petcock

• Válvula o grifo pequeño que se utiliza para drenar líquidos, liberar presión o ventilar aire, comúnmente presente en motores, radiadores o tuberías.

A small valve, faucet, or cock used to regulate the release of air, pressure, or liquid, often found in engines or plumbing systems for draining or venting.

1. Small valve for draining or ventingC1formaltechnical

   A small valve or faucet used to release air, pressure, or liquid from a system, such as an engine or pipe.

   Válvula de purga

   • The mechanic opened the petcock to drain the radiator fluid.
   • Make sure the petcock is closed before refilling the tank.
   • A stuck petcock can cause pressure buildup in the system.