Pff Gear Operated Two Way Gate Valve: According to the customer's request and the need of oil production,on basic of the PFF slab gate valve,we have a new design in accordance with the API 6A specification strictly and then manufacture PFF gear operated two way gate valve which with a lower indicator. Size: 2-1/16",3-1/8",3-1/16",4-1/16",5-1/8",7-1/16" WP:2000-15,000psi Working Temperature:L U,PU Material:AA-FF PSL:1-4 PR:1-2