Pressure and vacuum valves reduce emissions
Pentair Valves & Controls
The Anderson Greenwood 4000 Series of pressure- and vacuum-relief valves (photo) are compliant with the seventh generation API 2000 standard, which covers normal and emergency vapor-venting requirements for bulk-liquid storage tanks. They are engineered to provide increased flow capacities and will fully open at 10% overpressure, helping to protect tanks from physical damage caused by internal pressure fluctuations, says the company. As a result, the valves can be set more closely to a storage tank’s maximum allowable working pressure (MAWP) or maximum allowable working vacuum (MAWV), enabling users to fill and empty tanks more quickly, and operate them at higher pressures, says the company. — Pentair Valves & Controls, Houston.