1 shows an exploded view of a gate valve.
Rising stem gate valve drawing.
Non rising stem gate valve or insider screw valve.
Compared with other valves gate valves have a wider range of combined applications for pressure service fluid design pressure and temperature.
Brief description of the drawing.
Gate valves are classified as either rising stem or non rising stem valves.
You can see the image.
The disc travels along the stem like a nut when the stem is rotated.
Extreme travel tandem t valve setup.
According to the screw position of the stem the gate valve can be divided into rising stem gate valves and non rising stem gate valve nrs.
2 shows a cut through view of the yoke for a gate valve with the stem in a lowered position and the limit switch disengaged with a groove around the stem.
Ss mud valve non rising stem fabricated 14in 24in 2in cl mud valve op nut.
In rising stem type valves when the gate 8 is raised or lowered.
It is atex approved bi directional with full and plane bore and designed with ductile iron body stem gate bolts of stainless steel 316 and reinforced nbr sealing.
Extension stems and mud valve arrangements drawings.
Shear gate valves 4 12 inch shear gate flange end single wedge 14 30 inch shear gate flange end single wedge lift rod.
A gate or plug vale shuts off the low water t valve drain line.
For applications that require more than eight feet of travel between high and low water two t valves are utilized one for high water settings and one for low water settings.
The stem is threaded into the gate.
There is no upward movement of the stem in a non rising stem type.
Mud valve rising stem ci 4in 18in mud valve sliding stem ci 3in 24in.
In this type of valve stem threads are exposed to the flow medium.
Avk 702 10 103 knife gate valve with non rising stem and handwheel.
Stem nut for open stem gate valve is on its cover.