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C95800 1"150LB Floating Ball Valve

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ASTM B148 C95800 Nickel-Aluminum Bronze Floating Ball Valve (1″ 150LB) is a high-performance floating ball valve engineered for reliable shut-off and flow control in seawater, marine environments, chemical corrosion and abrasive service conditions.Featuring a precision-cast valve body made from ASTM B148 C95800 (UNS C95800) nickel-aluminum bronze, this valve delivers exceptional seawater corrosion resistance, cavitation resistance, biofouling resistance and wear performance, far superior to stainless steel and carbon steel materials.With its compact 1-inch small bore size and 150LB low-pressure class, it boasts a simple and compact structure, making it economical and practical.It is widely applied in harsh corrosive environments including offshore platforms, marine systems, seawater desalination plants, coastal power plants, chemical pump and valve packages, as well as subsea equipment.
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Structural Features

  • C95800 Nickel‑Aluminum Bronze Material:The valve body is precision‑cast from ASTM B148 C95800 (CuAl10Fe5Ni5), containing 4.0–5.0% nickel, 4.0–5.0% iron, and 9.0–11.0% aluminum. It forms a dense aluminum oxide protective film, with a seawater corrosion rate only 1/100 that of carbon steel, and cavitation resistance more than 10 times higher than stainless steel.

  • Two‑Piece Split Design:The valve consists of a main body and bonnet, featuring a simple, compact structure, light weight, low manufacturing and assembly costs, and easy maintenance.

  • Floating Ball Self‑Sealing:The ball floats freely under medium pressure and tightly contacts the downstream seat to achieve self‑energized sealing. The higher the pressure, the more reliable the seal, with a simple structure and sensitive response.

  • Full Bore Design:The 1″ full bore flow passage matches the pipe inner diameter, delivering extremely low pressure drop, high flow efficiency, and allows pig passage.

  • Flanged Connection:RF (Raised Face) flanges comply with ASME B16.5 Class 150, ensuring compatibility with global standard piping systems.

  • Fire‑Safe Design:In accordance with API 607, if PTFE/RPTFE seals burn out, a secondary metal seal forms between the metal ball and seat ring to prevent medium leakage under fire conditions.

  • Anti‑Static Device:A conductive spring is installed between the stem, ball, and body to ensure continuous static discharge, suitable for flammable and explosive media such as oil and gas.

  • Blowout‑Proof Stem Design:A shoulder limit structure at the stem bottom prevents stem ejection under abnormal internal pressure, ensuring operational safety.

  • Excellent Erosion and Abrasion Resistance:Nickel‑aluminum bronze offers high hardness and good toughness, resisting sand‑bearing seawater, mud, and high‑velocity gas scouring. Service life is 5–10 times longer than rubber‑lined valves.

  • Compact and Lightweight:The 1‑inch small‑bore design provides a compact size and light weight, ideal for dense installation in ship compartments, offshore platform modules, and subsea equipment.


Technical Specifications

  • Nominal Size: 1″ (DN25)

  • Pressure Class: 150LB (PN20)

  • Temperature Range: -29℃ to +425℃

  • Body / Bonnet: ASTM B148 C95800 (Nickel‑Aluminum Bronze); optional C95500 (Nickel‑Free Economical Aluminum Bronze) or C95200 (Low‑Nickel Aluminum Bronze)

  • Ball: Solid C95800 or C95800 with hard chrome / ENP surface treatment; optional Monel K500 or 17‑4PH Stainless Steel

  • Stem: C95800, Monel K500, or 17‑4PH Precipitation Hardening Stainless Steel

  • Seat Seal:PTFE (-196℃ ~ 150℃).RPTFE (Glass Fiber Reinforced PTFE, -196℃ ~ 180℃).PPL (Polyphenylene, -29℃ ~ 280℃).Metal Seal + Flexible Graphite (-29℃ ~ 400℃)

  • Packing: PTFE V‑rings or Flexible Graphite

  • Gasket: Flexible Graphite Stainless Steel Spiral Wound Gasket or PTFE Envelope Gasket

  • Bolts: Monel 400/500 or 316 Stainless Steel (seawater corrosion resistant)

  • End Connection: Flanged (RF, ASME B16.5 Class 150); optional NPT Female Thread, SW Socket Weld, or BW Butt Weld Ends

  • Operation: Manual (Lever with Locking Hole); optional Pneumatic (Single / Double Acting) or Electric Actuator

  • Design Standards: ASME B16.34, API 608, API 607

  • Testing Standard: API 598

  • Face‑to‑Face: Complies with ASME B16.10


Applications

  • Offshore Platform Engineering:Used for corrosion‑resistant shut‑off in seawater cooling, fire water, ballast water, and bilge water systems. C95800 resists marine atmospheric and splash zone corrosion.

  • Marine Systems:Key valves for main/auxiliary engine seawater cooling, desulfurization scrubbing, ballast water treatment, and fire fighting systems. Anti‑biofouling properties reduce maintenance.

  • Seawater Desalination:Applied in intake lines and high‑pressure pump ports of RO and MSF systems, resisting high‑salinity seawater and sand erosion.

  • Coastal Power Plants:Corrosion‑resistant valves for circulating cooling water, condensers, and seawater FGD systems, replacing rubber‑lined valves to extend service life.

  • Chemical Pumps & Valves:Controls highly corrosive media in chlor‑alkali, salt chemical, and hydrometallurgical industries. C95800 resists chloride ion, acid, and alkali corrosion.

  • Subsea Equipment:Used in subsea manifolds, Christmas trees, and valve actuator subsea pressure housings and fluid controls, resisting external seawater pressure and internal medium corrosion.


Advantages & Value

  • Superior Seawater Corrosion Resistance:C95800 nickel‑aluminum bronze has a seawater corrosion rate <0.025 mm/year, two orders of magnitude lower than carbon steel, with cavitation resistance 10 times higher than 316 stainless steel. Design service life exceeds 30 years in marine environments.

  • Natural Anti‑Biofouling Performance:Copper alloy ion release inhibits marine organism attachment, reducing cleaning and maintenance frequency by over 70% and lowering ship downtime and platform maintenance costs.

  • Extremely Long Erosion‑Resistant Life:Hardness HB 140–190, resistant to sand‑bearing seawater and mud scouring. Service life in pump and valve systems is 5–10 times longer than rubber‑lined solutions.

  • Economy & Reliability Combined:C95800 casting cost is lower than Monel and titanium alloys, with outstanding cost‑effectiveness at Class 150 low pressure, suitable for large‑scale offshore engineering deployment.

  • Global Standard Compatibility:ASME B16.5 Class 150 flange dimensions fully match global standard piping. The ASTM B148 material standard is internationally recognized, ensuring convenient spare parts procurement.

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