Gate Valve Handwheel Orientation

The ball is held away from the seat by the stem so as to avoid abrasion.

Gate valve handwheel orientation.

Some gate valves open left and some open right. Ideally all the gate valves in a distribution system will open the same way but at minimum you want to know which ones might be backward i e opposite the majority. Otherwise body threads may be damaged causing the valve to leak. Damage due to incorrect installation is not covered by our warranty.

It is good practice on psv discharge block valves closed systems to orient the gate valve handwheel stem either horizontally or below horizontal horizontal discharge line installations. With the valve in the open position clockwise rotation of the handwheel causes the ball to rotate clockwise until the port through the ball is perpendicular to the flow stream. If the valve has a rising stem its position can be seen just by looking at the position of the stem. If the valve owner indicates that the valve may be installed in the stem horizontal position the guides should be hardfaced to prevent the dreaded cock and lock.

A red nut indicates that the valve opens to the. They are operated by a threaded stem which connects the actuator generally a hand wheel or motor to the stem of the gate. During installation note the color of the operating nut. Hi everyone could somebody give me a tip regarding the gate valves on horizontal line with its handwheel at horizontal position.

Turn the hand wheel clockwise to close the valve and turn the hand wheel counter clockwise when opening the valve. Gate valves work by inserting a rectangular gate or wedge into the path of a flowing fluid. For parties repairing gate valves 14 inches and larger a close examination of disc and body guides is in order.