Pentair Valves & Controls has designed a new range of pressure and vacuum relief valves, which is the first series to be completely compliant with the new API 2000 regulation.

The Anderson Greenwood 4000 Series is the first high-capacity, full lift valves range to be verified as fully compliant with the latest API 2000 standard. The seventh edition of this regulation covers normal and emergency vapour venting requirements for bulk liquid storage tanks.

Pentair v and c high capacity full lift pressure and vacuum relief valve

The valves have been engineered to provide increased flow capacities – fully opening at 10% overpressure, protecting tanks from internal pressure fluctuations.

As a result, the new instruments allow maximum allowable working pressure and vacuum, filling and emptying tanks quicker and operating at higher pressures.

Stuart Brooks, Tank Protection Product Manager at Pentair, described, “With verified, 100% API 2000 compliance, customers can be fully confident that they are working with products that meet the latest standards.”

The Pembroke-based branch of Pentair tested the new series on a square-edge flange connection with a variety of coatings for protection from extreme temperatures and corrosive substances.


Pentair’s Valves & Controls business manufactures valves, actuators and controls for applications in the oil and gas, chemical, food and beverage and construction industries.