How to Select the Right Hydraulic Pressure Valves


Zac Ferry, WED |  You will find hydraulic pressure valves in almost all hydraulic systems and they help in several functions. However, selecting the right hydraulic pressure valve can be a bit difficult. A lot of us will want to be able to install this valve and forget about it until it’s time for maintenance. You need to understand some factors when you select the valve so that you get what you came for. Before but a hydraulic pressure valve you need to know their specification and capacity. Apart from that, different kinds of hydraulic system need different kinds of valves and you need to choose the well fitted valve for your machine.  Here are some of the key things to keep in mind when you go to buy a hydraulic pressure valves.

How Would You Buy A Hydraulic Pressure Valve?

  • Closed and open ended loop:  both close ended loops and open ended loops operate between 1000 and 5000 psi. It is an example of an open-ended system because it involves the high pressure water spraying or other media in order to perform a certain process.  In closed loop systems, the low viscosity fluid will stay inside the system to convert the hydraulic pressure into mechanical energy to move a cylinder or a gear.
  • The Parameters Of System Design: the engineers who are designing the system for you need to know the exact requirements, so that they can use the right hydraulic pressure valves you need to know the required tonnage of the press which is a closed loop. Required flow rate (open ended) is also something you must specify. The other things you need to convey to the engineers are velocity (open ended), consistency of flow media (open ended), system pressures of both open ended and close ended systems, cycle frequency of both, and finally the operating temperature and the pressure drop for open and close ended systems.
  • The flow media: you should know the flow media because it helps you in deciding what type of valve you should use. If you use water, its cleanliness is a factor.  But it is not that big an issue for a closed loop system because it becomes very hard for contaminants to enter the closed loop system. On the other hand, open loop systems may collect sand and scale particles that will cause the valves and their components to wear out much faster. Another potential problem is a water hammer. It can be defined as a pressure wave which is caused by instant changes in the fluid velocity when you open or close a valve suddenly.  It may burst the pipes, or even pull them from the point where they are anchored. Valves have even been known to be exploded because of a water hammer and you should consider this factor when you buy a hydraulic pressure valves.
  • Plunger and poppet valves: when you choose a valve, it comes down to a selection between a plunger valve and a poppet valve. The difference lies in the way these two valves operate. In a poppet valve, the cone or ball shape plug is kept in place on the valve seat with the help of a bias spring or a hydraulic piston. The fluid only moves when the plug is moved. A plunger valve is a piston and a rod where the rod moves in and out of the hydraulic cylinder. Poppet valve will work better in directional control as well as cleaner systems then plunger valves.

When you go out there, keep these tips about hydraulic pressure valves in mind, and do not forget to specify your need to the engineers who will build the system for you.