Materials
Valve Material Specifications – Multi Valve Corp
The selection of valve materials is critical to ensuring safe, reliable, and long‑term performance across demanding industrial applications. At Multi Valve Corp, we engineer our valves with materials chosen for mechanical strength and corrosion resistance, tailored to the requirements of oil & gas, chemical processing, power generation, and water treatment industries.
Strength Considerations
High Pressure Applications – Forged steel and high‑alloy steels provide superior tensile strength and grain structure, ensuring safety under extreme operating conditions.
Standard Service – Cast steel offers robust performance for general industrial use.
Lower Pressure Systems – Cast iron or carbon steel may be sufficient where mechanical stress is moderate.
Corrosion Resistance
Chemical Environments – Stainless steel delivers superior resistance against aggressive fluids, high temperatures, and corrosive atmospheres.
Process Fluid Impact – Internal corrosion from fluid composition often poses greater risk than external rust, making material choice critical.
Environmental Factors – Operating temperature, pressure, and exposure conditions are evaluated to ensure optimal material selection.
Common Valve Materials
Our valves are manufactured from a wide range of materials to suit different applications:
Cast Steel – high strength for standard service.
Forged Steel – superior grain structure for high‑pressure safety.
Cast Iron – economical option for low‑pressure systems.
Stainless Steel 304 – corrosion resistance for general chemical service.
Stainless Steel 316 – enhanced resistance for offshore and aggressive media.
Stainless Steel 347 – high‑temperature stability.
WC6, WC9, WC12 – alloy steels for elevated temperature service.
Titanium – lightweight, excellent corrosion resistance.
Hastelloy – superior chemical resistance.
Inconel – high strength under extreme heat and pressure.
Monel – excellent resistance to seawater and acids.
Cu‑Ni – ideal for marine applications.
API 600 Chart
| Trim | Seat | Disk | Backseat | Stem |
|---|---|---|---|---|
| 1 | 410 | 410 | 410 | 410 |
| 2 | 304 | 304 | 304 | 304 |
| 3 | 310 | 310 | 310 | 310 |
| 4 | Hard 410 | 410 | 410 | 410 |
| 5 | Stellite | Stellite | 410 | 410 |
| 6 | Cu‑Ni | Cu‑Ni | 410 | 410 |
| 7 | Hard 410 | Hard 410 | 410 | 410 |
| 8 | Stellite | 410 | 410 | 410 |
| 9 | Monel | Monel | Monel | Monel |
| 10 | 316 | 316 | 316 | 316 |
| 11 | Stellite | Monel | Monel | Monel |