Anderson Greenwood and Crosby are the world's premier manufacturers of pressure relief valves, tank blanketing products and instrumentation valves and manifolds.

Pressure Relief Products 
Looking for the right pressure relief valve to protect your system? Anderson Greenwood and Crosby are the premier suppliers of both direct spring operated and pilot operated pressure relief valves. Browse the Anderson Greenwood and Crosby Direct Spring and Pilot Operated pages on the left for detailed information on available products.

Tank Protection Products
Anderson Greenwood has the largest and most innovative range of differential pressure flow manifolds available in the world with models available for every kind of D/P instrument.

Safety Selector
Anderson Greenwood / Crosby developed the patented, Safety Selector Valve in response to the growing demand for cost-effective, dual pressure relief valve and/or rupture disc installations in today’s process industries. The Safety Selector Valve is designed specifically to function as an effective "switchover" device that permits routine or emergency servicing of redundant pressure relief devices with no process interruption, providing continuous system overpressure protection.

Literature
Review and download the latest products catalogs, brochures and technical information for Anderson Greenwood and Crosby products.