Linear flow control DML Dungs
- These motor valves DML are used for controlling the supply to gas burners and equipment. The wide control range is obtainable by selecting the controller cylinder and adjustable main volume restrictor.
- DML is used together with actuators DMA…P, DMA… Q, DMA… A.
- The motor restrictor is is available in two thread sizes: housing 507/510 Rp 1 and housing 515/520 Rp 2.
- Max. operating pressure: 500 mbar and max. differential pressure: 100 mbar.
- If the operating voltage (auxiliary power) is interrupted, the actuator remains in its current position.
- Free of non-ferrous metals, suitable for gases up to max. 0.1 vol. % H2S, dry and for gases of gas families 1, 2, 3 and other neutral gaseous media.
- Further drives are available on request.
Equipment selection
To design the DML, the values listed below must be known:
1) Maximum volume flow Vmax.
2) Pressure loss Δp at maximum volume flow from volume flow pressure differential diagram.
3) Minimum volume flow Vmin.
The controller cylinder is specified from the flow diagram. Check whether the requested maximum volume flow can be reached in the controller cylinder position OPEN
(80o sau 45o) with the available pressure loss and/or which pressure loss Δpmax is requested.
The inlet pressure p1 upstream of the motor restrictor shall be 3 x Δpmax. The inlet pressure p1 is defined by the upstream actuators (pressure controller, valves).
In smaller volume flows, the pressure loss is reduced in upstream equipment and the Δp available for the controller cylinder is increased.
Select the controller cylinder with the largest pressure loss Δpmax (Δp > 10 mbar) for a good controller response.
Technical specifications DML linear flow control
| Type | Code | Rp | pmax (mbar) | pmax differential (mbar) | Actuator angle | Ambient temperature (oC) |
|---|---|---|---|---|---|---|
| Linear flow control DML 507-P | 226835 | Rp 1 | 500 | 100 | approx. 45o | -15÷60 |
| Linear flow control DML 510-P | 226834 | |||||
| Linear flow control DML 515-P | 226836 | Rp 2 | max. 80o | |||
| Linear flow control DML 520-P | 226667 | |||||
| Linear flow control DML 507-Q | 264095 | Rp 1 | 500 | 100 | approx. 45o | -15÷60 |
| Linear flow control DML 510-Q | 264094 | |||||
| Linear flow control DML 515-Q | 264093 | Rp 2 | max. 80o | |||
| Linear flow control DML 520-Q | 264092 |
Dimensions linear flow control DML (mm)
| Type | A | B | C | D | E | F | G | H | Weight (kg) |
|---|---|---|---|---|---|---|---|---|---|
| Motor valve DML 507-P | 134 | 75 | 120 | 60 | 70 | 12 | 75 | 29 | 1.4 |
| Motor valve DML 510-P | 134 | 75 | 120 | 60 | 70 | 12 | 75 | 29 | 1.4 |
| Motor valve DML 515-P | 134 | 75 | 120 | 60 | 70 | 12 | 75 | 29 | 1.2 |
| Motor valve DML 520-P | 134 | 75 | 120 | 60 | 70 | 12 | 75 | 29 | 1.2 |
| Type | A | B | C | D | E | F | G | H | I | J | K | L | Weight (kg) |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Motor valve DML 507-Q | 134 | 75 | 120 | 136 | 90 | 12 | 75 | 30 | 122 | 40 | 52 | 76 | 1.4 |
| Motor valve DML 510-Q | 134 | 75 | 120 | 136 | 90 | 12 | 75 | 30 | 122 | 40 | 52 | 76 | 1.4 |
| Motor valve DML 515-Q | 134 | 75 | 120 | 136 | 90 | 12 | 75 | 30 | 122 | 40 | 52 | 76 | 1.2 |
| Motor valve DML 520-Q | 134 | 75 | 120 | 136 | 90 | 12 | 75 | 30 | 122 | 40 | 52 | 76 | 1.2 |
Main quantity restrictor on DML
Turn the adjusting screw clockwise to reduce the aperture of the rotary slide valve. The pressure gradient across the motorised flow restrictor begins to increase.
Turn the adjusting screw anticlockwise to reduce the pressure gradient across the motorised flow restrictor.
The motorised flow restrictor can be adapted on site in this way. Condition as delivered from factory: main quantity restrictor open.
Flow diagram DML
- For more drawings or details access the operation manual.
For the images that aren't clear move the mouse over them to zoom.
Prices
| Code | Type | Prices without VAT |
|---|---|---|
| 226835 | Linear flow control DML 507-P | 0.00 |
| 226834 | Linear flow control DML 510-P | 0.00 |
| 226836 | Linear flow control DML 515-P | 0.00 |
| 226667 | Linear flow control DML 520-P | 0.00 |
| 264095 | Linear flow control DML 507-Q | 0.00 |
| 264094 | Linear flow control DML 510-Q | 0.00 |
| 264093 | Linear flow control DML 515-Q | 0.00 |
| 264092 | Linear flow control DML 520-Q | 0.00 |
In case the price is missing or for a list of discounts contact
us directly to receive an offer.