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SITCSection 7
U.S. imports of safety or relief valves (SITC 74740) totaled $39.2M in April 2026, traded with 53 countries.
Importers of Safety or Relief Valves paid $4.0M in duties in April 2026 — an effective duty rate of 13% on $29.5M in dutiable value, based on actual customs collections rather than the published tariff schedule.
Last updated: April 2026 dataSafety and relief valves are pressure-protection devices mandated by boiler, pressure-vessel, and process-safety codes — including ASME and API standards — to vent excess pressure before equipment failure occurs. Their import classification under SITC 74740 is closely tied to the application: spring-loaded safety valves for steam service, pilot-operated relief valves for process lines, and rupture-disk assemblies each occupy distinct commercial niches. Because these valves are often required to carry third-party certification (such as ASME UV or NB stamps), importers should confirm that foreign-manufactured units meet the applicable code stamp requirements accepted by US jurisdictions.
AI-written summary of the official U.S. Census Bureau trade figures on this page — verify before relying on it.
Many US jurisdictions and insurance underwriters require that pressure-relief devices on boilers and unfired pressure vessels bear an ASME UV or UD stamp, or equivalent National Board certification. Importers should verify with the end-user's engineering team and the relevant state boiler inspection authority before purchasing uncertified foreign units.
For SITC purposes, both types fall under 74740. At the HTS level, classification generally hinges on body material and pressure rating rather than on the safety-vs-relief functional distinction. However, the technical difference matters commercially: safety valves open fully and quickly (typically for gas/steam service), while relief valves modulate opening proportionally to overpressure (common in liquid service).
| Country | Imports | Exports | Balance |
|---|---|---|---|
| MEXICO | $6.9M | $11.6M | +$4.7M |
| CANADA | $3.8M | $12.7M | +$8.8M |
| GERMANY | $5.7M | $2.9M | -$2.8M |
| UNITED KINGDOM | $1.9M | $3.2M | +$1.3M |
| CHINA | $1.9M | $2.9M | +$1.1M |
Monthly import values over time
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