Maximator 3/3-Port Directional Control Valve
The 3/3 port directional control valve is a comprehensive set of mechanical units that allow operation of up to 1,000 bar pressure rating. It is generally mounted into an electronic control system, which functions for simple, fast, and constant regulation of the variable flow and pressure condition in gases and fluids. This assembly permits handling of components at increased level of repeating precision. It is constructed in a range of sizes including NG 4 and 10. Its setup can be utilized with or without the integration of a pilot-controlled hydraulic supply.
Structure:
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Valve box
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Attached control valve for actuation of the main valve
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Main valve unit with seals, piston and reset spring
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Pressure-resistant distance sensor to check main valve stroke
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Pressure transducer (external) optional
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Control electronics (external)
The pilot control hydraulic supply includes:
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Pressure accumulator
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Safety appliance
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Oil storage tank, pressure transducer
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Pressure controller with customer-specified connection G x”
The hydraulic control valve is mounted to the pressure-tight valve box. The valve box is closed by a valve lid and a cylinder lid. The distance sensor is mounted to the cylinder lid.
Part numbers and descriptions:
| Type | Order Code | Pressure Range |
A | B | C |
|---|---|---|---|---|---|
| NG 4 with control card, plate connection | 3920.0261 | 750 Bar | 281 | 179 | 82 |
| NG 4 with OBE, plate connection | 3920.4242 | 750 Bar | 285 | 181 | 82 |
| NG 4 with control card, tube connection | 3920.0804 | 750 Bar | 281 | 184 | 82 |
| NG 4 with OBE, tube connection | 3920.3687 | 750 Bar | 285 | 186 | 82 |
| NG 4 with IAC-R Servo valve, plate connection | 3920.6240 | 750 Bar | 285 | 213 | 80 |
| NG 10 with control card, plate connection | 3920.0994 | 750 Bar | 316 | 238 | 102 |
| NG 10 with OBE, plate connection | 3920.5630 | 750 Bar | 316 | 229 | 102 |
| NG 4 with control card, plate connection | 3920.2552 | 1000 Bar | 281 | 179 | 82 |
| NG 4 with OBE, plate connection | 3920.5859 | 1000 Bar | 285 | 181 | 82 |
| NG 4 with ATEX approved servo valve, plate connection | 3920.6521 | 1000 Bar | 309 | 222 | 82 |
| NG 10 with control card, plate connection | 3920.2553 | 1000 Bar | 316 | 238 | 102 |
| NG 10 with OBE, plate connection | 3920.5177 | 1000 Bar | 316 | 229 | 102 |
Connection Plate
| Type | 750 Bar | 1000 bar |
|---|---|---|
| NG4 | 3920.1517 | 3920.7105 |
| NG10 | 3520.0155 | 3920.0208 |
Function
The valve is a metallic seal 3/3 way – seat valve. The opening and closing takes place by means of a hydraulic actuated set piston
Normal-Position
After switching on the hydraulic and electric supply the set piston moves into the normal-position of the valve. No pressure increasing takes place. A to R open
Pressure increasing
The set piston moves to the right site and closes the R-Medium return line and opens the P-Medium Inlet. The pressure increasing takes place. from P to A
Pressure decreasing
The set piston moves to the left site and closes the G-Medium Inlet and opens the R-Medium Return. The pressure decreasing takes place. from A to R
