Neles Oy

Juha Antti Nelimarkka

A gate valve having a cylindrical angle-transported disc gate pivotally moveable into a channel closing position in which it is in sealing engagement with a packing ring disposed in a radial packing groove in a body defining the channel. The outer diameter of the packing ring is smaller than the diameter of the packing groove so that when the gate is pivoted into a channel closing position in sealing engagement with the packing ring, the ring is biased into tight sealing engagement with the gate.

Gate valve

A two-way linear actuator for changing a linear movement of a piston into a rotating movement of a shaft. The actuator is operated by some mechanical device generally comprising two cylinders, a piston movable inside the cylinders, a torque shaft at a right angle to the piston movement, and a machine element connecting the torque shaft to the piston located within the piston, and sealed from the interior of the cylinders.

Actuator

The flangeless valve is disposed between flange bolts of adjacent pipe flanges. The valve comprises a body which has two parts, a closing element rotatably mounted within the body and seat rings mounted in ring-shaped transverse grooves machined in both sides of the body. The valve body diameter is small enough so that the valve may be placed in the pipeline, between flange bolts of the pipe flanges. Most bolts do not contact the valve body and pass through holes in the pipe flanges; other fasteners are attached to a frame on the valve through the flanges thereby transmitting the bolt clamping force. One body construction can use a circumferential seal between the body halves in the body joint. Such seal ends at the shaft and a ring-shaped seal is located in a plane perpendicular to the circumferential seal and presses against its ends with a tightenable bushing.

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Helsinki, undefined

Juha Antti Nelimarkka