Needle valves made of special alloy materials are mainly used in working conditions that require resistance to strong corrosion, ultra-high temperature, ultra-high pressure, or other special requirements. Special steel materials include 2205/F51, 2507/F53, F55/ZERON100, Monel 400 alloy, C-276, INCOLOY825, Inconel 625, INCOLOY800H, Inconel 600, SS347H, SS310, SS309, etc.

1. Hastelloy needle valves

Hastelloy is a representative of nickel-based corrosion-resistant alloys, divided into Series B (e.g., B2) and Series C (e.g., C276), with excellent resistance to strong corrosion.

2. Monel needle valves

Monel is a nickel-copper alloy (e.g., Monel 400), which performs excellently in fluoride-containing media and low-temperature environments.

3. Inconel needle valves

Inconel alloys (e.g., Inconel 600, 625) are renowned for their high-temperature resistance and oxidation resistance.

4. Duplex Stainless Steel needle valves

Duplex stainless steels (e.g., 2205, 2507) combine austenitic and ferritic structures, featuring both strength and corrosion resistance.

5. Titanium alloy needle valves

Titanium alloys (e.g., Grade 2) are known for their light weight, high corrosion resistance, and biocompatibility.

6. Other special alloy needle valves