Selecting the correct hose and fittings for your hydraulic system is extremely important as it ensures the system is airtight and works effectively. There is a wide range of hose and fittings available for different applications and unit sizes. Hose and fitting suppliers use the STAMPED anachronism to make sure all of the most essential requirements are taken into consideration in order to select the correct hose size.
STAMPED stands for; Size, Temperature, Application, Media, Pressure, Environmental factors and Delivery. This is an effective way for suppliers and consumers to communicate removing the risk of selecting incorrect equipment. Making mistakes at this stage is costly and has negative consequences on productivity. Taking the time to research the information outlined in the STAMPED will make the ordering process quicker and ensure you are completely satisfied with your purchase.
Here is a guide on how to use STAMPED and what information is required before you contact your supplier to complete your order.
In order to measure the hose correctly, you must take these measurements into consideration; inside diameter (ID), the outside diameter (OD) and the length of the hose. Accurately measuring the inside diameter maximises pressure and flow turbulence. While the outside diameter measurement aids the selection of specific clamps. If the hose is too long it will create kinks and affect flow if it is too short it won’t be able to fit into the unit.
An increase in temperature profoundly reduces the working pressure of a hose. Hoses should not be used in temperatures close to their upper levels. Therefore it is important you take the function and temperature requirements of the hose into consideration during selection. Your hose must be able to withstand the maximum temperature without inhibiting the effectiveness of the transfer of liquid.
The application of the hose and fittings determines the type of hose you use. You need to take the following requirements into consideration when selecting your hose; pressure and repeated cycles, suction, industry standards, whether it needs to be conductive or not and if an upgrade is necessary.
You need to consider what type of material is going to go through the hose. Liquid, air, gas or chemical factors determine the composition of the hose materials. Choosing the wrong material for your hose will cause it to deteriorate quickly and damage the system.
You must be aware of the pressure the hose needs to withstand as It is vitally important the pressure in the hose remains within working parameters. Regular spikes in pressure significantly reduce the lifespan of the hose. Any pressure or vacuum above recommended guidelines will damage the hose at a cost to the business.
Choosing the correct fittings and clamps should take the requirements for the hose into consideration. They need to be able to cope with the same pressure, heat and media as the hose. Fittings and clamps are a weak point in the system which can impede the effectiveness of the system if they are not suitable.
If your hose and fittings are part of a new hydraulic unit or replace for a unit in situ you need to take delivery into consideration. How will you integrate the hoses and fittings into your existing system? Who is going to be responsible for setting up your new system? This is something you will need to discuss with your supplier to ensure you are up and running as quickly as possible.
If you would like to find out more about hose and fittings contact us and we would be happy to offer advice.