Precision Investment Casting Valve Body​

Product Overview

This near-net-shape casting process eliminates the need for extensive machining, preserving material integrity while achieving complex internal geometries essential for optimal fluid flow. Our valve bodies meet API 6D and ASME B16.34 standards, ensuring compatibility with global piping systems handling liquids, gases, and slurries at extreme pressures and temperatures. From oil and gas pipelines to chemical processing plants, these precision castings deliver reliable flow control with minimal pressure drop.

Product Features

Dimensional Accuracy: Investment casting achieves tolerances of ±0.05 mm on critical sealing surfaces, with internal flow paths machined to Ra 1.6 μm finish, reducing turbulence and improving flow efficiency by 8–12% compared to sand-cast alternatives.

Material Versatility: Available in 316 stainless steel, carbon steel (WCB), and alloy steel (WC6), with material-specific properties: 316 offers 10,000+ ppm chloride resistance, while WC6 provides creep strength up to 593°C.

Pressure Rating: Designed for working pressures from 150 psi to 2,500 psi (ANSI Class 150 to 2500), with burst pressure testing conducted at 4x the rated pressure to ensure safety margins.

Leak Prevention: Integral flange faces machined to ANSI B16.5 standards with precise bolt hole positioning (±0.1 mm) ensure gasket compression uniformity, achieving bubble-tight seals (≤1x10⁻⁶ std cc/s He).

Applications

These valve bodies serve across critical fluid control systems:

Oil & Gas: Gate valve bodies for upstream production and pipeline transmission, handling crude oil and natural gas with H₂S content.

Chemical Processing: Globe valve housings for corrosive media transfer, including acids, alkalis, and solvent-based solutions.

Power Generation: Check valve bodies in steam systems, withstanding temperatures up to 540°C in coal-fired and nuclear power plants.

Water & Wastewater: Butterfly valve casings for municipal water treatment, featuring corrosion-resistant linings for chlorine-rich environments.

FAQ

Q: What testing protocols ensure valve body integrity?

A: Each valve body undergoes hydrostatic pressure testing at 1.5x rated working pressure, dye penetrant inspection for surface defects, and PMI (Positive Material Identification) to verify alloy composition.

Q: Can you produce valve bodies with custom bore sizes?

A: Yes, our investment casting process accommodates bore sizes from 1/2 inch to 24 inches (DN15 to DN600), with custom port configurations (flanged, threaded, weld-end) available to match specific piping requirements.

Q: How does investment casting improve valve performance?

A: The process creates smoother internal flow paths with no draft angles, reducing pressure drop by 15–20% compared to machined forgings, while maintaining material density for superior pressure retention.