API607 Valvola a sfera eccentrica montata lateralmente PBQ940H-10C
Worm Gear Eccentric Ball Valve; Top-Entry Eccentric Ball Valve Design Standards:
Design and manufacturing standards conform to: GB12237—1989, ASME B16.34, API 6D General Purpose Valve Flanges and Butt-Welded Steel Ball Valves
Structural length conforms to: GB12221, ASME B16.10;
Connection end dimensions conform to: JB/T79, GB9113, HG20592; ASME.B-16.5A, ASME B16.25;
Inspection and testing conform to: JB/T 9092, GB/T13927-1992, API 598; General Purpose Valve Pressure Test
Fire protection design conforms to: API 607;
API607 Valvola a sfera eccentrica montata lateralmente PBQ940H-10C
Worm gear eccentric ball valves are categorized by application into six major series: general-purpose valves, pipeline valves, slurry-specific valves, gas-specific valves, petrochemical-specific valves, and pulverized coal injection-specific valves. They are available in manual, pneumatic, and electric operation, with eight pressure ratings (PN0.25～10.0Mpa) and hundreds of specifications (40～1000). These valves are a replacement for gate valves, globe valves, Y-type valves, and ball valves in the petroleum, chimico, metallurgical, power, and gas industries. Currently, they are widely used in pulverized coal injection in the steel industry, slurry, mother liquor, and alumina powder conveying in the alumina industry, idraulico (or dry) ash removal in the power industry, and in the petrochemical and gas industries.
API607 Valvola a sfera eccentrica montata lateralmente PBQ940H-10C
General Purpose Valve: Ragionevolmente progettato e compatto nella struttura, presenta una bassa resistenza al flusso, buone prestazioni di tenuta, e funzionamento facile e flessibile. It is particularly suitable for low-pressure pipelines carrying media such as water, liquami, vapore, e polpa. Può essere equipaggiato con dispositivi elettrici o pneumatici per il funzionamento automatizzato a distanza. (Per fluidi non corrosivi come l'acqua, vapore, liquami, polpa, e liquame)
Pulverized Coal Injection Valve: Un dispositivo ideale per controllare il trasporto solido di gas carichi di polveri e fluidi particolati, come l’iniezione di carbone polverizzato. It is widely used in various pipeline controls in blast furnace pulverized coal injection, sistemi di polverizzazione, e sistemi di depolverazione nel settore metallurgico, lavorazione dei minerali, e processi di produzione di energia. Adotta una struttura diretta, garantendo un flusso regolare e prevenendo l'accumulo e il blocco della cenere. La coppia di guarnizioni è realizzata in lega di Co-Cr-W e viene sottoposta a uno speciale trattamento termico, rendendo la valvola resistente all’erosione e all’usura. La superficie sferica eccentrica della valvola ha prestazioni di compensazione automatica; regolando i bulloni sull'ingranaggio a vite senza fine, la coppia di guarnizioni può ancora ottenere un effetto di sigillatura anche con un certo grado di usura. (Per gas carichi di polvere e fluidi particolati)
Worm Gear Eccentric Ball Valve, Top-Entry Eccentric Ball Valve Applications:
Petrochemical Industry Special: Designed for high-pressure, high-temperature media in the petrochemical industry, filled with flammable, explosive, and easily corrosive media such as weak acids and alkalis. Features include excellent sealing, corrosion resistance, easy opening and closing, and automatic removal of scale from the valve surface. Suitable for transporting crude oil, heavy oil, and other media, as well as in petroleum cracking, food processing, and other processes. (Petroleum, gas naturale, coal gas, water, ecc.)
Blast Furnace Gas and Gas Special: The sealing pair is made of Cr-Mn-Si hard alloy, which is fire-resistant, explosion-proof, and anti-static. The sealing pair can withstand high temperatures up to 560℃. Its corrosion resistance and anti-galling ability are more than 6 times that of stainless steel sealing pairs. It is particularly suitable for use in pipeline transportation and pressurization stations for coal gas, coke oven gas, water gas, liquefied gas, and natural gas. (Blast furnace gas, gas naturale, dust-laden gas, ecc.) For slurry mixed fluids: The ideal process valve for conveying two-phase mixed fluid media such as easily precipitated, scaled, or crystallized slurries, slurry ash, ecc. It can overcome scale obstacles to achieve smooth closure. It features a novel structure and unique design, offering advantages such as high efficiency and energy saving, good wear resistance, reliable sealing, easy operation, rapid opening and closing, and long service life. (Conveying process slurries, slurry ash, ecc. containing particulate matter) For pipelines: A straight-through hemispherical valve with no reduction in diameter. The valve body channel connects to the pipeline in a straight line with the same cross-sectional area, resulting in less resistance than a reduced diameter valve. Full opening and full closing can be achieved with just a 90-degree rotation, facilitating long-distance pipeline transportation control. (Pulverized coal injection and gas transportation)
The worm gear eccentric hemispherical valve, specifically the top-mounted eccentric hemispherical valve, offers the following advantages:
1. Compact side-mounted structure and lightweight, suitable for applications requiring limited installation space.
2. Bassa resistenza ai fluidi; its resistance coefficient is equal to that of a pipe section of the same length.
3. Simple structure, piccola dimensione, and light weight.
4. Cutting function; it can cut off impurities (twigs, textile bags, ecc.) in the medium when closed.
5. Tight and reliable; the sealing surface material of the ball valve widely uses plastics, providing excellent sealing performance, and it is also widely used in vacuum systems.
6. Convenient operation; rapid opening and closing; only a 90° rotation is needed from fully open to fully closed, facilitating remote control.
7. Easy maintenance; the ball valve has a simple structure, and the sealing rings are generally movable, making disassembly and replacement convenient.
8. When fully open or fully closed, the sealing surfaces of the ball and seat are isolated from the medium, preventing erosion of the valve sealing surfaces during medium flow.
9. It has a wide range of applications, with pipe diameters ranging from a few millimeters to several meters, and can be used in applications ranging from high vacuum to high pressure. When the sphere rotates 90 gradi, the entire inlet and outlet should present a spherical surface, thereby cutting off the flow.
