A GATE VALVES comprising a valve body, a gate, a bonnet assembly and an actuator assembly. The gate having a closure area, a flow opening extending through the gate, and a recess circumscribing the flow opening and the closure area having a material disposed therein and case hardened to form a wear resistant sealing surface about the flow opening and the closure area having a hardness greater than about 50 Rockwell. Gate Valves The gate being press fitted between a pair of seat rings such that the sealing surface remains in sealing engagement against the seat rings to provide a substantially fluid tight seal when the gate is in an open and closed position. The actuating assembly is connected to the gate for reciprocally moving the gate across the flow bore between the open position and the closed position.

Cast Gate, Globe, Check Valves A valve body having a flow bore extending therethrough, a gate chamber traversing the flow bore, and a seat surface; a gate disposed in the gate chamber for reciprocating movement across the flow bore to control flow through the flow bore, the gate having a closure area, a flow opening extending through the gate, and a recess circumscribing the flow opening and the closure area, the recess having a material disposed therein and case hardened to form a sealing surface about the flow opening and the closure area having a hardness of greater than about 50 Rockwell, the sealing surface being engagable against the seat surface to provide a substantially fluid tight seal when the gate is in an open position, wherein the flow opening of the gate is aligned with the flow bore, and a closed position, wherein the closure area of the gate is aligned with the flow bore; and actuating means connected to the gate for reciprocally moving the gate across the flow bore between the open position and the closed position.

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