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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
gate valve
