8481309191
- Taps, cocks, valves and similar appliances for pipes, boiler shells, tanks, vats or the like, including pressure-reducing valves and thermostatically controlled valves
- Check (non-return) valves
- Of cast iron or of steel
- Other
- Steel check (non-return) valves with: - an opening pressure of not more than 800 kPa - an external diameter not more than 37 mm