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J-VALVES
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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