Entries by Perfect Manufacturing

What metal material can be used for valve seal?

The valve seal is the key part to determine valve performance. The other factors like corrosion, friction, flash, erosion, oxidation, and ect should be considered when selecting sealing surface material. Valve seals are usually divided into two categories, one is a soft seal such as rubber (including butene rubber, fluoro rubber, etc.), plastic (PTFE, Nylon, […]

Gate valves used for nuclear plant

Nuclear valve refers to the valves used in the Nuclear Island (NI), Conventional Island (CI) and auxiliary facilities, the balance of Nuclear Island (BOP) system of the power plant. These valves can be divided into class Ⅰ, Ⅱ, Ⅲ, non-nuclear according to its security requirements in sequence. Valves are the most used control equipment transporting […]

Which material is better for industrial valves body? A105 or WCB?

The common material of valve body includes carbon steel, low-temperature carbon steel (ASTM A352 LCB/LCC), alloy steel (WC6, WC9), Austenitic stainless steel(ASTM A351 CF8), cast copper-alloy titanium alloy, aluminum alloy, etc., of which carbon steel is the most widely used body material. ASTM A216 WCA, WCB and WCC are suitable for medium and high-pressure valves […]

Effect of alloy element Mo in steel

The element Molybdenum (Mo) is a strong carbide and was discovered in 1782 by Swede chemist HjelmPJ. It usually exists in alloy steels in amounts of less than 1%. Chromium-molybdenum steel can replace chromium-nickel steel sometimes to produce some important working parts such as high-pressure valves, pressure vessels, and has been widely used in tempered […]

What’s the PEEK material used for?

Polyetheretherketone (PEEK) is a high-performance polymer (HPP) invented in the United Kingdom in the late 1970s. It is regarded as one of the six major specialty engineering plastics along with polyphenylene sulfide (PPS), polysulfone (PSU), polyimide (PI), polyaromatic ester (PAR) and liquid crystal polymer (LCP). PEEK offers excellent mechanical properties compared with other special engineering […]