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Marine Angle Flange Pressure Relief Valve CBT3843-1999 for Engine Cooling Systems
Product Spotlights
Marine-grade angle flange pressure relief valve (CBT3843-1999) for engine cooling system protection. Features robust construction with corrosion-resistant materials, precise pressure control, and reliable resealing. The angle flange design simplifies installation in tight engine rooms. Optional manual test lever enables easy maintenance checks. Manufactured under ISO9001, it ensures safety compliance and prevents costly engine damage from overpressure, supporting global maritime operations with reliable delivery from major ports.
Negotiable
MOQ: 20 Units (Price negotiable depending on order volume and customization)
Key Specifications
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Product Model:
CBT3843-1999
Valve Type:
Angle Flange Pressure Relief Valve
Application:
Marine Engine Cooling Systems
Payment & Shipping
Payment Methods:
Port of Shipment:
shanghai
Delivery Detail:
7 days
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Product Model
CBT3843-1999
Valve Type
Angle Flange Pressure Relief Valve
Application
Marine Engine Cooling Systems
Connection Type
Flanged
Body Material
Cast Steel / Ductile Iron
Seat Material
Stainless Steel / Alloy
Pressure Setting Range
Customizable (e.g., 0.5-10 Bar)
Temperature Range
-20°C to 120°C
Standards
Marine Industry Standards
Optional Feature
Manual Test Lever
As a specialized manufacturer with ISO9001 certified quality management, Shanghai Zhibang Valve Manufacture Co., Ltd. proudly presents our Marine Angle Flange Pressure Relief Valve Model CBT3843-1999. Engineered specifically for the demanding environment of marine engine cooling systems, this valve is a critical safety component designed to protect expensive propulsion and auxiliary engines from the catastrophic effects of overpressure. Since our establishment in 2016, we have focused on delivering reliable fluid control solutions, and this valve exemplifies our commitment to durability, precision, and performance in maritime applications. It is a trusted component for shipbuilders, repair yards, and fleet operators worldwide, exported from key ports like Shanghai and Guangzhou to global markets.
This pressure relief valve is meticulously crafted to automatically release excess pressure within a closed cooling water circuit, thereby preventing damage to heat exchangers, piping, pumps, and the engine block itself. Its angle flange design allows for compact installation in tight engine room spaces while facilitating straightforward piping connections. The robust construction ensures long-term reliability in the face of constant vibration, thermal cycling, and corrosive seawater or freshwater coolant media.
Core Technical Specifications & Design Advantages:
- Precision Pressure Control: The valve is pre-set or adjustable to a specific cracking pressure, ensuring it opens precisely when system pressure exceeds the safe limit. This accuracy is vital for maintaining optimal engine operating temperatures and preventing thermal stress.
- Robust Construction for Marine Use: Manufactured from high-grade materials such as cast steel or ductile iron for the body and corrosion-resistant alloys for internal trim (seat, disc, spring), the valve withstands the harsh marine atmosphere, including salt spray and high humidity.
- Reliable Resealing: Designed to close tightly once system pressure returns to a safe level below the set point, minimizing coolant loss and maintaining system integrity. A tight seal prevents continuous weeping or leakage.
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Angle Flange Configuration: This design offers significant installation benefits:
- Simplifies piping layouts by changing flow direction at the valve body.
- Reduces the need for additional elbows or fittings, saving space and potential leak points.
- Provides a stable, bolted connection that can handle pipeline stress and vibration.
- Optional Manual Test Lever: Many models include a manual test lever, allowing periodic functional testing by engineers to verify the valve's operational readiness without needing to generate system overpressure, a crucial feature for preventative maintenance schedules.
- Spring-Loaded Mechanism: Utilizes a calibrated helical spring to control the opening force. This mechanism is reliable, relatively insensitive to orientation, and provides consistent performance over time.
Detailed Parameter Table:
| Parameter | Specification / Description |
| Model Designation | CBT3843-1999 (Standard Marine Series) |
| Primary Function | Overpressure Protection for Liquid Systems |
| Connection Standard | Flanged (Dimensions per ANSI, JIS, or DIN standards available upon request) |
| Pressure Setting | Factory set or field adjustable within a specified range (e.g., 0.5 Bar to 10 Bar) |
| Flow Capacity | Rated based on set pressure; ensures adequate discharge to relieve overpressure |
| Seat Type | Soft seat (for tight shut-off) or metal-to-metal seat (for high temperature) options |
| Body Material Options | Cast Steel (WCB), Ductile Iron, Bronze |
| Internal Trim Materials | Stainless Steel (304/316), Alloy 20, Hastelloy for corrosive coolants |
| Spring Material | Stainless Steel, Inconel |
| Gasket Material | Graphite, PTFE, EPDM (suitable for coolant temperature) |
| Operating Temperature | Standard: -20°C to 120°C; High-temp designs available |
| Applicable Fluid | Fresh Water, Sea Water, Glycol-Water Mixtures, Oil |
| Optional Features | Manual Test Lever, Lockable Device, Flange Drain Connection |
Benefits for Your Marine Operations:
- Engine Protection & Uptime: Directly safeguards your vessel's main and auxiliary engines from costly cooling system failures, reducing unplanned downtime and expensive repairs.
- Regulatory Compliance: Helps vessel operators meet classification society rules (like ABS, DNV, LR, BV) and international safety standards (SOLAS) that mandate overpressure protection for essential systems.
- Reduced Maintenance Costs: The valve's durable design and reliable operation lower long-term maintenance needs. The test lever feature allows for easy in-situ verification.
- System Design Flexibility: The angle flange body simplifies system layout for naval architects and engineers, allowing more efficient use of valuable engine room space.
- Global Supply & Support: With an annual export value between US$1-1.5 million and shipments from major Chinese ports (Shanghai, Guangzhou, Hong Kong), we ensure reliable delivery and support to customers across North America, Europe, Southeast Asia, Africa, and beyond.
Choosing the CBT3843-1999 Marine Angle Flange Pressure Relief Valve means investing in proven safety and reliability. Backed by our ISO9001 certification, it reflects a manufacturing process focused on consistency and quality control. Our experience since 2016 in serving diverse global markets from Oceania to the Middle East ensures we understand the specific requirements of different maritime regions. This valve is not just a component; it is an integral part of your vessel's operational safety net. For detailed specifications, pressure setting requirements, or to discuss a customized solution for your specific engine cooling application, please contact our technical sales team. Protect your assets and ensure operational continuity with a valve built for the marine environment.
Frequently Asked Questions (FAQ):
-
Q: What is the main purpose of this pressure relief valve in an engine cooling system?
A: Its primary role is to act as a safety device. It automatically opens to discharge fluid (coolant) if the pressure inside the closed cooling circuit exceeds a predetermined safe limit, preventing potential damage to the engine, heat exchangers, and piping. -
Q: Can the pressure setting be adjusted on-site, or is it factory-set?
A> This depends on the specific order configuration. We offer valves that are factory-set to your specified cracking pressure for guaranteed performance. Alternatively, models with an external adjustment screw are available for field adjustment within a defined range, offering flexibility during commissioning or system changes. -
Q: Is this valve suitable for use with both seawater and freshwater cooling systems?
A: Yes, but material selection is crucial. For seawater service, we highly recommend specifying body and trim materials with high corrosion resistance, such as Super Duplex Stainless Steel or Nickel-Aluminum Bronze alloys, to ensure longevity. -
Q: How do I determine the correct size (flange diameter and orifice size) for my application?
A: Sizing depends on the required flow capacity to relieve overpressure and your pipeline dimensions. Our technical team can assist you. We need details like system volume, maximum allowable working pressure (MAWP), the desired set pressure, and the properties of the coolant. -
Q: Does the valve come with any certification for marine use?
A> While the valve is manufactured under an ISO9001 quality system, specific certifications from classification societies (like ABS, DNV, LR type approval) are typically obtained by the shipyard or integrator as part of the vessel's overall system certification. We can provide material certificates and test reports (e.g., pressure tests) to support this process. -
Q: What maintenance does this valve require?
A> Recommended maintenance includes periodic operational testing using the manual lever (if equipped) and visual inspection for leaks. Depending on coolant cleanliness and operating hours, internal inspection for wear or deposit buildup on the seat and disc may be advised during major engine overhauls. -
Q: Are spare parts like springs and seal kits available?
A: Yes, we maintain an inventory of critical spare parts for our standard valve models. Providing the valve model and serial number ensures you receive the correct repair kit, which typically includes the spring, seat, disc, and gaskets. -
Q: What is the typical lead time for an order?
A: Lead times vary based on order quantity, material specifications, and pressure settings. For standard configurations, we often have stock or can produce within a few weeks. We provide accurate delivery estimates upon receipt of your detailed inquiry.
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1Yr
Business Type
Manufacturer
Year Established
2016
Annual Export Value
US$1 Million - US$1.5 Million
Product Certifications
ISO9001
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