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Severe service metal-seated ball valves

Securaseal® metal-seated valves are trusted in the world's most difficult applications such as delayed coking, refining and mining. We offer a comprehensive valve package that includes advanced automation with programmable logic control (PLC) panels, fully integrated with peripheral equipment and designed for seamless remote operation, ensuring the highest level of safety and performance.

Large industrial valve with a red actuator mounted on a pipeline at a refinery or processing plant, surrounded by metal structures and equipment under a blue sky.

Body design

Close-up of a metallic industrial valve with flanges and lifting lugs, labeled "VELAN," featuring bolts and an actuator with blue piping, set against a light blue background.

Engineered for the most extreme process and environmental conditions, Velan’s Securaseal metal‑seated ball valve delivers application‑specific features tailored for the industry’s most critical services. With over 30 years of proven field performance, its precision‑machined construction body meets ASME B16.34 requirements.

Ball and seat design

Close-up of a complex mechanical component featuring interlocking blue and green cylindrical parts, bolts, and a yellow ring, with metallic surfaces and a highly detailed, industrial appearance.

The ball and seat are precision match‑lapped to ensure full‑area, tight shut‑off contact even under the most demanding conditions, delivering leak‑free performance and bi‑directional sealing with a preferred flow direction. The seats can be replaced in-line for straightforward assembly and disassembly, with no special tools required.

Ball and stem

Close-up of green and gray industrial equipment with cylindrical and rounded shapes, featuring metallic and plastic surfaces, intersecting angles, and reflections.

The sturdy one‑piece ball and stem deliver maximum strength and are ideal for services where coke fines is a concern. This design avoids the common problems of two‑piece assemblies, such as solids accumulation that can cause hysteresis (“slop”) and increased operating torque.

Stem, packing, and live-loading

Close-up 3D render of a mechanical assembly featuring bolts with red washers, a blue cylindrical component, and various metallic and colored parts, illustrating detailed engineering design.

The robust, blowout‑proof stem features a clear open/closed position indicator and remains fully guided throughout operation. Advanced stem‑packing technology ensures a low‑emission stem seal. Live-loaded packing flange and improved stem seal design maintains packing sealing performance over the life of the valve.

PressureASME 150-4500
SizeNPS 1/2-36 (DN 15-900)
Tests and Design StandardsB16.34, API 608, MSS SP 61, API 598, Class V, Class VI, API 6D, LP gas seat.
Fugitive EmissionsDual-qualified to API 641 and ISO 15848-1 fugitive emissions requirements. All graphite packings are qualified to API 622 requirements.
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