If you’re sourcing industrial valves for marine, offshore, or seawater applications, you know the stakes: standard carbon steel or stainless steel valves often fail prematurely in saltwater environments, succumbing to pitting corrosion, crevice attack, and biofouling. The result? Costly shutdowns, frequent replacements, and safety risks that can derail even the most well-planned projects.
Enter the Jonloo 2 Inch Class 150 C95800 Nickel Aluminum Bronze Gate Valve—the heavy-duty, corrosion-proof flow control solution built to thrive where other valves fail. Engineered for marine-grade performance, this NAB gate valve is purpose-built for shipbuilding, offshore oil and gas, desalination plants, and coastal power facilities, delivering unbeatable durability, zero leakage, and long-term reliability in chloride-rich seawater and corrosive industrial fluids.
In this guide, we break down everything you need to know about this top-tier valve, including its game-changing C95800 material, key design features, compliance with global standards, and why it’s the go-to choice for engineers, procurement managers, and marine operators worldwide.
Let’s start with the star of the show: ASTM B148 C95800 Nickel Aluminum Bronze (NAB). Unlike carbon steel, which rusts rapidly in saltwater, or 316 stainless steel, which is prone to pitting in high-chloride environments, C95800 is a copper-based alloy engineered specifically for marine and corrosive service.
- Unmatched Saltwater Corrosion Resistance: The alloy forms a self-healing oxide layer that blocks chloride penetration, preventing pitting, crevice corrosion, and stress cracking—common causes of valve failure in seawater systems.
- Biofouling Resistance: Unlike steel valves, C95800 naturally inhibits marine growth, reducing maintenance and flow blockages in ship ballast systems, desalination intake lines, and offshore firewater networks.
- High Mechanical Strength: With excellent tensile strength and wear resistance, C95800 NAB withstands the vibration, cyclic loading, and pressure fluctuations common in offshore and marine operations.
- Cavitation and Erosion Resistance: Ideal for high-flow seawater systems, the alloy resists damage from fluid turbulence and cavitation, extending valve life even in demanding conditions.
Jonloo's 2-inch Class 150 gate valve is forged from 100% certified C95800 NAB, with every batch tested for chemical composition and mechanical properties to meet ASTM B148 standards. No cut corners, no subpar materials—just pure, marine-grade quality you can trust.
When you choose Jonloo, you’re not just buying a valve—you’re investing in precision engineering built for real-world marine challenges. Let’s dive into the features that make this Class 150 flanged gate valve a cut above the competition:
- Rising Stem with Handwheel Operator: The visible stem provides clear open/closed position indication, critical for quick visual checks during shipboard inspections or offshore emergency response.
- Full Bore, Low Pressure Drop: The valve’s full-flow design eliminates flow restrictions, ensuring optimal performance in seawater cooling lines, firewater systems, and ballast piping. No turbulence, no energy waste—just smooth, efficient flow.
- C95800 Trim: The wedge is made from the same NAB alloy, eliminating galvanic corrosion risks common in mixed-material valves.
- Class 150 Pressure Rating: Designed for ASME Class 150 (PN20) service, this valve handles operating pressures up to 285 PSI (19.6 bar) at ambient temperatures, making it suitable for most marine and industrial seawater applications.
- High-Strength Bolted Bonnet: Secured with corrosion-resistant alloy bolts and a spiral-wound metal gasket, the bonnet provides a leak-tight seal that withstands thermal cycling and pressure spikes.
- API 600 Compliance: Built to API 600 standards for gate valves, the bolted bonnet design ensures compliance with global safety codes for oil and gas, marine, and industrial use.
- Class 150 Raised Face (RF) Flanges: The valve features standard ASME B16.5 Class 150 flanged ends, compatible with all standard pipeline connections. No custom fittings, no complicated retrofits—just quick, straightforward installation in new or existing systems.
- Precision Machined Flanges: Flange faces are machined to ASME tolerances for a perfect fit, eliminating leak points in seawater lines, even under the vibration of offshore platforms or moving vessels.
- Metal-to-Metal Seat Sealing: The NAB wedge and body seats provide a tight, bubble-tight seal in both open and closed positions, preventing leakage in critical systems like ship firewater networks and desalination brine discharge lines.
- High-Performance Packing Options: Choose between graphite or PTFE stem packing for zero fugitive emissions, with gland adjustments for easy maintenance without removing the valve from the line.
Every Jonloo C95800 gate valve is manufactured and tested to meet international codes, including:
- Design: API 600, ASME B16.34
- Face-to-Face Dimensions: ASME B16.10
- Pressure Testing: API 598 (hydrostatic shell/seat tests, pneumatic leakage tests)
- Material Standard: ASTM B148 C95800
- Marking: MSS SP-25 (traceable part numbers, material grades, and pressure ratings)
This NAB gate valve isn’t just a “marine valve”—it's a versatile workhorse built for any application where corrosion resistance is non-negotiable. Here are the top use cases where Jonloo’s valve shines:
- Seawater cooling systems for cargo ships, container vessels, and naval ships
- Ballast water control lines and bilge systems
- Shipboard firewater networks and emergency shutdown systems
- Offshore support vessels (OSVs) and platform supply vessels (PSVs)
- Seawater injection lines and utility water systems on offshore platforms
- Firewater deluge systems and safety shutdown valves
- Subsea pipeline riser connections and topside process systems
- Intake and outfall lines for reverse osmosis (RO) desalination facilities
- Brine discharge lines and chemical feed systems
- Pre-treatment filtration and backwash systems
- Cooling water intake and discharge lines for coal-fired and combined-cycle power plants
- Circulating water systems and auxiliary seawater piping
- Brine and saltwater handling systems in chemical plants
- Pulp and paper mill process water lines
- Mining operations with corrosive process fluids
With so many valve manufacturers on the market, what makes Jonloo the trusted choice for marine-grade NAB gate valves? Here’s why engineers and procurement managers worldwide choose us:
✅ 100% C95800 Material Guarantee: No substitutions, no “equivalent” alloys—every valve is forged from certified ASTM B148 C95800 nickel aluminum bronze, with full material traceability.
✅ Rigorous Quality Testing: Every valve undergoes hydrostatic shell/seat tests, pneumatic leakage tests, and dimensional checks before leaving our factory, ensuring zero defects and reliable performance.
✅ Customization Options to Fit Your Project: Need a different end connection? Gear operator instead of a handwheel? Electric or pneumatic actuation? We offer full customization to meet your exact project requirements, including:
- End connections: RF, FF, or RTJ flanges
- Actuation: Manual handwheel, gear operator, electric actuator, or pneumatic actuator
- Trim options: Custom NAB trim for high-flow or high-temperature service
- ✅ Fast Lead Times & Global Shipping: We keep a large inventory of 2-inch Class 150 C95800 gate valves in stock, with fast lead times and worldwide shipping to meet tight project deadlines.
- ✅ Expert Technical Support: Our team of valve engineers is available to help you select the right valve for your application, provide technical datasheets, and assist with compliance documentation.
- ✅ Competitive Pricing & Low Total Cost of Ownership: While NAB valves have a higher upfront cost than standard steel valves, their 10+ year service life in seawater environments means you’ll save thousands on maintenance and replacement costs over time.
A: The Jonloo 2-inch gate valve is rated for ASME Class 150 (PN20), suitable for operating pressures up to 285 PSI (19.6 bar) at ambient temperatures.
A: Absolutely. C95800 nickel aluminum bronze is the gold standard for seawater service, offering exceptional resistance to chloride corrosion and biofouling.
A: Yes. Our valves are built to meet ABS, BV, and DNV requirements, with full test reports and material certificates available for third-party inspection.
A: Yes. We offer full actuation customization, including electric, pneumatic, and gear operators, to meet your automation needs.
A: Standard stock valves ship within 7-10 business days. Customized orders typically take 2-4 weeks, depending on specifications.
Ready to upgrade your seawater or marine system with a corrosion-resistant valve that’s built to last? The Jonloo 2 Inch Class 150 C95800 Nickel Aluminum Bronze Gate Valve is the reliable, cost-effective solution you’ve been searching for.
Contact our sales team today to request a quote, download the full technical datasheet, or speak with a valve engineer about your project requirements. Email us at [email protected] or fill out our online inquiry form, and we’ll get back to you within 24 hours.
Don’t let corroded valves derail your marine project—choose Jonloo for quality, reliability, and peace of mind.
About Jonloo ValveJonloo Valve is a leading global manufacturer of industrial and marine valves, specializing in high-performance gate valves, globe valves, check valves, ball valves, and butterfly valves for the oil and gas, marine, desalination, power, and water treatment industries. With over 15 years of experience, we deliver valves that meet API, ASME, and ISO standards, supported by fast shipping and expert customer service.
