API 6A Gate Valves provided by DOUSON are field proven valves which strictly designed and manufactured according to API 6A and API Spec Q1 by forging or casting AISI 4130/4140 low alloy or AISI 410 SS steel. Some extreme materials for extreme service, such as Inconel or Duplex stainless steel are available as well.

DOUSON Gate Valves' feature:

     1. Forged or Cast Body & Bonnet,

     2. metal-to-metal seal, gate to seat, seat to body, bonnet seal and stem backseat.

     3. Bi-directional Sealing,

     4. All internal parts can be inline changed.

     5. Heavy duty thrust bearing is used to absorb stem thrust and reduce operating torque.

     6. Non-rising stem made by Alloy-nitrided or 17-4 stainless steel, the pressure in the body cavity  will not increase during valve operation, can replace stem packing under pressure