1967 Press Photo Elastomeric Plug Valve for High Pressure Refinery Storage Tank

Designed for high pressure installations, this elastomeric plug valve is shown in use near a high-pressure refinery storage tank. It is used to open and close liquified petroleum gas lines, and is so constructed that it seals itself tighter as pressure increases, cutting down valve loss which has been prevalent in the industry for many years. Oil pipeline

Photo is dated 1967.

Photo measures 8 x 10 inches.