API Adaptors feature a proprietary, multiple-material.cast head design that greatly reduces wear for a longer serviceable life,

Two-piece aluminum construction with a rotatable, hard-coated adaptor for longer life. One-piece heavy duty poppet with an acetal resin bearing for smoother opening characteristics. Computer designed cam profile provides easy opening. Lightweight and resists corrosion;aluminum handle also available. Grease fitting is standard for easier maintenance. Designed in accordance with API RP-1004, with a standard 4" TTMA Flange

Unloading oil valve