Those gate valves can stop the flow of oil in either direction.

Typical gate valves are designed to be fully opened or closed.

The stevedores turned the three gate valves that came out of the ground.

Because of their ability to cut through liquids, gate valves are often used in the petroleum industry.

One of the major representatives of this type is the gate valve.

Wendy was the fourth and last child through the gate valve at the entrance to the chamber.

Gate valves are characterised as having either a rising or a nonrising stem.

Typical closing elements include butterfly, globe or gate valve discs.

Another type of bonnet construction in a gate valve is pressure seal bonnet.

A valve stem is mounted to the gate valve disc.

I followed Doogie to the inner gate valve.

The float switch controlled a simple gate valve.

Gate valves may have a diameter of approx.

If valves are used they should be a free flow type such as a ball valve or gate valve.

They have sixty-two remote gate valves, all radio-controlled from the pump station immediately to the north.

Therefore, gate valves are exclusively automated by means of electric multi-turn actuators.

They took out two gate valves."

The tunnel ended at a fully deployed, eight-foot-diameter gate valve, which had once been operated by an electric motor.

Tie the string fuse to one of the struts of the gate valve wheel.

Gate valves allow back-flushing of the gravel.

There were about two dozen panels, each behaving like fast-acting gate valves, and the pressure was a little higher after each.

You have to disconnect the emergency core cooling system and close and lock the gate valves."

ERC gate valves are available in a full range of sizes for a variety of applications.

The saturated steam drive was on the outside and had slide valves.

His design had a sliding valve in the bowl outlet above the trap.

The slide valves were worked by an outside Allan valve gear.

They had slide valves on top and outside Stephenson link motion.

The principal problem was lubrication of slide valves with the higher temperatures.

Before this patent, there were problems with slide valves which suffered excessive wear.

On simple slide valves, no opposing steam admission is possible due to the way they are constructed.

The slide valve is controlled by a fixed crank on the crankshaft.

Much of this kind of equipment, like slide valves, is produced only here."

The four superheated engines which retained slide valves were withdrawn 1931-1936.

The design was conservative, using slide valves and spur wheel gear drive transmission.

This engine had slide valves on the LP which were now at the front.

The slide valve allows water from the ejection pump to enter the tube.

It gets opened with a pneumatically operated sliding valve when a defined speed is reached.

It was a slide valve coal gas engine.

Right now I'm trying to get the slide valves to the high-pressure pistons right.

When the gears are turned relative to each other, the rods move the slide valve, allowing fluid in or out of the rack.

This is because it is difficult to keep a slide valve properly lubricated at high temperature.

In the 3001 class the steam chest was located underneath the cylinders, and contained two slide valves.

They had Joy valve gear and slide valves.

Other than this they were typical of most dock tanks with simple slide valves and oval buffers.

The class were fitted with a steam chest and slide valves located beneath the cylinders.

The first units had piston valves, the later ones slide valves.

The steam cut-off point when using a slide valve is less than 30% of the stroke.

If the tube is set up for Impulse Mode the slide valve will open with the muzzle door.