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Rising Stem Gate Valve DIN 3352 F4 is used when a straight-line flow of fluid and minimum flow restriction are needed. Gate valves are so-named because the part that either stops or allows flow through the valve acts somewhat like a gate. The gate is usually wedge-shaped. When the valve is wide open the gate is fully drawn up into the valve bonnet. This leaves an opening for flow through the valve the same size as the pipe in which the valve is installed.
Features of Rising Stem Gate Valve DIN 3352 F4 can be summarized as: 1)Body: Cast iron or ductile iron ;2)Seat ring: Brass/Bronze ;3)Stem: Stainless steel.
The stem is threaded into the gate. As the handwheel on the stem is rotated, the gate travels up or down the stem on the threads while the stem remains vertically stationary. This type of valve will almost always have a pointer indicator threaded onto the upper end of the stem to indicate the position of the gate.
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