PARKER control valve ACSP010ABMX in stock

Brand

PARKER/American Parker

Application Areas

Chemical, Petroleum, Mining, Road/Rail/Marine, Integrated

PARKER control valves consist of two main assemblies: the valve body assembly and the actuator assembly (or actuator system), divided into four main series: single-seat series control valves, double-seat series control valves, sleeve series control valves, and self-operated series control valves. Variations of these four types of valves can lead to many different applicable configurations, each with its own specific applications, characteristics, advantages, and disadvantages. While some control valves have a wider range of applications than others, control valves are not suitable for all conditions; the best solutions for enhancing performance and reducing costs are built together.

PARKER Control Valve Features

Control valves come in various types, each with different applications. Therefore, the appropriate control valve type should be selected based on the requirements of the production process.

Pneumatic control valves are divided into air-to-open and air-to-close types. Air-to-open control valves close in fault conditions, while air-to-close control valves open in fault conditions. Auxiliary equipment can be used to form position-holding valves or to enable self-locking of control valves, meaning that in the event of a fault, the control valve maintains the valve opening degree before the fault.

Air-to-open and air-to-close mechanisms can be achieved through combinations of direct and reverse-acting actuators and direct and reverse-body valves. When using a valve positioner, this can also be achieved.

Various control valves have different structures and characteristics.

PARKER control valves come in many body types, commonly including straight-through single-seat, straight-through double-seat, angle, diaphragm, low-flow, three-way, eccentric rotary, butterfly, sleeve, and ball valves. When selecting a valve, the following considerations should be taken into account:

Primarily based on the selected flow characteristics and unbalanced forces.

When the fluid medium is a suspension containing a high concentration of abrasive particles, the internal material of the valve must be rigid.

Due to the corrosiveness of the medium, valves with simple structures should be selected whenever possible.

When the temperature and pressure of the medium are high and fluctuate greatly, valves whose valve core and seat materials are less affected by temperature and pressure changes should be selected.

Flash and cavitation only occur in liquid media. In actual production processes, flashing and cavitation can generate vibration and noise, shortening the valve's service life. Therefore, when selecting valves, it is essential to prevent flashing and cavitation.

PARKER pressure control valves are available in hydraulic and pneumatic versions, but their operating principles are almost identical. Here, we will discuss the hydraulic version.

Valve Structure:

1—Adjusting Screw; 2—Valve Body; 3—Pressure Adjusting Spring; 4—Deflector Plate; 5—Cone Valve; 6—Damping Piston

Functions:

The damping piston serves two purposes: first, it dampens the cone valve during opening and closing, improving the valve's pressure regulation stability; second, it guides the cone valve, improving its sealing performance.

The deflector plate has an annular groove to change the direction of fluid flow at the cone valve's outlet. This results in a hydraulic force acting on the deflector plate, which is opposite to the spring force and increases with the overflow rate. When the overflow rate increases, the cone valve opening widens, causing the spring force to increase. However, because the hydraulic force also increases simultaneously, the structure offsets the increase in spring force. Therefore, the inlet pressure of this type of valve is unaffected by flow rate changes, its p-Q characteristic curve is relatively ideal, and its opening and closing characteristics are good, which is beneficial for increasing the valve's rated flow rate.

Analysis of the application of control methods for PARKER pressure control valves (USA)

1) Acting as a Parker safety valve (preventing hydraulic system overload): When the relief valve acts as a safety valve, it limits the maximum pressure of the hydraulic system to ensure system safety. Under normal system operation, the valve is closed and does not overflow; the system's working pressure is determined by the external load. When the system pressure reaches the valve's set pressure, the valve opens to overflow, and the system pressure is then determined by the relief valve's set pressure.

2) Acting as a Parker relief valve (maintaining constant hydraulic system pressure): In throttling speed control systems, the relief valve is normally open during normal operation, overflowing excess oil back to the tank to maintain a basically constant hydraulic system pressure.

3) Unloading the Parker hydraulic system: The remote control port of the pilot-operated relief valve is connected to the tank, allowing the system to be unloaded using the relief valve. The DBW-type pilot-operated solenoid relief valve can achieve system unloading using its own solenoid directional valve. Other pilot-operated relief valves require an additional directional valve to be added to the remote control port for system unloading.

4) Remote Pressure Regulation: Connecting a remote pressure regulating valve to the remote control port of the pilot-operated relief valve enables remote pressure regulation.

Furthermore, the relief valve can also be used as a back pressure valve to ensure smooth system operation; in conjunction with a directional valve, it can achieve multi-stage pressure control; in braking circuits, it can provide braking; and in hydraulic test bench systems, it can be used as a loading valve, etc.

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Our company primarily deals in European and American brands, and can source brands from any European country. For example, our key German brands include: BURKERT, DEMAG, HAWE, REXROTH, HYDAC, PILZ relays, FESTO, IFM sensors, E+H, HEIDENHAIN, P+F sensors, SICK, TURCK, HIRSCHMANN industrial switches, Henschler, MURR, SCHMERSAL, SAMSON, and EPRO (a subsidiary of Emerson).

We also source American brands such as MOOG, ASCO solenoid valves, MAC solenoid valves, NUMATICS, PARKER pneumatics and hydraulics, VICKERS, and ROSS. NORGREN (UK)

OMAL (Italy), ATOS (Italy), CAMOZZI (Italy), UNIVER (Italy), CAMORZZI (Italy)