Switch valve cylinder pressure issue

You can first look for the valve’s manual; if your valve’s cylinder operates at 0.45 MPa to 1 MPa. 0 MPa is no problem, but it might not open even when increased to 1.0 MPa

The owner should first determine whether there is a blockage or an obstruction in the gas path; there is no problem with the gas supply pressure being set at 10 kilograms.

Why increase it to 10 BAR all at once? Try increasing it to 6 BAR first; I think there is some other issue

Based on our actual conditions, a cylinder actuator typically operates within a certain pressure range; the pressure of the air supply is usually around the upper limit of this range, at most being about 0.5 kgf/m2 higher than the maximum operating pressure of the cylinder.

Generally, a cylinder has a working pressure range, such as 3–5 kgf/m2; we set the air supply pressure at 4–5 kgf/m2, with a maximum of 5.5 kgf/m2.

The pressure of the instrument air is generally 6–7 kg/cm2; therefore, the manufacturer specifies 4.5 kg/cm2 to ensure the reliable operation of the cylinders. Setting it to the specified pressure will guarantee proper functioning.

It is best to maintain the supply pressure in accordance with the product instructions; otherwise, accidents may occur

Agree with the view of 7#. The manufacturer’s specified pressure is 0.45 MPa, so setting the pressure to 0.45 MPa is sufficient; it generally does not exceed 0.5 MPa either. This pressure cylinder is fully capable of operating normally; if there are issues, the cause should be sought elsewhere. The supply pressure of the on-off valves we are using now is all within the range of 0.45~0.5 MPa, and they are operating normally.

The manufacturer’s specified supply pressure for the cylinder of the on/off valve is 0.45 MPa; generally, if pressurization is carried out without replacing the valve for various reasons, it is recommended not to exceed 0.8 MPa.

The rated air supply pressure for the pneumatic actuator is 8 bar, which is equivalent to 8 kgf/cm^2. The typical overpressure range is 1.5 times the rated pressure, which is 1.2 MPa. In other words, it must not exceed 1.2 MPa. The air source pressure is directly proportional to the output torque. The rated gas source pressure indicated on the valve nameplate is the pressure that can drive the valve to operate.

The manufacturer’s specified supply pressure for the cylinder of the on/off valve is 0.45 MPa; users can adjust it up to a maximum of 0.6 MPa. Excessive pressure can affect the lifespan of the valve cylinder

Due to the varying actual conditions of different enterprises, the operating conditions of instrument air also differ; therefore, specific requirements must be specified when ordering valves, so that manufacturers can make appropriate configurations and enhance the suitability of the valves. I. Requirements on the demand side mainly include: 1. The quality of instrument air, its moisture content, and the pipelines used for transporting it. Due to the moisture present in instrument air, if the pipelines are made of carbon steel, rust will inevitably form in the instrument air, which can lead to failures in subsequent pneumatic equipment. Therefore, it is necessary to select an appropriate filtration precision for the filters in the pneumatic triple units; generally, the filter precision for valves is 30 mesh ； 2. Instrument air pressure: Different normal operating pressures require cylinders of different diameters; therefore, a relatively accurate value must be provided ； II. Actual conditions: The pressure of the instrument air used by us is generally between 0.4 and 0.7 MPa; valves operate properly within this range. Of course, for valves that use programmable valves to enable metering and shut-off functions, the response time varies depending on the instrument air pressure, and this can affect the accuracy of metering control, so it is important to pay attention to this.