Product classification
HS code for Manostats: 9032.20
Regulating or controlling instruments and apparatus, automatic, manostats.
Classification of manostats under HS 9032.20
Manostats are classified under HS code 9032.20, which covers automatic regulating or controlling instruments and apparatus. The classification is based on the functional nature of the device. A manostat is designed to maintain a constant pressure in a system by automatically triggering a corrective action when the pressure deviates from a set point. This distinguishes it from a simple pressure gauge. Under the General Rules of Interpretation (GRI), specifically GRI 1, the device is classified in Chapter 90 because it is a precision instrument used for checking or controlling variables. Heading 9032 is reserved for instruments that consist of a measuring device, a control mechanism, and a starting, stopping, or operating device. Since a manostat performs all these functions to regulate pressure, it is specifically assigned to the subheading 9032.20.
- Covers
- Automatic pressure regulators (manostats)
- Vacuum manostats for laboratory environments
- Industrial pressure controllers with automatic feedback loops
- Electronic manostats used in HVAC systems
- Also under 9032.20
- Danfoss KP Series Pressure Switch
- Schneider Electric XML Series Pressure Sensor
- WIKA Pressure Switch
- Parker P3N Series Pressure Regulator
Codes often confused with 9032.20
Common mistake. Manostats are often confused with HS code 9026.20, which covers instruments for measuring or checking pressure. The key difference is that 9026 instruments only measure or display pressure, whereas 9032 instruments (manostats) actually control it. Another common misclassification is HS code 8481.10, which covers pressure-reducing valves. While both regulate pressure, 8481.10 is for mechanical valves, whereas 9032.20 is for the complete automatic controlling apparatus that may include electrical or electronic components to maintain a set point.
Top exporters and importers of HS 903220 (the code used for manostats), 2025
In 2025, the largest exporter of HS 903220 (the code used for manostats) in UN Comtrade data was Germany, with 25% of world exports; the largest importer in UN Comtrade data was Germany, with 17% of world imports. Countries that did not report 2025 data are estimated from partner records, which can understate them.
Figures cover everything classified under HS 903220, not only manostats.
Top exporters 2025 · share of world exports
- 1 Germany $260M 25% of world exports
- 2 Japan $98M 9.5% of world exports
- 3 United States $82M 8.0% of world exports
World total: $1.0B Reported figures on UN Comtrade ↗
Top importers 2025 · share of world imports
- 1 Germany $192M 17% of world imports
- 2 United States $93M 8.5% of world imports
- 3 Italy $51M 4.7% of world imports
World total: $1.1B Reported figures on UN Comtrade ↗
How these figures are built
109 countries reported 2025 trade to UN Comtrade in HS 2022, and their own totals are used. Countries that did not report are estimated from what other countries recorded trading with them. Those estimates miss trade with other non-reporting countries, so they can be low, and a non-reporting country can rank higher than shown or be missing from the list. World totals add both and leave out trade between two non-reporting countries. Figures are in current US dollars; reported imports are mostly valued CIF and exports FOB, and exports include re-exports. The UN Comtrade links show the underlying records; they can also list a few reporters left out here (regional groups and older HS editions).
Source: UN Comtrade (United Nations Statistics Division), 2025 annual data.
Brazil NCM code for manostats
Brazil classifies manostats under NCM 9032.20.00: HS 9032.20 with 00 added.
Source: Siscomex NCM table, updated Oct 2026. The Portuguese text on each NCM page is the official one.
Questions about manostats
What is the HS code for Manostats?
The HS code for Manostats is 903220 (Regulating or controlling instruments and apparatus; automatic, manostats). The HS code for automatic manostats is 9032.20.
How do I classify Manostats for customs?
Manostats is classified under HS code 903220 — Regulating or controlling instruments and apparatus; automatic, manostats. This is a 6-digit subheading level code.
Is a manual pressure valve considered a manostat?
No, manual valves are classified under heading 8481. A manostat must be an automatic controlling instrument to fall under 9032.20.
Which countries are the top exporters of manostats (HS 903220)?
In 2025, the top exporters of HS 903220 (the code used for manostats) in UN Comtrade data were Germany ($260M, 25% of world exports), Japan ($98M) and the United States ($82M). World exports came to about $1.0B, adding countries' reported figures and partner-based estimates for those that did not report (UN Comtrade data). Countries that did not report 2025 data are estimated from partner records, which can understate them.
Which countries are the top importers of manostats (HS 903220)?
In 2025, the top importers of HS 903220 (the code used for manostats) in UN Comtrade data were Germany ($192M, 17% of world imports), the United States ($93M) and Italy ($51M). World imports came to about $1.1B, adding countries' reported figures and partner-based estimates for those that did not report (UN Comtrade data). Countries that did not report 2025 data are estimated from partner records, which can understate them.
Is the HS code for Manostats the same in all countries?
The base HS code 903220 for Manostats is internationally standardized for the first 6 digits across 200+ countries. Individual countries may add additional digits for national tariff lines and specific classifications.
What is the NCM code for manostats in Brazil?
In Brazil, manostats (HS 903220) is classified under NCM 9032.20.00.