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Zagreb · Pulp & Paper Industry

Valves for Pulp & Paper IndustryZagreb

Zagreb is the corporate procurement headquarters for Croatia's energy and chemical sector — INA (MOL Group subsidiary, 49% Croatian government stake) operates the Rijeka Refinery (4.5 Mtpa — processing Mediterranean crude, producing fuels and petrochemicals) and Croatia's natural gas production from the Molve/Stari Gradac fields (1.5 bcm/year declining domestic production) and the Adriatic Ivana and Ika offshore fields, requiring API 6D ball valves, ASME B16.34 gate and globe valves, and safety relief valves; the Krk LNG Floating Storage and Regasification Unit (FSRU, 2.6 bcm/year import capacity — commissioned January 2021, first LNG terminal on the Eastern Mediterranean — Croatia-EU gas supply diversification project) requires cryogenic A352 LCC valves and API 6D ESD ball valves for regasification circuits; Petrokemija Kutina (INA-owned ammonia and urea complex — 800,000 t/yr urea capacity) requires ASME B16.34 process valves for NH₃ synthesis and CO₂ stripping; Pliva (Teva subsidiary — Zagreb, generic pharmaceutical manufacturing) requires ASME BPE sanitary valves; JANAF's Adriatic oil pipeline system (740 km from Omišalj to Hungary/Slovakia border) requires API 6D pipeline ball valves; Vajra Industrial Solutions supplies Zagreb-based INA, Petrokemija, and EPC procurement with PED CE, ASME, and API-certified valves with EN 10204 3.1 MTCs.

Knife gate valves, diaphragm valves, ball valves (CS/SS), and pinch valves for kraft pulping, black liquor handling, bleaching chemical circuits, and paper machine wet-end service.

ISO 9001:2015ASME B16.34TAPPI TIS 0304-08 (Pulp consistency)IBR (Steam service in recovery boiler)PED 2014/68/EU (European pressure equipment)
API 6D Certified
ASME B16.34
ISO 9001:2015
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Pulp & Paper Industry Valves — Available in Zagreb

Knife Gate Valve (Pulp Stock)

PN 6 / PN 10 / PN 16

Standard on/off isolation valve for pulp stock lines — blade cuts through fibres; rubber-lined for abrasion resistance

Materials: DI or CS body, SS 316 or hardened SS 420 blade, natural rubber or EPDM seat liner  ·  Standards: ISO 9001, EN 13397, TAPPI TIS 0304-08
View Knife Gate Valve (Pulp Stock) options for Zagreb

Diaphragm Valve (Chemical / Bleach Plant)

PN 10 / PN 16

Zero leakage for bleaching chemicals (ClO₂, H₂O₂, NaOH) — no packing in contact with aggressive bleaching agents

Materials: SS 316L or PVDF body, PTFE diaphragm for ClO₂ and H₂O₂, EPDM for NaOH  ·  Standards: ASME B16.34, ISO 16138, ISO 9001
View Diaphragm Valve (Chemical / Bleach Plant) options for Zagreb

Ball Valve (CS / SS, Black Liquor Service)

Class 150 / 300 / 600

Isolation and on/off control on black liquor lines (strongly alkaline, high-temperature, high-solids) — trunnion design for larger sizes

Materials: A216 WCB (lower temperature), SS 316 / CF8M (high-temperature and corrosive service), hardened SS 316 trim  ·  Standards: ASME B16.34, API 6D (where applicable), ISO 9001
View Ball Valve (CS / SS, Black Liquor Service) options for Zagreb

Pinch Valve (White Water / Consistency Control)

PN 6 / PN 10

Pulp consistency and white water flow control — no internal obstruction, self-cleaning, ideal for fibrous suspensions

Materials: CS or DI body, natural rubber sleeve (standard) or EPDM (elevated temperature)  ·  Standards: ISO 9001, EN 13397
View Pinch Valve (White Water / Consistency Control) options for Zagreb

Pulp & Paper Industry Industry in Zagreb

Zagreb is the corporate procurement headquarters for Croatia's energy and chemical sector — INA (MOL Group subsidiary, 49% Croatian government stake) operates the Rijeka Refinery (4.5 Mtpa — processing Mediterranean crude, producing fuels and petrochemicals) and Croatia's natural gas production from the Molve/Stari Gradac fields (1.5 bcm/year declining domestic production) and the Adriatic Ivana and Ika offshore fields, requiring API 6D ball valves, ASME B16.34 gate and globe valves, and safety relief valves; the Krk LNG Floating Storage and Regasification Unit (FSRU, 2.6 bcm/year import capacity — commissioned January 2021, first LNG terminal on the Eastern Mediterranean — Croatia-EU gas supply diversification project) requires cryogenic A352 LCC valves and API 6D ESD ball valves for regasification circuits; Petrokemija Kutina (INA-owned ammonia and urea complex — 800,000 t/yr urea capacity) requires ASME B16.34 process valves for NH₃ synthesis and CO₂ stripping; Pliva (Teva subsidiary — Zagreb, generic pharmaceutical manufacturing) requires ASME BPE sanitary valves; JANAF's Adriatic oil pipeline system (740 km from Omišalj to Hungary/Slovakia border) requires API 6D pipeline ball valves; Vajra Industrial Solutions supplies Zagreb-based INA, Petrokemija, and EPC procurement with PED CE, ASME, and API-certified valves with EN 10204 3.1 MTCs.

Oil & Gas (INA — Rijeka refinery, Croatia gas production)Petrochemical (Petrokemija Kutina — ammonia, urea)Power Generation (HEP — JANAF pipeline)Chemical & Pharmaceutical (Pliva — generic pharmaceuticals)Food Processing (Podravka, Kraš confectionery)LNG Import (Krk FSRU — 2.6 bcm/year LNG terminal)

Critical Valve Requirements

Abrasion resistance for pulp fibres — natural rubber or EPDM liners with hardness 60–70 Shore A for knife gate seats
Full-bore, self-draining design for pulp stock — prevents fibre plug formation when valve is closed
Chemical resistance to bleaching agents: ClO₂, H₂O₂, NaOH, SO₂ — PTFE or PVDF diaphragms for oxidising bleach chemicals
High-temperature capability for black liquor (up to 150°C) — SS 316 or alloy steel body; A217 WC6 for recovery boiler steam
IBR certification for valves on recovery boiler steam lines (high-pressure steam service)
Replaceable wear components (sleeves, liners, diaphragms) — essential for minimising mill downtime
Bi-directional sealing for knife gate valves on pulp stock lines where reverse differential is possible

Why Zagreb's Oil & Gas (INA — Rijeka refinery, Croatia gas production) Sector Needs Pulp & Paper Industry Valves

Zagreb is the corporate procurement headquarters for Croatia's energy and chemical sector — INA (MOL Group subsidiary, 49% Croatian government stake) operates the Rijeka Refinery (4.5 Mtpa — processing Mediterranean crude, producing fuels and petrochemicals) and Croatia's natural gas production from the Molve/Stari Gradac fields (1.5 bcm/year declining domestic production) and the Adriatic Ivana and Ika offshore fields, requiring API 6D ball valves, ASME B16.34 gate and globe valves, and safety relief valves; the Krk LNG Floating Storage and Regasification Unit (FSRU, 2.6 bcm/year import capacity — commissioned January 2021, first LNG terminal on the Eastern Mediterranean — Croatia-EU gas supply diversification project) requires cryogenic A352 LCC valves and API 6D ESD ball valves for regasification circuits; Petrokemija Kutina (INA-owned ammonia and urea complex — 800,000 t/yr urea capacity) requires ASME B16.34 process valves for NH₃ synthesis and CO₂ stripping; Pliva (Teva subsidiary — Zagreb, generic pharmaceutical manufacturing) requires ASME BPE sanitary valves; JANAF's Adriatic oil pipeline system (740 km from Omišalj to Hungary/Slovakia border) requires API 6D pipeline ball valves; Vajra Industrial Solutions supplies Zagreb-based INA, Petrokemija, and EPC procurement with PED CE, ASME, and API-certified valves with EN 10204 3.1 MTCs. Key facilities in the Zagreb area — including INA Rijeka Refinery (180 km southwest — 4.5 Mtpa), Krk FSRU LNG Terminal (LNG terminal on island of Krk — 2.6 bcm/yr), JANAF (Jadransko Naftovodno Dioničko Društvo — Adriatic oil pipeline system) — rely on Knife Gate Valve (Pulp Stock) for their oil & gas (ina — rijeka refinery, croatia gas production) operations. Vajra Industrial Solutions supplies Knife Gate Valve (Pulp Stock), Diaphragm Valve (Chemical / Bleach Plant), Ball Valve (CS / SS, Black Liquor Service), Pinch Valve (White Water / Consistency Control) for pulp & paper industry projects across Zagreb County, with full ISO 9001:2015 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 Zagreb

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

Also serving: INA Rijeka Refinery (180 km southwest — 4.5 Mtpa), Krk FSRU LNG Terminal (LNG terminal on island of Krk — 2.6 bcm/yr), JANAF (Jadransko Naftovodno Dioničko Društvo — Adriatic oil pipeline system), Petrokemija Kutina (ammonia and urea fertiliser complex, 70 km east), INA Molve gas processing plant (Podravina natural gas field)

FAQ — Pulp & Paper Industry Valves in Zagreb

Do you supply pulp & paper industry valves in Zagreb?
Yes. Vajra Industrial Solutions supplies Knife Gate Valve (Pulp Stock), Diaphragm Valve (Chemical / Bleach Plant), Ball Valve (CS / SS, Black Liquor Service), Pinch Valve (White Water / Consistency Control) for pulp & paper industry applications in Zagreb, Zagreb County. Zagreb is the corporate procurement headquarters for Croatia's energy and chemical sector — INA (MOL Group subsidiary, 49% Croatian government stake) operates the Rijeka Refinery (4.5 Mtpa — processing Mediterranean crude, producing fuels and petrochemicals) and Croatia's natural gas production from the Molve/Stari Gradac fields (1.5 bcm/year declining domestic production) and the Adriatic Ivana and Ika offshore fields, requiring API 6D ball valves, ASME B16.34 gate and globe valves, and safety relief valves; the Krk LNG Floating Storage and Regasification Unit (FSRU, 2.6 bcm/year import capacity — commissioned January 2021, first LNG terminal on the Eastern Mediterranean — Croatia-EU gas supply diversification project) requires cryogenic A352 LCC valves and API 6D ESD ball valves for regasification circuits; Petrokemija Kutina (INA-owned ammonia and urea complex — 800,000 t/yr urea capacity) requires ASME B16.34 process valves for NH₃ synthesis and CO₂ stripping; Pliva (Teva subsidiary — Zagreb, generic pharmaceutical manufacturing) requires ASME BPE sanitary valves; JANAF's Adriatic oil pipeline system (740 km from Omišalj to Hungary/Slovakia border) requires API 6D pipeline ball valves; Vajra Industrial Solutions supplies Zagreb-based INA, Petrokemija, and EPC procurement with PED CE, ASME, and API-certified valves with EN 10204 3.1 MTCs. We offer export documentation and delivery to Zagreb in 7–14 business days with full documentation and third-party inspection.
What certifications are required for pulp & paper industry valves in Zagreb?
For pulp & paper industry in Zagreb, the applicable standards are: ISO 9001:2015, ASME B16.34, TAPPI TIS 0304-08 (Pulp consistency), IBR (Steam service in recovery boiler), PED 2014/68/EU (European pressure equipment). 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 pulp & paper industry valves to Zagreb?
Standard stock sizes: export documentation and delivery to Zagreb 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.
What valve is best for pulp stock (fibrous suspension) service?
For pulp stock (cellulosic fibre suspension at 3–14% consistency), knife gate valves are the most common choice. The blade-gate design allows the blade to cut through the fibre mat and seat against a rubber seat liner, providing reliable on/off isolation. Full-bore design prevents fibre plug formation in the valve body. Pinch valves are also widely used for lower-pressure stock lines (PN 6/10) and offer excellent resistance to fibre abrasion (no internal metal in the flow path). Globe and ball valves are not suitable for medium-to-high consistency stock without special design modifications.
What materials resist black liquor in kraft pulp mill valves?
Black liquor is a challenging fluid: strongly alkaline (pH 12–14), high dissolved solids (50–70% dry solids in strong black liquor), contains sodium carbonate, sodium sulphate, sodium sulphide, and lignin, at temperatures of 90–150°C. Carbon steel is susceptible to corrosion in hot black liquor. SS 316 (A351 CF8M) is the standard material for black liquor valve bodies and trim. For high-temperature, high-solids strong black liquor near the evaporators and recovery boiler: Duplex stainless (F51) or Alloy 20 provides better corrosion resistance. White liquor (NaOH + Na₂S, pH 13–14): SS 316L minimum; Duplex preferred.

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Pulp & Paper Industry Valves — Zagreb

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Standards

ISO 9001:2015
ASME B16.34
TAPPI TIS 0304-08 (Pulp consistency)
IBR (Steam service in recovery boiler)
PED 2014/68/EU (European pressure equipment)