Company News

Sedelon pays much attention on quality control in products, and all valves are designed and tested according…

Sedelon pays much attention on quality control in products, and all valves are designed and tested according…

Sedelon pays much attention on quality control in products, and all valves are designed and tested according…

Sedelon pays much attention on quality control in products, and all valves are designed and tested according…

A pressure seal gate valve uses line pressure to tighten a self-energizing gasket, so the joint seals tighter as steam pressure rises; a bolted bonnet clamps the joint with studs and needs ever-larger studs at high pressure. This guide compares the two designs on sealing, pressure class, temperature, maintenance and cost, and how to specify the right gate valve….

API 6D and API 608 ball valves look alike but serve different worlds. API 6D governs pipeline valves with butt-weld ends and full mill certification; API 608 covers refinery and process-plant ball valves, usually flanged in smaller bores. This guide compares end design, pressure class, fire safety, sour service and documentation, and how to choose the right standard….

A check valve stops backflow with no actuator. A swing check uses a hinged clapper for very low pressure drop on horizontal, large-bore lines; a lift check uses a guided disc that seats squarely for tighter, faster shut-off in vertical and high-velocity runs. This guide compares the two on sealing, pressure drop, orientation and water hammer risk….

Triple offset or double offset butterfly valve? The deciding question is whether the service needs fully metal-seated, zero-leakage, fire-safe isolation, or a resilient-seated throttling valve that is cheaper to run. This guide explains how the offsets work, where each design wins, and how to specify the right one for severe-service lines.
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Selecting a cryogenic ball valve for LNG and low-temperature service comes down to three things: an extended bonnet that lifts the stem seal above the cold zone, low-temperature materials that resist brittle fracture, and body-cavity relief for trapped liquid. This guide covers the design features, materials and standards that matter.
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Choosing between a trunnion mounted ball valve and a floating ball valve is one of the most common decisions pipeline engineers face when designing large-bore, high-pressure isolation systems. Both valves use a rotating ball to start or stop flow, but the way the ball is supported determines pressure rating, torque, seat wear and line size. At Sedelon, a valve manufacturer since 1998 with API 6D, API 607, API 6FA, ISO 9001 and ISO 15848-1 certifications, we guide EPC contractors and project engineers through this trade-off. In this guide, we compare the two designs and explain which one fits severe-service pipelines….

High Temperature Ball Valve, as key chemical plant valves, is widely used for hazardous pipelines….

As a professional manufacturer, Sedelon offers customized extended stem valve solutions with anti-corrosion structures….

As core high temperature alloy steel valve options, WC6 valve and WC9 alloy valve are widely‑adopted power station alloy valve for steam and hydrocracking pipelines….

The wafer api 609 butterfly valve enjoys great cost‑performance among connection types. Global EPCs and buyers need a trustworthy api 609 butterfly valve supplier and api 609 butterfly valve manufacturer….

A practical guide for B2B buyers and plant engineers covering top entry ball valve design, in-line maintenance, material selection, standards and sourcing checklist….