Drip feed oilers are perhaps the most popular method of automatic oil lubrication. The lubricant feed rate can be set by the operator by merely turning the needle valve and viewing the drip rate in the flow sight. Oil flow can be stopped by shutting the valve.
A cam-lock valve flow sight is also available with Drip Oilers as an alternative method for precise metering applications.
The D-5 model provides a low cost alternative to metal base drip oiler units.