not burn, but co-firing with H₂S is a fire hazard in sour CCS

Why Tunis's Oil & Gas Sector Needs Carbon Capture & Storage (CCS) Valves

Tunisia's Sfax-Gabes phosphate and phosphoric acid corridor (operated by Groupe Chimique Tunisien) is one of Africa's largest chemical industrial complexes, requiring corrosion-resistant PVDF and rubber-lined ball valves and large-bore SS 316 butterfly valves for phosphoric acid service; ENI and Equinor offshore oil and gas fields in the Gulf of Tunis drive demand for API 6D certified subsea-rated valves, while the national water utility SONEDE's infrastructure rehabilitation programme sources large quantities of resilient-seated gate and butterfly valves for potable water networks. Key facilities in the Tunis area — including La Goulette Industrial Zone, Bizerte Industrial Zone, Sfax Phosphate Complex — rely on Globe Valve (Amine Service) for their oil & gas operations. Vajra Industrial Solutions supplies Globe Valve (Amine Service), Ball Valve (Supercritical CO₂), Gate Valve (CO₂ Pipeline), Check Valve (CO₂ Compressor) for carbon capture & storage (ccs) projects across Tunis, with full NACE MR0175 / ISO 15156 (sour CO₂) and ASME B16.34 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 Tunis

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

Also serving: La Goulette Industrial Zone, Bizerte Industrial Zone, Sfax Phosphate Complex, Ben Arous Industrial Park

FAQ — Carbon Capture & Storage (CCS) Valves in Tunis

Do you supply carbon capture & storage (ccs) valves in Tunis?
Yes. Vajra Industrial Solutions supplies Globe Valve (Amine Service), Ball Valve (Supercritical CO₂), Gate Valve (CO₂ Pipeline), Check Valve (CO₂ Compressor) for carbon capture & storage (ccs) applications in Tunis, Tunis. Tunisia's Sfax-Gabes phosphate and phosphoric acid corridor (operated by Groupe Chimique Tunisien) is one of Africa's largest chemical industrial complexes, requiring corrosion-resistant PVDF and rubber-lined ball valves and large-bore SS 316 butterfly valves for phosphoric acid service; ENI and Equinor offshore oil and gas fields in the Gulf of Tunis drive demand for API 6D certified subsea-rated valves, while the national water utility SONEDE's infrastructure rehabilitation programme sources large quantities of resilient-seated gate and butterfly valves for potable water networks. We offer export documentation and delivery to Tunis in 7–14 business days with full documentation and third-party inspection.
What certifications are required for carbon capture & storage (ccs) valves in Tunis?
For carbon capture & storage (ccs) in Tunis, the applicable standards are: NACE MR0175 / ISO 15156 (sour CO₂), ASME B16.34, API 6D, API 607 (Fire-Safe), ISO 15848-1 (Fugitive Emissions), API 598, ISO 21013 (CO₂ Safety). 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 carbon capture & storage (ccs) valves to Tunis?
Standard stock sizes: export documentation and delivery to Tunis 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 carbon steel valves be used in CO₂ service?
Dry CO₂ (water content below 50 ppm) does not corrode carbon steel — dried CO₂ from industrial sources is used in carbon steel pipelines. However, wet CO₂ (water-saturated gas or any liquid CO₂ + water) forms carbonic acid (pH ≈ 3.7 at 1 bar CO₂ partial pressure), which corrodes carbon steel rapidly (>10 mm/year in worst cases). Therefore: dry CO₂ pipeline and injection service — carbon steel A216 WCB acceptable with SS316 trim. Wet CO₂ anywhere in the process — SS316L mandatory. When in doubt, specify SS316L — the cost premium is small versus the corrosion risk.
What is the difference between CCS and carbon capture for enhanced oil recovery (CO₂-EOR)?
Carbon capture and storage (CCS) injects CO₂ into saline aquifers or depleted reservoirs for permanent geological storage. CO₂-EOR (Enhanced Oil Recovery) injects CO₂ into producing oil reservoirs to mobilise residual oil — the CO₂ is partially recycled from produced gas. Valve specifications are similar: both require Class 900–2500 forged SS316L or Duplex 2205 for injection service. CO₂-EOR streams have higher impurity (H₂S, hydrocarbons) requiring NACE MR0175. Pure CCS streams from power plant flue gas typically contain only CO₂ + traces of SO₂ and NOₓ — simpler chemistry, SS316L usually sufficient.

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Carbon Capture & Storage (CCS) Valves — Tunis

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Standards

NACE MR0175 / ISO 15156 (sour CO₂)
ASME B16.34
API 6D
API 607 (Fire-Safe)
ISO 15848-1 (Fugitive Emissions)
API 598
ISO 21013 (CO₂ Safety)

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