316L Stainless Steel Valve Stem & Metering Pump Valve Core Precision Casting

316L Stainless Steel Valve Stem & Metering Pump Valve Core Precision Casting

When precision fluid control is critical, the quality of your valve stem and valve core components makes all the difference. Our 316L stainless steel valve stems and metering pump valve core castings are manufactured using the lost-wax investment casting process, delivering exceptional dimensional accuracy, surface integrity, and corrosion resistance — essential for reliable sealing and long service life in demanding chemical, pharmaceutical, and industrial fluid systems.

Material Properties

• Grade: AISI 316L (equivalent to 1.4404 / SUS316L)
• Tensile Strength: ≥485 MPa
• Yield Strength: ≥170 MPa
• Hardness: ≤217 HB
• Carbon Content: ≤0.03% — low carbon grade for superior weld corrosion resistance
• Molybdenum Content: 2–3% — significantly enhances resistance to chloride pitting and crevice corrosion
• Temperature Range: Suitable for cryogenic to 870°C service
• Biocompatibility: Suitable for pharmaceutical, food-grade, and medical applications

Casting Process & Quality

• Process: Lost-wax investment casting for precise near-net-shape geometry
• Dimensional Tolerance: CT6 per ISO 8062
• Surface Roughness: Ra 1.6–3.2 μm (post-polishing available)
• Post-processing options: CNC turning/grinding, lapping, electropolishing, passivation
• Sealing surface finish: Mirror polishing available for critical sealing faces
• Quality inspection: Dimensional check, dye penetrant testing (PT), hardness testing available

Key Features

• Superior corrosion resistance: 316L’s molybdenum content provides outstanding resistance to chlorides, acids, and process chemicals
• Precise sealing geometry: Tight tolerances on seating surfaces ensure leak-free valve performance
• Low carbon grade: Eliminates sensitization risk in welded assemblies
• Excellent wear resistance: Maintains dimensional integrity under repeated actuation cycles
• Custom configurations: Stem diameter, thread form, seat angle, port geometry, and surface finish per your specifications

Applications

• Metering pump valve cores and seats
• Gate, globe, and needle valve stems
• Chemical dosing and injection systems
• Pharmaceutical and biotech process valves
• Food and beverage flow control components
• Seawater and marine fluid systems
• High-purity water treatment equipment

Custom Order Process

1. Submit your drawing (STEP, DXF, DWG, or PDF) or sample part
2. Receive detailed quotation within 24–48 hours
3. Prototype approval before mass production
4. Lead time: typically 30 days depending on complexity and quantity

Ready to discuss your requirements? Contact us for a custom quote — our engineering team is ready to assist.