Precision Cast Stainless Steel Valve Parts​

Product Overview

These components—including valve trim, stems, discs, and seats—are engineered to maintain tight tolerances and surface finishes essential for leak-free operation in demanding environments. Our casting process meets API 600 and BS 5351 standards, ensuring compatibility with globe, gate, and check valves across oil, gas, chemical, and power industries. By eliminating porosity and achieving uniform material structure, these precision cast parts deliver extended service life even in abrasive or corrosive media.

Product Features

Material Performance: Constructed from 316/316L, 304/304L, and CF8M stainless steels, with 316L offering excellent pitting resistance (PREN ≥ 40) and CF8M providing enhanced strength at temperatures up to 650°C.

Dimensional Consistency: Investment casting achieves tolerances of ±0.03 mm on sealing surfaces, with valve seats machined to Ra 0.4 μm finish for bubble-tight shutoff (≤0.1 cc/min per ANSI FCI 70-2).

Structural Integrity: Vacuum-assisted casting minimizes porosity to <1% by volume, verified through X-ray inspection, ensuring resistance to fatigue failure under cyclic pressure loads.

Wear Resistance: Optional hardfacing with Stellite 6 (HRC 40–45) on valve discs and seats extends service life by 3–5x in abrasive slurry applications compared to uncoated stainless steel.

Applications

These precision components are integral to valve performance in key industries:

Upstream Oil & Gas: Valve trim for wellhead choke valves, resisting erosion from sand-laden hydrocarbons at pressures up to 15,000 psi.

Chemical Processing: Diaphragm valve stems and discs handling corrosive acids (sulfuric, nitric) and caustic solutions.

Power Generation: Check valve discs for boiler feedwater systems, withstanding high-temperature water (280°C) and pressure cycling.

Marine & Offshore: Ball valve seats for seawater intake systems, featuring enhanced corrosion resistance to prevent biofouling and pitting.

FAQ

Q: How do precision cast valve parts compare to machined forgings?

A: Investment casting reduces material waste by 60–70% compared to forging, while achieving complex geometries (e.g., multi-port trim) that would require expensive multi-axis machining.

Q: What testing ensures valve part reliability?

A: All parts undergo pressure testing, hardness verification (Rockwell/C Brinell), and microstructural analysis to confirm grain structure and absence of harmful inclusions.

Q: Can you produce custom valve parts for obsolete valve models?

A: Yes, using reverse engineering from sample parts or legacy drawings, we can recreate discontinued valve components with 99.9% dimensional accuracy to extend valve service life.