CARILO high-precision ball valves are fully engineered to API 6D and ASME B16.34 standards, specifically optimized for high-pressure flow regulation in upstream and downstream oil and gas operations. Utilizing ASTM A216 WCB or A351 CF8M investment casting bodies, these valves maintain structural integrity under extreme pressures up to Class 2500 (6,170 PSI) and temperatures ranging from -29°C to 425°C.
Our designs prioritize ISO 5208 Rate A zero-leakage performance and are API 607 Fire-Safe certified, ensuring failsafe operation in volatile petrochemical environments. To maximize project ROI, 100% of CARILO valves undergo rigorous shell and seat pressure testing per API 598 before dispatch. This stringent QA process ensures a 99.9% operational reliability rate, effectively reducing field maintenance downtime by 25% compared to standard industrial alternatives
Casting vs. Forged Structure
Manufactured using ASTM A216 WCB or A351 CF8M alloys, our casting ball valves offer superior design flexibility for complex internal geometries and larger bore sizes. By adhering to ASME B16.34 wall thickness standards, these valves provide a high-strength alternative to forged options, typically reducing procurement costs by 20-30% for Class 150 to Class 600 applications. The precision casting process ensures streamlined flow paths that minimize turbulence and pressure drop (ΔP). While forged valves are reserved for extreme high-pressure cycles, our casting series delivers the optimal balance of ASTM-certified reliability and scalability. For EPC contractors and global distributors, this represents a high-integrity solution that meets API 6D performance requirements while optimizing project CAPEX.
Material Options
CARILO casting ball valves are engineered in a diverse range of high-grade metallurgies, including ASTM A216 WCB, A351 CF8M, and Duplex A890 4A/5A. This material versatility ensures full compliance with NACE MR0175/ISO 15156 standards for sour gas and aggressive chemical environments. While WCB carbon steel provides high-strength economy for mid-range temperatures, our Duplex and Super Duplex alloys deliver a Pitting Resistance Equivalent Number (PREN) >35 for high-chloride service. To guarantee zero-defect casting integrity, we implement 100% Non-Destructive Testing (NDT), including Radiographic (RT) and Magnetic Particle (MT) inspections per ASME B16.34. By precision-matching metallurgy to specific pH and pressure profiles, we extend valve service life by 30-40% and significantly optimize project lifecycle costs.
Pressure & Temperature Range
Compliant with ASME B16.34 and API 6D, our casting ball valves are engineered for rigorous service from Class 150 (PN20) to Class 600 (PN100). Utilizing ASTM A216 WCB or A351 CF8M with verified induction heat treatment, we guarantee mechanical stability across a wide thermal gradient from -29°C to 425°C (-20°F to 800°F). To ensure zero-leakage integrity, every valve undergoes 100% hydraulic shell testing at 1.5x design pressure and seat testing per API 598 (Rate A). For midstream and downstream infrastructure, our precision-cast series delivers ASTM-certified structural integrity with a 20-25% reduction in procurement CAPEX compared to forged alternatives. This represents a high-ROI solution for large-scale EPC projects that demand strict adherence to safety benchmarks and optimized lifecycle cost-efficiency.
Design Flexibility & Size Range
Utilizing advanced sand and investment casting, CARILO produces ball valves in a comprehensive range from NPS 2 to NPS 60 (DN50–DN1500). This process enables complex internal geometries that optimize Flow Coefficients (Cv) by up to 15% compared to standard forged configurations, effectively minimizing pressure drop (ΔP) in high-capacity pipelines. We maintain rigorous dimensional accuracy within ISO 8062 CT10-12 grades and ensure a surface finish of Ra 6.3–12.5 µm per MSS SP-55 standards. By adhering to ASME B16.34 wall thickness minimums and API 6D specifications, these valves provide high-integrity performance for refining and petrochemical facilities. For global EPC contractors, our precision-cast solutions offer a 10-15% reduction in total valve weight without compromising structural safety, significantly optimizing logistics and project CAPEX.
Applications in Oil, Gas & Chemicals
CARILO casting ball valves are engineered for mission-critical service across the hydrocarbon value chain, including API 6D pipeline transmission, ASTM-grade refinery units, and downstream petrochemical processing. Optimized for Class 150 to Class 600 (PN20–PN100) systems, these valves deliver API 598 Rate A (Zero-Leakage) shutoff in utility lines and midstream storage facilities. Utilizing NACE MR0175/ISO 15156 compliant metallurgy, our series effectively manages sour crude, natural gas liquids (NGLs), and high-pressure steam with a verified operational durability of 50,000+ cycles. For global EPC contractors and stockists, our precision-cast designs reduce procurement CAPEX by 20–30% while maintaining ISO 15848-1 fugitive emission control, ensuring an optimal balance of lifecycle reliability and project profitability in high-demand environments.
What’s the Difference Between Soft Seat and Metal Seat Side Entry Ball Valves | Temperature Range, Sealing Performance, Wear Resistance
Soft-seated side-entry ball valves (such as PTFE) are suitable for temperatures below 200°C and can achieve Class VI zero leakage, but they have poor wear resistance. The pipeline must be purged before operation to prevent
How to Select Materials for Custom Side Entry Ball Valves | Carbon Steel, Stainless Steel, Duplex Steel
Carbon steel (WCB) is suitable for water and oil at temperatures from -29 to 425°C; Stainless steel (316) resists strong acids and withstands high temperatures up to 600°C; Duplex steel (2205) features a Pitting Resistance
How to Improve Side Entry Ball Valve Reliability in Pipelines | Sealing System, Stem Design, Corrosion Protection
The seal utilizes a PEEK bi-directional valve seat resistant to high temperatures up to 260°C to ensure zero leakage; The stem features an anti-blowout stepped design and is equipped with multi-stage O-rings to prevent leakage;
What’s the Difference Between Forged and Cast Side Entry Ball Valves | Strength, Pressure Capacity, Durability
Forged steel side-entry ball valves are forged under high pressure, resulting in a dense internal structure without porosity, extremely high strength, the ability to withstand high pressures of Class 2500 (approximately 42 MPa) and above,
How to Choose a Side Entry Ball Valve for Industrial Pipelines | Pressure Rating, Body Material, End Connection
First, determine the pressure rating, selecting from Class 150 to 2500 based on the operating conditions; Second, determine the material, conventionally using WCB carbon steel, and CF8M stainless steel for corrosive media; ly, select the
What is the difference between a soft seat and a metal seated ball valve?
It was a conversation that brought together two minds, mine from CARILO and the brilliant folks at one of oil&gas companies. In the heart of it was a cautionary tale – a reminder that even
Training of department heads
In order to expand our knowledge in valve technology and operate our plant in an efficient way. CARILO offers training in valve technology to further qualify our team.
Why Use A 3 Piece Ball Valve?
Hey there, my guys! This is Eric. As the Valve Engineer of the Technical Department at CARILO Valve Co., Ltd., I’m thrilled to chat with you about the wonders of 3-piece ball valves. If you’re
The Distinction between DBB& DIB Valves
API 6D calling out the distinction between a double block and bleed valve and a double isolation and bleed valve. But I do not think this distinction is properly recognized by the whole valve industry. we still see many technical documents
Bronze Valve Specialist
Zhejiang Carilo valve Co., Ltd. is one of the top bronze valve manufacturers in China.The material of Bronze has characteristics of low melting point, high hardness, plasticity, and wear resistant, corrosion resistance. So bronze valves
Please note that the final cost depends on the customized service you require, the specifications of the raw materials used, the relevant national laws, and the distance of transportation. Take the example of booking a tall container of products:
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Please note that the final cost depends on the customized service you require, the specifications of the raw materials used, the relevant national laws, and the distance of transportation. Take the example of booking a tall container of products:
Nullam cursus lacinia erat. Phasellus a est. Praesent venenatis metus at tortor pulvinar varius. Vestibulum turpis sem, aliquet eget, lobortis pellentesque, rutrum eu, nisl. Aliquam lobortis.
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Please note that the final cost depends on the customized service you require, the specifications of the raw materials used, the relevant national laws, and the distance of transportation. Take the example of booking a tall container of products:
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Most Popular Questions
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Casting ball valves offer superior design flexibility for complex internal geometries and larger bore sizes up to NPS 60. They typically reduce procurement CAPEX by 20-30% while maintaining API 6D structural integrity for Class 150-600 applications.
Our valves are engineered to ASME B16.34 and API 6D standards, with materials meeting NACE MR0175/ISO 15156 for sour gas service. Fire safety is certified to API 607, and fugitive emissions are strictly controlled per ISO 15848-1.
We utilize ASTM A216 WCB and A351 CF8M alloys with 100% Non-Destructive Testing (NDT), including Radiographic (RT) and Magnetic Particle (MT) inspections. This ensures a surface finish of Ra 6.3–12.5 µm per MSS SP-55 and minimizes porosity defects.
Designed for Class 150 to Class 600 ratings, our WCB valves operate reliably from -29°C to 425°C (-20°F to 800°F). Advanced normalizing and tempering heat treatments ensure grain refinement and thermal stability across diverse midstream and downstream environments.
Yes, our Duplex A890 alloys provide a PREN >35 for high-chloride service. Additionally, the precision casting process optimizes Flow Coefficients (Cv) by up to 15%, reducing pressure drop (ΔP) in high-capacity pipelines from DN50 to DN1500.
Every valve undergoes 100% hydraulic shell testing at 1.5x design pressure and seat testing per API 598 (Rate A). This guarantees zero-leakage performance and an operational durability exceeding 50,000+ cycles for mission-critical industrial projects.
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