Contact Platform Support
Help CenterHigh Temperature Resistant Marine Double Eccentric Butterfly Valve for Engine Room Applications
Product Spotlights
Related Products
-
Gear Operated Marine Double Eccentric Butterfly Valve With Flanged ConnectionNegotiableMOQ: 1 Unit -
Cast Steel Marine Double Eccentric Butterfly Valve DN50-DN1200 PN10NegotiableMOQ: 1 Unit
-
Marine Double Eccentric Butterfly Valve With Mill Test Report and WarrantyNegotiableMOQ: 1 Unit
-
Marine Double Eccentric Butterfly Valve PN16 Cast Steel Body Gearbox OperatedNegotiableMOQ: 1 Unit
-
Marine Double Eccentric Butterfly Valve for Fuel Oil and Lubrication Lines on VesselsNegotiableMOQ: 1 Unit
As a leading manufacturer with a strong presence in over a dozen global markets, Shanghai Zhibang Valve Manufacture Co., Ltd. is proud to introduce our specialized High Temperature Resistant Marine Double Eccentric Butterfly Valve. Engineered specifically for the demanding environment of ship engine rooms, this valve is built to deliver reliable performance where it matters most. Our commitment to quality, backed by our ISO9001 certification and years of manufacturing expertise since 2016, ensures that every valve meets the rigorous standards required for marine applications. We understand that failure is not an option in critical engine room systems, which is why we have designed this valve to withstand extreme temperatures and corrosive conditions, providing peace of mind for ship operators and builders worldwide.
The core of this valve's performance lies in its double eccentric (double-offset) design. Unlike a standard concentric butterfly valve, the disc's rotational axis is offset from both the centerline of the valve body and the seat's centerline. This ingenious design offers several critical advantages for high-temperature service:
- Reduced Wear and Friction: The disc only contacts the seat in the final few degrees of closure, minimizing seat wear and torque requirements over the valve's lifespan.
- Bubble-Tight Shut-Off: The camming action of the eccentric design creates a tight seal against the seat, essential for isolating high-temperature fluids.
- Extended Seat Life: The minimal contact during operation significantly reduces abrasive wear on the seat, a common failure point in high-temperature applications.
Constructed for resilience, the valve features robust materials tailored for marine environments. The body is typically cast from carbon steel (WCB) or stainless steel (CF8/CF8M), with options for duplex steels for enhanced corrosion resistance. The disc is precision-machined from stainless steel to prevent deformation under thermal stress. The seat, a critical component for temperature resistance, is available in advanced polymers like reinforced PTFE or metal seats (such as Inconel or Stellite) for the most extreme temperature ranges up to 400°C.
This valve is designed to integrate seamlessly into your engine room's piping infrastructure. It is available in various connection styles to match your specifications:
- Wafer Style: For installation between two pipe flanges, held in place by the flange bolts.
- Lug Style: Features threaded inserts (lugs) on both sides, allowing the valve to be installed using bolts into a single flange, useful for end-of-line applications.
- Double Flanged: With integral flanges on both ends for direct bolting to mating pipe flanges.
Operation is flexible, with several actuation methods available to suit your control system:
- Manual Lever: For quick, quarter-turn operation in accessible locations.
- Worm Gear Operator: Provides mechanical advantage for easier operation of larger valves or higher pressure systems.
- Electric Actuator: Enables remote, automated control and integration into the ship's central monitoring system.
- Pneumatic Actuator: A reliable option for systems with compressed air available.
Below is a summary of typical technical specifications for standard models:
| Parameter | Specification Range |
| Size Range (Nominal Diameter) | DN50 (2") to DN1200 (48") |
| Pressure Rating | PN10, PN16, PN25 / ANSI Class 150, Class 300 |
| Max. Temperature (with PTFE Seat) | Up to 200°C (392°F) |
| Max. Temperature (with Metal Seat) | Up to 400°C (752°F) |
| Body Material Options | Carbon Steel (WCB), Stainless Steel (CF8, CF8M), Duplex Steel |
| Disc Material Options | Stainless Steel (304, 316, 316L), Carbon Steel with coating |
| Seat Material Options | PTFE, Reinforced PTFE (RPTFE), PEEK, Metal (Inconel, Stellite) |
| Stem Material | Stainless Steel (410, 304, 316) |
| Leakage Rate | ANSI/FCI 70-2 Class IV (Metal Seat) or Class VI (Soft Seat) |
The benefits for your marine operation are substantial. By choosing our high-temperature resistant valve, you gain enhanced system reliability, reducing the risk of unplanned downtime in the engine room. The durable construction leads to lower lifecycle costs through reduced maintenance and longer intervals between overhauls. Furthermore, the efficient sealing mechanism contributes to improved energy efficiency by preventing heat loss from the system. For shipyards and naval architects, the availability of various sizes, pressure ratings, and actuator options provides the design flexibility needed for both new builds and retrofit projects.
With an annual export value consistently between US$1 Million and US$1.5 Million, Shanghai Zhibang has proven its capability to deliver quality products reliably to a diverse clientele across North America, South America, Europe, Asia, Africa, and Oceania. Our strategic location and multiple ports of shipment—Shanghai, Guangzhou, Hong Kong, and Beijing—ensure efficient logistics and timely delivery for your global projects. Our ISO9001 certified manufacturing process guarantees that every High Temperature Resistant Marine Double Eccentric Butterfly Valve is produced with precision and consistency. For a valve solution that combines robust high-temperature performance with the reliability demanded by the marine industry, contact us today to discuss your specific requirements and request a detailed quotation.
Frequently Asked Questions (FAQ)
Q1: What makes a "double eccentric" design better than a standard butterfly valve for high-temperature engine room applications?
A: The double eccentric design minimizes contact between the disc and seat during operation. This drastically reduces friction and wear, which is exacerbated by high temperatures. It also creates a more effective sealing force at closure, ensuring reliable shut-off of hot fluids, which is critical for safety and system integrity.
Q2: Can this valve handle seawater or other corrosive fluids in the engine room?
A: Yes, when specified with appropriate materials. For seawater cooling lines or other corrosive media, we recommend a valve body and disc constructed from stainless steel (such as 316L) or duplex stainless steel. The seat can be specified in chemically resistant polymers or specialized metal alloys to match the fluid.
Q3: What is the maximum pressure this valve can withstand at high temperatures?
A: The pressure rating is temperature-dependent. Standard ratings like PN16 or Class 150 are typically valid up to the maximum temperature of the selected seat material. For precise pressure/temperature curves for a specific material combination, please consult our technical datasheets or contact our engineering team.
Q4: Is this valve suitable for controlling flow, or is it only for isolation (on/off) service?
A> While its primary strength is in isolation service due to its excellent shut-off capability, the double eccentric design also offers reasonably good flow modulation characteristics. For precise flow control applications, we can provide recommendations on actuator types and control accessories.
Q5: How does the installation differ between wafer-style and lug-style valves?
A: A wafer-style valve is installed between two flanges; the flange bolts pass through holes in the valve body. A lug-style valve has threaded inserts (lugs) on both sides; it can be bolted to one flange without needing bolts to pass through the entire assembly, which is advantageous for end-of-line installations or when one side needs to be disconnected independently.
Q6: Do you offer fire-safe certified versions of this valve for engine room safety?
A> Fire-safe design options are available. These valves are engineered with secondary metal sealing surfaces to maintain a seal even if the primary polymer seat is compromised by fire, meeting standards such as API 607, API 6FA, or ISO 10497. Please specify this requirement when inquiring.
Q7: What is the typical lead time for an order of these valves?
A: Lead time depends on the size, material specifications, and quantity. Standard configurations in common sizes often have shorter lead times. For customized orders (special materials, actuators, or sizes), our sales team can provide an accurate timeline based on current production schedules.
Q8: Can you supply the valve with an actuator already mounted and tested?
A: Absolutely. We offer comprehensive pre-assembly and testing services. We can mount and set up electric, pneumatic, or hydraulic actuators at our factory, perform full stroke and control signal tests, and deliver a ready-to-install actuated valve package, saving you time and ensuring compatibility.
Send Inquiry to This Supplier
You May Also Like
-
Standard Compliant Marine Double Eccentric Butterfly Valve for ShipbuildingNegotiableMOQ: 1 Unit
-
Custom-Designed Butterfly Valve for Seawater Cooling System PipeworkNegotiableMOQ: 1 Unit
-
Customized Marine Butterfly Valve With Pneumatic Actuator and PositionerNegotiableMOQ: 1 Unit
-
Custom Marine Butterfly Valve With 3-Year Warranty on Body and DiscNegotiableMOQ: 1 Unit
-
Custom Marine Butterfly Valve With Extended Shaft for Insulated PipingNegotiableMOQ: 1 Unit
-
Non-Standard Marine Butterfly Valve With Fire-Safe API 607 DesignNegotiableMOQ: 1 Unit
-
High-Performance Marine Butterfly Valve Customized to DN200 PN16 SpecificationsNegotiableMOQ: 1 Unit
-
Mill Test Report Provided With Every Custom Marine Butterfly Valve OrderNegotiableMOQ: 1 Unit
-
Non-Standard Marine Butterfly Valve for Shipboard Fuel Oil Transfer LinesNegotiableMOQ: 1 Unit
-
Lug Type Butterfly Valve For Petrochemical Marine Systems, 150LB ANSI ClassNegotiableMOQ: 1 Unit
