Private company

Anderson Greenwood Crosby

Anderson Greenwood Crosby is a US manufacturing company that produces valves for industrial processes, including pressure relief and tank protection valves. The firm was established as Anderson Greenwood in 1947 in Houston, Texas by Marvin Greenwood, Ben Anderson, and Lomis Slaughter Jr to produce a light aircraft, the AG-14. This project never made it past the prototyping stage, but involvement in a missile project soon thereafter saw the firm focus on valve design.2 Wikipedia text CC BY-SA 4.0

Last updated Oct 21, 2026.

Overview

Anderson Greenwood Crosby is a US manufacturing company that produces valves for industrial processes, including pressure relief and tank protection valves. The firm was established as Anderson Greenwood in 1947 in Houston, Texas by Marvin Greenwood, Ben Anderson, and Lomis Slaughter Jr to produce a light aircraft, the AG-14. This project never made it past the prototyping stage, but involvement in a missile project soon thereafter saw the firm focus on valve design. In the 1970s, the firm owned the Bellanca name for a while, and during this time attempted to market a new light plane design as the Bellanca Aries, but was short lived with only 4 being sold.2

Sources

The numbers on this page point here. Each one links to the record it came from.

  1. 1
  2. 2