Metro Testing installs, tests, and repairs Directional Control Valves all across the Minneapolis / St Paul Metro area and across all of Minnesota.
Call us at 612-221-5888 to get help with your Directional Control Valve.
The DCV is one of the most basic parts in hydraulics and pneumatics. They function to let water flow into different directions from different sources. The valve comprises of a spool within a cylinder and is controlled either mechanically or through the use of electronics. Directional valves do not offer pressure or flow regulation but only functions to direct the flow of water similar to a switch.
Performance is dependent on the:
- Dynamic Power Limit with regard to maximum flow and pressure
- Static Power Limit
- Resistance to flow
- Switching time
The functionality of a directional control valve is dependent on the number of ports as well as the amount of spool position. A directional control valve usually comprises of at least a couple of spool positions and two working ports. The most common type is the 4/3 valve, which comprises of four working ports and at least three spool positions.
DCV Installation – Minneapolis, St Paul, Twin Cities
Mounting – The directional control valve can be mounted in any type of orientation. It should however be on a flat surface with special precautions taken in order to avoid twisting or bending as this may cause it to fail.
Handle Assembly – If the enclosed lever handle is needed, the handle actuator is already installed in the valve itself. All one has to do is to screw the supplied lever into the threaded handle actuator.
An annual test needs to be performed for directional control valve assemblies to ensure they function correctly as backflow preventer devices rarely if ever exhibit any physical signs of damage. Only a certified professional must perform testing of the device.
Overhaul of the DCV device is due to a number of factors particularly wear and tear. Normally, these devices last for several years before servicing is required. However, exposure to freezing can damage the valve and abrupt increase in water pressure may also damage internal components. Rubber repair kits usually do the job and rarely if ever one needs to replace the entire assembly unless it is completely necessary.