Several days ago, I exactly read something about the question in DSMATERIALA's website. Now we share with it. The valve is used to regulate flow control such as to control the flow levels of gas, liquids and steam. It is necessary to dismantle a valve when you are either replacing a gate valve or repairing it. The procedures are list in following descriptions:
1, Turn off the main medium supply before dismantling the gate valve.
2.Take the screwdriver and remove the nut and the hand wheel from the top of the gate valve.
3.Unscrew the packing nut from the stem and remove the gland spring along with the packing gland from the top portion of the bonnet.
4.Remove all the nuts, lock washers and cap screws that are visible on the valve body and bonnet.
5.Take the bonnet, the gasket and the disc riser off of the stem. Unbolt the stem from the bonnet to complete the process.
the gate and the valve.
Forged steel gate valve flanged is just a gate valve which with a flange.
A gate valve is positive shut off and used for on of off . A globe valve is for throttling
A Knife Gate Valve is used to slice through sludge /sewerage and a gate is used fro normal positive shut off If you want to find the photo of Knife Gate Valve,you can enter to the link:http://www.kolinkcn.com/
a gate valve is a valve you turn the handle round and round until it shuts off a ball valve is a valve with a lever that you turn 1/4 turn and its off hope this helps plumber paul
a gate valve is a one way totally open or closed valve, a control valve is a variable valve.
The Gate valve is the stop valve & the Globe valve is the fluid Regulating valve.
Never ever use a Gate type of valve for throttling ONLY a globe pattern is designed for this purpose and a needle valve
gate valve. globes are used for throttling and have far too many turns. ball valves are not made for thick stuff. this question was on the inter-provincal exam they had globe valve, gate valve, diaphragm valve and piston valve. for answers too choose from.
how to calculate gate valve torgue. What is the torgue required for 1100NB gate vave used for 3kg/cm2 steam line
after gate valve, because when you want make maintenance for sump pump , you don't want all water in the pipe drop down sump pump - gate valve - non return valve
It can be defined as followed. Valve in sliding water gate.