All > Science > Water
- A valve which will allow air or fluid to escape if its pressure becomes higher than the valve setting. A safety device that automatically provides protection against excessive temperatures, excessive pressures, or both.
Bureau of Reclamation - Cite This Source - This Definition
- Bonnet, Butterfly valve, Conifers, Ensign valve, Fixed cone valve (Howell Bunger valve), Gate valve, Hollow-jet valve, Howell Bunger valve., Needle valve, Petcock, Regulating gate (operating gate, regulating valve), Tube valve, Valve