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Home > Industrial Equipment & Components > Valve > Butterfly Valve > Three-Piece CB/T3191 Marine Ball Valve for Fuel Oil, Blow-Proof Stem, Anti-Static Device, DN15-DN150

Three-Piece CB/T3191 Marine Ball Valve for Fuel Oil, Blow-Proof Stem, Anti-Static Device, DN15-DN150

Three-Piece CB/T3191 Marine Ball Valve for Fuel Oil, Blow-Proof Stem, Anti-Static Device, DN15-DN150 thumbnail-3

Three-Piece CB/T3191 Marine Ball Valve for Fuel Oil, Blow-Proof Stem, Anti-Static Device, DN15-DN150 thumbnail-4

Three-Piece CB/T3191 Marine Ball Valve for Fuel Oil, Blow-Proof Stem, Anti-Static Device, DN15-DN150 thumbnail-5

Three-Piece CB/T3191 Marine Ball Valve for Fuel Oil, Blow-Proof Stem, Anti-Static Device, DN15-DN150 photo-1

Three-Piece CB/T3191 Marine Ball Valve for Fuel Oil, Blow-Proof Stem, Anti-Static Device, DN15-DN150 photo-2

Three-Piece CB/T3191 Marine Ball Valve for Fuel Oil, Blow-Proof Stem, Anti-Static Device, DN15-DN150 photo-3

Three-Piece CB/T3191 Marine Ball Valve for Fuel Oil, Blow-Proof Stem, Anti-Static Device, DN15-DN150 photo-4

Three-Piece CB/T3191 Marine Ball Valve for Fuel Oil, Blow-Proof Stem, Anti-Static Device, DN15-DN150 photo-5

Product Spotlights

CB/T3191 standard marine ball valve designed for fuel oil systems. Features critical safety components: blow-proof stem prevents ejection, anti-static device eliminates ignition risk. Three-piece design enables easy in-line maintenance. Available DN15-DN150, with material and actuation options. ISO9001 manufacturer ensures reliability for global maritime applications.

Negotiable MOQ: 1 Unit (Price negotiable depending on order volume and customization)

Key Specifications

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Material:

Carbon Steel, Stainless Steel, or other marine-grade alloys

Pressure Rating:

PN16, PN25, or higher (customizable)

Temperature Range:

-20°C to +150°C (standard)

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Shanghai Zhibang Valve Manufacture Co.,ltd

1Yr

Payment & Shipping

Payment Methods:

Port of Shipment:

China

Delivery Detail:

Delivery time depends on order quantity.

Product Details
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Material Carbon Steel, Stainless Steel, or other marine-grade alloys

Pressure Rating PN16, PN25, or higher (customizable)

Temperature Range -20°C to +150°C (standard)

Connection Type Threaded (NPT, BSP) or Flanged (as per standard)

Operation Type Lever, Gearbox, or Pneumatic/Hydraulic Actuator (optional)

Design Standard CB/T3191

Seat Material PTFE, Reinforced PTFE, or Metal

Fire Safe Design Available upon request

Anti-Static Device Standard feature

Blow-Proof Stem Standard feature

As a professional manufacturer with ISO9001 certification, Shanghai Zhibang Valve Manufacture Co., Ltd. specializes in providing reliable fluid control solutions for the global maritime and industrial sectors. Established in 2016 and exporting to key markets worldwide, we understand the critical demands of marine applications. Our Three-Piece CB/T3191 Marine Ball Valve is engineered specifically for fuel oil service, offering robust performance, enhanced safety with its blow-proof stem and anti-static device, and exceptional durability for DN15 to DN150 pipelines.

This valve is designed to meet the stringent requirements of shipboard fuel systems, where reliability and safety are non-negotiable. The three-piece design allows for easy maintenance and inspection without removing the valve body from the pipeline, significantly reducing downtime and operational costs.

Core Product Features & Technical Advantages:

Superior Safety Design: Incorporates a blow-proof stem to prevent stem ejection under high pressure and an anti-static device to safely dissipate static electricity generated by fluid flow, mitigating fire and explosion risks in fuel oil handling.
Robust Construction & Materials: Manufactured from high-grade materials suitable for marine environments, ensuring excellent resistance to corrosion, erosion, and the specific chemical properties of marine fuels.
Excellent Sealing Performance: Utilizes advanced seat materials (like PTFE or metal) that provide a bubble-tight seal, ensuring zero leakage and reliable shut-off even after prolonged use.
Easy Operation & Maintenance: The three-piece body structure facilitates quick disassembly for seat replacement, cleaning, or maintenance without disturbing the pipeline connections, ideal for space-constrained engine rooms.
Versatile Configuration: Available in a wide size range from DN15 to DN150, with options for threaded or flanged ends, and can be fitted with manual levers, gear operators, or automated actuators (pneumatic/hydraulic) based on operational needs.
Compliance with Marine Standards: Designed and manufactured in accordance with the CB/T3191 standard, ensuring compatibility and reliability for Chinese shipbuilding and international marine applications.

Key Technical Specifications:

Parameter	Specification / Value
Design Standard	CB/T3191
Nominal Diameter (DN)	15, 20, 25, 32, 40, 50, 65, 80, 100, 125, 150 mm
Pressure Rating (PN)	PN16, PN25 (Higher ratings available)
Body Material	Carbon Steel (WCB), Stainless Steel (CF8/CF8M), Duplex Steel
Ball & Stem Material	Stainless Steel, with chrome plating or other coatings optional
Seat Material	PTFE, Reinforced PTFE (RPTFE), Metal Seated (Fire Safe)
Temperature Range	Standard: -20°C to +150°C. Extended ranges customizable.
Fire Safe Design	Optional, meeting API 607/API 6FA standards
Operation	Lever, Gearbox, Pneumatic/Hydraulic Actuator (optional)

Benefits for Your Operations:

Enhanced Operational Safety: The integrated safety features directly address critical hazards in fuel oil systems, protecting personnel, assets, and the environment.
Reduced Lifecycle Cost: Durable construction and easy maintenance lead to longer service intervals, fewer replacements, and lower total cost of ownership.
Improved System Reliability: Consistent sealing performance ensures stable fuel supply and control, crucial for main engine and auxiliary machinery operation.
Regulatory Compliance: Helps vessel operators and shipyards meet relevant marine safety and equipment standards.
Global Supply Support: With annual exports valued between US$1-1.5 million and shipments from major ports like Shanghai, Guangzhou, Hong Kong, and Beijing, we ensure timely delivery and support for projects across North America, Europe, Asia, Africa, and Oceania.

Backed by our ISO9001-certified manufacturing processes and nearly a decade of industry experience since 2016, Shanghai Zhibang guarantees product consistency and quality. Our valves are trusted in diverse global markets, from Eastern Europe to Southeast Asia and the Americas. Choosing our Three-Piece Marine Ball Valve means investing in a solution that prioritizes safety, durability, and ease of maintenance for your critical fuel oil applications. We invite you to contact us for detailed quotations, technical datasheets, or to discuss custom requirements tailored to your specific DN size, pressure rating, and actuation needs.

Frequently Asked Questions (FAQ)

Q: What is the primary advantage of the three-piece design over one-piece or two-piece ball valves?
A: The three-piece design allows the valve body to be separated from the end connections without removing the entire valve from the pipeline. This enables much easier internal inspection, seat replacement, and cleaning, drastically reducing maintenance time and cost.
Q: How does the anti-static device function, and why is it important for fuel oil service?
A: The device provides a conductive path between the ball/stem and the valve body, safely grounding any static electricity generated by high-velocity fuel flow. This prevents sparking, which is a critical safety measure to avoid igniting flammable vapors.
Q: Can this valve be used with media other than fuel oil?
A: While specifically optimized for fuel oil, it can be suitable for other non-aggressive liquids, gases, or vapors within its specified pressure and temperature ratings. The seat and seal material selection should be verified for chemical compatibility with the specific medium.
Q: What does "blow-proof stem" mean, and what problem does it solve?
A: A blow-proof stem design incorporates mechanical features (like a shoulder or enlarged diameter section) that prevent the stem from being forcibly ejected from the valve body if the internal packing or seals fail under high line pressure. This is a vital safety feature to contain pressure and protect personnel.
Q: Are these valves available with actuators for remote operation?
A: Yes. We offer options for fitting pneumatic (air), hydraulic, or electric actuators. The valve design includes a standardized mounting pad compatible with major actuator brands, allowing for automated control integration.
Q: Do you provide fire-safe certified versions of this valve?
A: Fire-safe design is an available option. These versions utilize metal secondary seals and are constructed to maintain sealing integrity for a specified duration under fire conditions, typically tested to standards like API 607 or API 6FA.
Q: What is the typical lead time for orders, and what are the packaging details?
A: Lead times vary based on order quantity and specification complexity. Standard configurations are often available from stock or have shorter production cycles. Valves are packaged in individual cartons or wooden cases, with protective coatings and sealing to prevent corrosion during sea shipment.
Q: How does the CB/T3191 standard relate to other international standards like ANSI/API or DIN?
A: CB/T3191 is a Chinese national standard for marine valves. It specifies requirements for design, materials, testing, and marking. While it is a distinct standard, its performance requirements for dimensions, pressure ratings, and testing often align with or are comparable to international norms, ensuring global applicability.