Cenlub Industries Limited

Various types of valves are used in oil circulatory system depending upon process conditions and functional requirement. Commonly used valves are gate valve, check valve, plug valve, and three way ball valve. Normally 50 nb and above. 150 class of valves with cast steel body and seat ring and disk of carbon steel with cr. Steel facing are used. For 40 nb and below, forged steel body valves with seat ring and disc of ss 410 are used. For systems with more than 10 bar working pressure. Valves of class 300 and class 600 are provided.

This reversing valve is most reliable device to be used in dual line system. Its commanded by a 3 ph motor. Reverse pressure of the system is adjustable by means of end of line pressure switch. There are 2 micro switches which control both movement and position of reversing piston. It is suitable upto flow of 80 kg/hr of grease. Operating pressure is upto 400 bar.

The basic function of the valve is to divert grease frorn line i to line ii as soon as sufficient preset pressure reaches on the valve. Reversing valve must monitor grease flow alternatively from one supply line to the other, simultaneously putting the first on in relief position. This operation gets repeated in the opposite direction to complete the cycle. This reversing valve which is hydraulically operated in suitable from 150-400 bar. It is suitable for flow of grease from 45-50 kg/hr. Pressure setting in the valve can be done with the help of relief screw. For change over signal there is a micro switch attached to rod of the valve.

Pressure relief valve is an essential safety device which is installed in the delivery line just after the pump. It releases oil to tank in case of over pressure due to line chokeing. Thus saving the pump from over loading. Size of this valve and its orifice area is selected on the basis of flow rate, relieving pressure, back pressure, viscosity of fluid and working temperature.