WDL Valve supplies engineered valve configurations for high temperature, cryogenic, corrosive, abrasive, toxic, oxygen, vacuum and high-cycle duties. Selection begins with the real operating envelope, then matches valve design, materials, seating, packing, actuation and testing to the application.
A valve becomes severe service when the combination of fluid, pressure, temperature, differential pressure, cycling frequency, leakage risk or material compatibility creates a higher probability of erosion, corrosion, galling, cavitation, flashing, fugitive emissions or premature seal failure.
The same nominal valve may be suitable in one line and unreliable in another. A complete review should consider startup, shutdown, cleaning and upset conditions in addition to normal operation.
Corrosion: review every wetted and pressure-retaining material, not only the body. Chlorides, acids, reducing conditions and galvanic couples may require duplex, titanium, nickel alloys or other special materials.
Erosion and solids: consider flow path, velocity, hard-facing, seat protection and the location of throttling.
Temperature: check pressure-temperature rating, differential thermal expansion, seat limits, packing temperature and bonnet arrangement.
Emissions and toxic media: evaluate bellows seals, qualified packing, stem finish, live loading and inspection requirements.
High cycling: calculate operating torque through the complete pressure range and define actuator sizing, cycle rate and required life.
For applications where leakage control is central, see the Low Emission Valve Selection guide.
Severe service requirements occur in LNG, oil and gas, petrochemical, fine chemical, power generation, mining slurry, metallurgy, pulp and paper, desalination and specialty gas systems. Browse WDL Valve application guides to connect the valve design with the process duty.
No. Material compatibility is only one part of the design. Seat geometry, flow path, surface hardening, packing, actuation, installation and testing may be equally important.
Only after the full envelope is reviewed. The selected valve and actuator must remain within their pressure-temperature and torque limits under the worst credible condition.
The review starts with service data and project requirements, then identifies the proposed valve type, materials, seat and packing system, operation method and testing scope for quotation.
Send the datasheet, line list or operating envelope. WDL Valve will review the severe service risks and propose a valve configuration for your project.
Send your valve specifications, drawings or RFQ. Our engineering team will review the operating conditions and contact you with a suitable solution.
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