Company introduction

  • USELL, headquartered in British Columbia, Canada
  • Brings together a group of excellent talents with rich experience and active innovation
  • Dedicated to the research, development, and production of fluid valve products, we provide supporting technical solutions

USELL, headquartered in British Columbia, Canada, is a service-oriented enterprise co-founded by a group of professionals with years of industry experience. It possesses profound technical expertise in the field of fluid control.

Our technical service team has long been dedicated to multiple high-end industrial fields, including power generation, microelectronics manufacturing, high-purity chemical production, petrochemicals, biopharmaceuticals, as well as the food and beverage industry. Regardless of your industry, we deeply understand the crucial role of fluid valves in product processes and system operations. Therefore, we closely focus on your specific needs and tailor-make the most suitable fluid valve products and supporting technical solutions for you, helping you enhance system efficiency and ensure production safety.

We always adhere to the principle of listening first - earnestly understanding your actual working conditions, technical difficulties, and usage habits. Based on this, we propose a variety of feasible and high-quality product options for you to make your own judgment and choice. We advocate a transparent and open spirit of collaboration, and establish long-term mutual trust with customers with a sincere and professional attitude. More importantly, we advocate the concept of "cooperation and sharing", viewing every project as an opportunity for mutual growth, and working together with customers to discover and create shared value.

Creating Shared Value --- Creating and sharing value with you.


Electricity and energy

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Electricity and energy

1.1 Ultra-supercritical thermal power

Valve requirements: high-temperature and high-pressure valves (globe valves, gate valves, regulating valves, safety valves) on the main steam and reheat steam pipelines.

Technical challenges: Withstand high temperatures ranging from 620 to 650℃ and pressures exceeding 35MPa, while preventing creep and thermal fatigue.

Typical applications: main steam isolation at boiler outlet, temperature and pressure reduction in turbine bypass, and minimum flow regulation of feedwater pump.


1.2 Solar thermal power generation (molten salt tower/trough)

Valve requirements: molten salt globe valve, molten salt regulating valve, molten salt check valve, molten salt safety valve.

Technical challenges: addressing the corrosiveness of molten salt at 565℃, low-temperature solidification (melting point around 220℃), and thermal stress due to large temperature differences.

Typical applications: Inlet and outlet of cold/hot molten salt storage tanks, circulation pipelines of heat absorbers, and shut-off valves on the molten salt side of steam generators.


1.3 Compressed Air Energy Storage (CAES)

Valve requirements: large-diameter (DN800 and above) electric/pneumatic ball valves, butterfly valves, and regulating valves.

Technical challenges: rapid opening and closing of high-pressure air (10-20MPa), sealing reliability, and fatigue life.

Typical applications: gas storage inlet and outlet, expander front regulation, compressor interstage cutoff.


1.4 Nuclear power plant (conventional island + nuclear island auxiliary)

Valve requirements: nuclear-grade safety valves, gate valves, globe valves, and instrument valves.

Technical challenges: seismic resistance (SSE level), radiation resistance, and zero leakage sealing (ASME Class III).

Typical applications: main steam isolation, containment spray system, chemical and volume control system.


1.5 Gas-Steam Combined Cycle (GTCC)

Valve requirements: bypass valve, temperature and pressure reducing valve, gas shut-off valve.

Technical challenges: rapid response (second-level), high-frequency actions, and high-temperature gas sealing.

Typical applications: high-pressure bypass of waste heat boilers, emergency shut-off of fuel pipelines.