Original oil and gas trade magazine vintage ad for CAMERON IRON WORKS, INC. of Houston, TX. Complete Pressure Control with the Automatic Safety Valve. Protect your well and equipment by shutting off flow if a choke or regulator cuts out line plugs or breaks, or large leak occurs. Easiest to reset, just flick the lever. This unique 1962 oilfield petroleum well industry equipment magazine advertisement would display fantastic matted and framed. Two-page gatefold advertisement. Nice graphics.