The top end of the gas spring holds the actuator or the button that once pressed lowers or raises the chair.
What is a gas lift chair.
The gas cylinder also referred to as the gas lift or pneumatic cylinder causes some of the most common chair problems.
We take apart a gas cylinder for an office chair to look inside uploaded by http longlifelocks ca.
Thus to replace or repair the valve the tubing string must be pulled.
To measure your existing gas cylinder for replacement on your office swivel chair.
Order replacement cylinders from https www myc.
A patent describing a common configuration of a gas lift cylinder by john wang published 20 may 1989.
Watch this how to video.
Gas lifts use the artificial lift method by injecting gas into the production tubing to raise water or oil.
It works through a cylinder inside the bar stool.
The gas spring is what holds the pressurized nitrogen gas and some oil for lubrication.
The top part is called a gas spring and has a diameter of 28 mm or 1 1 inches.
A standard office chair gas cylinder basically has two parts.
One so that compressed gas can get.
The purpose of the gas lift is to make it easier to alter the height on the bar stool so people don t have to do it manually every time.
Installing replacement gas cylinder.
This acts to lower the hydrostatic pressure at the bottom of the tubing reducing its density.
Our recommendation is this 5 stroke gas cylinder by oak leaf.
For a gas lift office chair you need the spring to provide a little bit more force than the weight of the seat.
A gas lift chair is a form of office chair that allows the user to modify their height in relation to the height of a desk leading to an increase in comfort and ergonomic benefit.
Gas lift bar stools work in a similar way to the gas lift action on height adjustable chairs.
The gas lift mandrel is a device installed in the tubing string of a gas lift well onto which or into which a gas lift valve is fitted.
In a conventional gas lift mandrel a gas lift valve is installed as the tubing is placed in the well.
The gas injected is high pressure gas by adding bubbles of compressed air and vapor.
A 4 inch stroke gas cylinder means that your chair can be adjusted 4 inches up from its lowest position.
This contains two chambers.
Some of the most common reasons for this happening include.
Instead it typically has a lever attached that grips and locks at a certain height preventing the seat from moving up or down any further.
In most chairs the spring doesn t actually support the person s weight.
There are two common types of mandrels.