Anderson Greenwood
Anderson Greenwood began as an airplane manufacturer in 1947, when the first AG-14 plane was produced. The Korean War stopped airplane production, and Anderson Greenwood utilized its engineering capabilities in subcontracting work for various airframe companies. They eventually set aside a valve design group to develop new valve ideas.

In 1954, their research and inventiveness resulted in the development of the first soft-seated safety-relief valves and hand valves. By 1957, Anderson Greenwood had developed the first line of pilot operated valves, the Model 23. Since then, Anderson Greenwood has become the premier pilot-operated safety relief valve company in the world.

Over the years, Anderson Greenwood has become known as "the problem solver." Company engineers have designed many valves for specialty applications, like tank bottom valves for filling and withdrawing LNG from tanks and highly technical marine safety valves for LNG and LPG carriers.

Today, Anderson Greenwood is regarded as the worldwide technology leader in research, design and manufacture of high quality, high performance valve products. This reputation has been earned on the basis of care and commitment to our valued customers.

Crosby
Founded in 1874, Crosby's earned leadership in overpressure protection has supported its customers' safety and productivity for 125 years. From whistles, gages and safety valves on original steam locomotives to the high demands of today's nuclear, chemical, refining and power industries, Crosby is there.

Crosby supports a wide range of heavy industry applications, and is known for its beyond limits approach to unique customer applications. We also maintain the industry's most extensive high-flow facilities for valve testing on air, steam and water.

People make the difference. Crosby's engineers, technicians, and sales representatives combine for hundreds of years of industry-specific experience. They provide expert advice and assistance on all your pressure demands. Crosby's manufacturing team and advanced machining methods produce superior products, fully meeting customer requirements. Extensive inventories and on-site coverage extends anywhere in the world. We bring technical support to the harshest environments and most remote locations - Crosby is where you are.

Crosby's pressure management products are specifically designed for your exacting demands.

Style JOS-E/JBS-E: the world's most widely used and trusted top-loaded, flanged PRV.

Series 800, 900, BP OMNI-TRIM: flanged or threaded, this economical precision lapped metal or soft-seat PRV provides the ultimate in seat tightness.

Crosby H Series: power plants throughout the world are now experiencing the benefits of this re-engineered product.