Accessory Valves
Frequently Asked Questions
Frequently Asked Questions
What is the difference between your accessory valves and others I already use? Vektek Accessory Valves are sized for the normal flows and conditions present in hydraulic clamping systems. They are not intended for use in general industrial equipment as they are specifically intended for clamping. Maximum intended flow rate on any Vektek Accessory Valve is 5.7 l/minute. Excessive flows may cause damage or erratic behavior. General industrial products are intended for use in large flow applications (typically 7.6 l/minute +). These general industrial products do not normally work well in clamping systems. What is the function of a pressure reducing valve? Relative to a pressure relief valve? Pressure Reducing Valves limit the pressure that can pass through the valve. The valve remains open and fluid flows freely to downstream devices until the pressure in the valve reaches the pressure (adjustable) set-point. At the set-point pressure, the valve closes blocking further flow and pressure rise to the downstream devices. If there is sufficient downstream pressure loss, the PRV will re-open and allow flow to pass through the valve until the pressure returns to the valve set-point. Pressure Relief Valves (sometimes known as pressure regulating valves) are intended to guard against excess pressure. When a circuit builds beyond the setting of a pressure relief valve, it opens and excess fluid is returned to tank through a return line. If a relief valve is set below the pressure adjustment of a pump, the pump will kick on and off frequently. Incorrect adjustment of a Pressure Relief Valve can cause expensive damage to your pump. Explain why you don’t want me to put a group of sequence valves in series? When a group of Sequence Valves is put in a series, they have to work harder than if they are fed parallel from a single main feed line. If they are stacked in a series, each modulates trying to maintain pressure while feeding downstream valves. This will cause premature wear. Many "series" sequence valves are in a parallel circuit stacked side-by-side. You may put as many sequence valves in parallel as you wish. We recommend approximately 35 bar (3.5 MPa) difference in their settings.
What is the difference between your Ball Valve and the "screw down" valves I can buy locally? Our Ball Valves shut off a circuit and maintain that seal until rotated and pressure is released later. They are intended for applications that will not allow for leakage or are repetitive. They change from closed to full open with 1/4 turn of the handle. Vektek offers three styles of filter. The first type is In-line Filter (available in 10 or 25 micron filtration), designed and sized to be used in-line where fine filtration is desired to help protect devices (restricted to a maximum flow rate of 3 gpm) making this unit particularly flexible in meeting your design criteria. You can also mount these filters directly into the device ports of sensitive valves and components to guard against contamination. The second style is the Basic Filter which is also available in 10 and 25-micron filter ratings. These filters catch small debris and are intended Explain why I might select one filter over another. for high contamination systems. The larger filtering surface allows this unit to accept up to 7 gpm and handle larger quantities of chip contamination before maintenance. The frequency of maintenance is determined by the amount of contamination present in your system. Simple flushing will often improve the flow through these filters when performance becomes obviously limited. Our third type of filter element is an In-line Screen Mesh. This filter is intended to catch the big chips (180 micron rating). At fixture assembly, it is easy to forget to clean the I.D. (inside diameter) of the tubing before introducing oil to the plumbing. Tubing and manifold passages may contain chips, dirt, cobwebs, tape or paper. These contaminants will break loose and lodge in a valve resulting in valve failure. By using these “chip catchers” you can reduce expense and can make your system more dependable.
Standard Features Common Features: Sequence, Pressure Relief and Pressure Reducing Valves n Material: All cartridge components are steel, operating parts are hardened. n Operating Media: Conventional, petroleum based, premium quality hydraulic fluid such as VektorFlo ® Model No. 65-0010-01 , see page J-1. n Recommended Filtration: 25 Micron (NOM) / 40 Micron (ABS) (minimum). n Adjustments: Turning adjustment screw clockwise (when viewed from adjustment end of cartridge) increases pressure setting on all three valve styles. NOTE: Maximum system flow rate is 5.7 l/min. for all VektorFlo ® special function valves.
Excess flow voids warranty.
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