17 Jul,2024

Quick Answer A pressure seal gate valve is designed for high-pressure, high-temperature use, where internal pressure enhances its sealing. Key components include a pressure seal bonnet, gate, stem, and durable body. It offers minimal fluid resistance, effective sealing, and bidirectional flow, but has drawbacks like high friction and large size. It is crucial in power […]

16 Jul,2024

Quick Answer China's industrial growth has fueled demand for orbit plug valves, with PANS emerging as the top specialist, offering high-capacity, customized designs with international certifications. Dago serves domestic state-owned projects, while Dervos targets lower-pressure applications. Shinjo Valve and NSW round out the top five but lack the expertise and track record of PANS for […]

13 Jul,2024

Quick Answer Orbit plug valves are compact, eccentric rotating valves that provide tight bi-directional shutoff and precise flow regulation in demanding industrial applications. Their unique cam-following design requires only a 90-degree rotation to operate, handling pressures over 10,000 psi and high temperatures. Used across oil and gas, chemical, power generation, food and beverage, and pulp […]

12 Jul,2024

Quick Answer Inverted pressure balance plug valves ensure secure isolation and flow control in high-pressure oil and gas applications, sealing tighter as line pressure rises and protecting seats from debris via an inverted design. They offer reliable, bidirectional performance up to ANSI Class 4500, though with higher costs and size limitations. When handling volatile gases, […]

10 Jul,2024

Quick Answer Sleeved plug valves use a replaceable cylindrical sleeve to protect the valve body from wear and corrosion, extending service life in demanding applications like abrasive slurries and corrosive chemicals. Unlike lined valves, the sleeve covers the full flow path and can be replaced without removing the valve. PANS is a leading manufacturer of […]

09 Jul,2024

Quick Answer Eccentric plug valves use an eccentrically pivoting cylinder for precise flow modulation across a wide control range, ideal for throttling in steam, water, oil, and chemical services. Butterfly valves, with a rotating vane, offer higher capacity and efficient on/off control for larger pipelines. Choosing between them depends on the need for precision versus […]

08 Jul,2024

Quick Answer Eccentric plug valves use an off-center rotating plug for precise flow throttling and tight shutoff, even after wear. They handle bi-directional flow and various media, including steam, liquids, and gases. Common applications include flow modulation, compressor anti-surge control, and pigging. Their adjustable design compensates for seat wear, ensuring reliable sealing and making them […]

07 Jul,2024

Quick Answer China's industrial valve market is growing 12-15% annually, driven by infrastructure and exports. This article profiles five top plug valve manufacturers: PANS, AFC Valve, Shanghai Huixuan, SAFVAL, and Convista. These companies offer customized, high-quality solutions for diverse applications, with innovations like smart monitoring, meeting international standards for global projects. Industrial valves remain crucial […]

06 Jul,2024

Quick Answer Plug valves need re-lubrication every 6-18 months to reduce friction and prevent wear. Key lubrication points include grease fittings and plug seal surfaces. The process involves applying compatible grease, cycling the valve to distribute it, and inspecting for smooth operation and tight shutoff. Proper maintenance extends valve life and prevents leaks. Plug valves […]