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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.
The concept of manifolding three or more valves together in one body to use in connecting flow meters to the process was realized by obtaining a license from the inventor, John Hewson. This revolutionized the installation of differential pressure instruments.
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 in conjunction with its network of direct and independent representatives and assemblers 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.
Direct Spring Pressure Relief Valves
- Style JOS-E
- Series 800 and 900 OMNI_TRIM
- Series 60 and 80 PRV
- Series BP OMNI-TRIM
Safety Relief Valves
- Style HCI Isoflex
- Style HE Isoflex
- Style HSJ
- Style HPV-ST
- Series K
- Series A
Pilot Operated Pressure Relief Valves
- Series 200
- Series 400
- Series 500
- Series 800
Low Pressure Pilot Operated
- Series 90
- Series 9000
- Safety Selector Valve
- BlockBody
Specialty Valves
- Type 727 High Temperature Pilot Operated Safety Valve
- BV-1 Tank Blanketing Valve
- 9700 Severe Service Vent
Nuclear Products
- Styles HA and HB Pressure Relief Devices
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