Best Materials for Custom Trunnion Mounted Ball Valves in Corrosive Environments | Duplex Stainless Steel, Inconel Alloys, and Hastelloy
For chlorine-containing environments, choose 2205 duplex stainless steel with a PREN over 35; for high-temperature sulfur-containing environments, use Inconel 625 with over 58% nickel; for strong acids, pair with Hastelloy C-276. During manufacturing, the interpass temperature of the weld must be controlled below 150°C to prevent intergranular corrosion. Duplex Stainless Steel Mainly comprising UNS S32205 […]
How to Choose the Right Custom Trunnion Mounted Ball Valve | Size, Pressure Class, Application
Sizes are customized from NPS 2 to 48; full port structure is mandatory if pigging operations are required; Pressure ratings strictly adapt from Class 150 to 2500; Applications with sour media must specify sulfur-resistant materials compliant with the NACE MR0175 standard. During factory acceptance, a hydrostatic test at 1.5 times the design pressure must be […]
How to Improve Trunnion Mounted Ball Valve Durability | Surface Treatment, Sealing Technology, Alloy Materials
The sphere surface needs to be sprayed with tungsten carbide to a thickness of 0.05 mm, achieving a hardness exceeding 68 HRC to resist wear; The seal adopts a dual PEEK and metal structure, requiring regular maintenance by injecting grease through the injection valve; Under highly corrosive conditions, core internal components should be directly replaced […]
How to Choose a Trunnion Mounted Ball Valve for Industrial Pipelines | Pressure Rating, Body Material, End Connection
Pressure ratings are typically selected between Class 150 and 2500; Conventional body material is WCB carbon steel, while CF8M stainless steel is specified for corrosive media; BW (Butt Weld) ends are recommended for high pressure, and RF (Raised Face) flanges for low pressure. During installation and mating, flange bolts must be tightened in a diagonal […]
What’s the Difference Between Soft Seat and Metal Seat Side Entry Ball Valves | Temperature Range, Sealing Performance, Wear Resistance
Soft-seated side-entry ball valves (such as PTFE) are suitable for temperatures below 200°C and can achieve Class VI zero leakage, but they have poor wear resistance. The pipeline must be purged before operation to prevent particles from scratching the valve seat. Metal-seated valves (such as those with tungsten carbide coatings) can withstand high temperatures up […]
How to Select Materials for Custom Side Entry Ball Valves | Carbon Steel, Stainless Steel, Duplex Steel
Carbon steel (WCB) is suitable for water and oil at temperatures from -29 to 425°C; Stainless steel (316) resists strong acids and withstands high temperatures up to 600°C; Duplex steel (2205) features a Pitting Resistance Equivalent Number (PREN) > 32, specializing in high-chloride environments. Carbon Steel WCB cast steel and A105 forged steel provide a […]
How to Improve Side Entry Ball Valve Reliability in Pipelines | Sealing System, Stem Design, Corrosion Protection
The seal utilizes a PEEK bi-directional valve seat resistant to high temperatures up to 260°C to ensure zero leakage; The stem features an anti-blowout stepped design and is equipped with multi-stage O-rings to prevent leakage; The surfaces of core components undergo 50-micron-thick Electroless Nickel Plating (ENP) or Inconel alloy weld overlay for corrosion resistance, which, […]
What’s the Difference Between Forged and Cast Side Entry Ball Valves | Strength, Pressure Capacity, Durability
Forged steel side-entry ball valves are forged under high pressure, resulting in a dense internal structure without porosity, extremely high strength, the ability to withstand high pressures of Class 2500 (approximately 42 MPa) and above, and exceptional durability. Cast steel ball valves are formed by pouring molten steel. They are prone to internal shrinkage cavities […]
How to Choose a Side Entry Ball Valve for Industrial Pipelines | Pressure Rating, Body Material, End Connection
First, determine the pressure rating, selecting from Class 150 to 2500 based on the operating conditions; Second, determine the material, conventionally using WCB carbon steel, and CF8M stainless steel for corrosive media; ly, select the end connection, utilizing RF flanges for low pressure, and BW butt-welding for high pressure to prevent leakage. Pressure Rating According […]
What is the difference between a soft seat and a metal seated ball valve?
It was a conversation that brought together two minds, mine from CARILO and the brilliant folks at one of oil&gas companies. In the heart of it was a cautionary tale – a reminder that even the most seasoned in the valve game can sometimes miss a beat. You see, our client, driven by their impressive […]
