Артикул: RX7317
2-way cartridge valves, pressure functions LFA..DBEM (high-pressure)
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Description
Features
- Control cover for pressure function
Product description
General
2-way cartridge valves for pressure functions are pilotoperated valves in seat or spool design. The power section designed as cartridge valve (1) is installed into a receiving hole standardized according to ISO 7368 and closed with a control cover (2).
The pilot control valve (4) for manual or electrically proportional pressure adjustment is integrated into the control cover (2) or is installed on the control cover (2).
By combination of cartridge valves with the control covers, different pressure functions can be realized.
Pressure limiting function
The cartridge valve (1) for the pressure relief function (type LC . DB...) is designed as seat valve without area difference (no effective area at port B). The effective pressure at port A is directed via the pilot oil supply orifice (5) to the spring side (6) of the element. Under the pressure set at the pilot control valve (4), the spool (3) is pressure-compensated and closed by the spring force. On reaching the set pressure, the spool (3) is opened and the pressure at port A is limited according to the pressure-flow characteristics.
Type code
| 01 | 02 | 03 | 04 | 05 | 06 | 07 | 08 | 09 | 10 | 11 | 12 | 13 | ||
| LFA | DBEM | - | 7X | / | 450 | P |
| Type | ||
| 01 | Control cover LFA | LFA |
| Size | ||
| 02 | NG 16 | 16 |
| NG 25 | 25 | |
| NG 32 | 32 | |
| NG 40 | 40 | |
| NG 50 | 50 | |
| Version | ||
| 03 | Control cover "DBEM" with electrically proportional pressure adjustment, with maximum pressure limitation | DBEM |
| Adjustment types of the pressure relief valves | ||
| 04 | Rotary knob | 1 |
| Internal hexagon | 2 | |
| Component series | ||
| 05 | Component series 70 … 79 (70 … 79: unchanged installation and mounting dimensions) 1) | 7X |
| Series | ||
| 06 | High-pressure series | 450 |
| Adjustment of the pressure relief valves | ||
| 07 | No pressure rating set | no code |
| Pressure relief valve set to pressure rating | - | |
| Type-examination tested safety valve according to Pressure Equipment Directive 2014/68/EU installed | E | |
| Pressure relief valve set to pressure rating and sealed | P | |
| Set pressure / response pressure (information not applicable to version "no code" in item 07) | ||
| 08 | 410 bar | 410 |
| 420 bar | 420 | |
| 430 bar | 430 | |
| 440 bar | 440 | |
| 430 bar | 450 | |
| Seal material | ||
| 09 | H-ECOPUR | P |
| Observe compatibility of seals with hydraulic fluid used. (Other seals upon request) | ||
| Nozzle fitting | ||
| 10 | Orifice in channel X 2) | X.. |
| 11 | Orifice in channel P 2) | P.. |
| 12 | Orifice in channel F 2) | F.. |
| 13 | Orifice in channel D 2) | D.. |
| 1) Component series 7X for sizes 16…50 | |
| 2) This orifice is designed as screw-type orifice. If an orifice is to be installed, the respective code letter with the orifice Ø in 1/10 mm has to be entered in the type designation. | |
| Example: D10 = Orifice with Ø1.0 mm in channel D. Additional orifice Ø see diagrams/characteristic curves. |
| Size | Orifice in the channel | |||
| X | P | F | D | |
| 16 | X08 | - | F10 | - |
| 25 | X08 | - | F10 | - |
| 32 | - | - | F12 | D10 |
| 40 | X10 | - | F12 | - |
| 50 | X20 | P10 | F15 | - |
| 1) This orifice is designed as screw-type orifice. If an orifice is to be installed, the respective code letter with the orifice Ø in 1/10 mm has to be entered in the type designation. | |
| Example: D10 = Orifice with Ø1.0 mm in channel D. Additional orifice Ø see diagrams/characteristic curves. |
| Orifice symbol | Symbol in ordering code | |||
| A** |  | A** |  | This orifice is designed as screw-type orifice. If an orifice is to be installed, the respective code letter with the orifice Ø in 1/10 mm has to be entered in the type designation. Example: A12 = Orifice with Ø1.2 mm in channel A. |
| Ø1,2 |  |  | This orifice is designed as bore. No specifications are made in the type designation. (Orifice Ø in mm) | |
| Z12 |  |  | This orifice is designed as screw-type orifice. This is a standard orifice. No specifications are made in the type designation. (Orifice Ø in 1/10 mm) | |
Technical data
| Hydraulic fluid | Classification | Suitable sealing materials | Standards | Data sheet | |
| Mineral oils | HL, HLP | H-ECOPUR | DIN 51524 | 90220 | |
| Bio-degradable | Insoluble in water | HETG | H-ECOPUR | ISO 15380 | 90221 |
| HEES | H-ECOPUR | ||||
| Flame-resistant | Water-free | HFDU (glycol base) | H-ECOPUR | ISO 12922 | 90222 |
| HFDU (ester base) | H-ECOPUR | ||||
| Important information on hydraulic fluids:
Bio-degradable and flame-resistant: If this hydraulic fluid is used, small amounts of dissolved zinc may get into the hydraulic system. | |||||
(For applications outside these values, please consult us!)
Diagrams/characteristic curves
| Orifices (conical) | |||||||||
| Orifice Ø in mm | Order numbers | Material numbers | |||||||
| M6 conical | M8 x 1 conical | G 1/8 conical | G 1/4 conical | G 3/8 conical | G 1/2 conical | G 3/4 conical | G 1 conical | ||
| – | 00 | – | – | – | – | – | – | - | – |
| 0,5 | 05 | R913040356 | R913017600 | R913030187 | R913040456 | – | – | - | – |
| 0,6 | 06 | R913040358 | R913017605 | R913017606 | R913020197 | – | – | - | – |
| 0,7 | 07 | R913040360 | R913017609 | R913046092 | – | – | – | - | – |
| 0,8 | 08 | R913029447 | R913017614 | R913017616 | R913017615 | R913040481 | R913040499 | - | – |
| 1,0 | 10 | R913019186 | R913017621 | R913024679 | R913017622 | R913040484 | R913040500 | - | – |
| 1,2 | 12 | R913040362 | R913017627 | R913017629 | R913017628 | R913040486 | R913040501 | - | – |
| 1,5 | 15 | R913028337 | R913017637 | R913017639 | R913017638 | R913040488 | R913028317 | - | – |
| 1,8 | 18 | R913030186 | R913017644 | R913017646 | R913017645 | R913040489 | R913045913 | - | – |
| 2,0 | 20 | R913029870 | R913017651 | R913040450 | R913017652 | R913028417 | R913028336 | R913017835 | – |
| 2,5 | 25 | R913032543 | R913035796 | R913017656 | R913019582 | R913040493 | R913040502 | - | – |
| 3,0 | 30 | R913040368 | R913017661 | R913017663 | R913017662 | R913018266 | R913040503 | R913040476 | R913040467 |
| 3,5 | 35 | – | R913017667 | R913040452 | R913040463 | R913028318 | R913019856 | R913040477 | R913040469 |
| 4,0 | 40 | – | R913017670 | R913027078 | R913040464 | R913018265 | R913029168 | R913040478 | R913040470 |
| 4,5 | 45 | – | R913046571 | R913017671 | R913040465 | – | R913040506 | R913043806 | – |
| 5,0 | 50 | – | – | R913017673 | R913040468 | R913023871 | R913019857 | - | R913040471 |
| 5,5 | 55 | – | – | R913027077 | – | R913040495 | R913053659 | R913040479 | – |
| 6,0 | 60 | – | – | – | – | R913023870 | R913028418 | R913017674 | R913020247 |
| 7,0 | 70 | – | – | – | R913040461 | R913017675 | R913040509 | - | – |
| 7,5 | 75 | – | – | – | – | R913023430 | – | R913034192 | R913018328 |
| 8,0 | 80 | – | – | – | – | R913046570 | R913040510 | R913040482 | R913020246 |
| closed | 99 | R913019128 | R913019129 | R913019137 | R913019136 | R913019138 | R913019139 | R913032612 | R913019140 |
Other orifices upon request.
| Plug screws | |
| Thread | Tightening torque MA in Nm ±10 % |
| G 1/8 | 18 |
| G 1/4 | 45 |
| G 3/8 | 83 |
| G 1/2 | 120 |
| G 3/4 | 175 |
| G 1 | 270 |
Symbols/Circuit diagrams
Dimensions
| 1 | Port X (external) as threaded port |
| 2 | Port Z2 (external) as threaded port |
| 3 | Locating pin |
| 4 | Adjustment type "2" |
| 5 | Adjustment type "1" |
| 6 | Name plate |
| 7 | Lock nut SW17 |
| 8 | Porting pattern according to ISO 4401-03-02-0-05 |
| 9 | Pressure relief valve type DBD.4K…, data sheet 25710 |
| 10 | Proportional pressure relief valve type DBETA..., separate order |
| 11 | Port Y (external) as threaded port |
| 1 | Port X (external) as threaded port |
| 2 | Port Y (external) as threaded port |
| 3 | Locating pin |
| 4 | Adjustment type "2" |
| 5 | Adjustment type "1" |
| 6 | Name plate |
| 7 | Lock nut SW17 |
| 8 | Porting pattern according to ISO 4401-03-02-0-05 |
| 9 | Pressure relief valve type DBD.4K…, data sheet 25710 |
| 10 | Proportional pressure relief valve type DBETA..., separate order |
| 1 | Port X (external) as threaded port |
| 2 | Port Z2 (external) as threaded port |
| 3 | Locating pin |
| 4 | Adjustment type "2" |
| 5 | Adjustment type "1" |
| 6 | Name plate |
| 7 | Lock nut SW17 |
| 8 | Porting pattern according to ISO 4401-03-02-0-05 |
| 9 | Pressure relief valve type DBD.4K…, data sheet 25710 |
| 10 | Proportional pressure relief valve type DBETA..., separate order |
| 11 | Port Y (external) as threaded port |
| 12 | Port Z1 (external) as threaded port |
| LFA control cover mounting screws | |||
| Hexagon socket head cap screws ISO 4762 - 10.9-flZn/nc/480h/C | |||
| Size | Dimensions | Material number | Tightening torqueMA in Nm ±5 % |
| 16 | M8 x 45 | R913015799 | 30 |
| 25 | M12 x 50 | R913015611 | 90 |
| 32 | M16 x 60 | R988025669 | 220 |
| 40 | M20 x 70 | R913015698 | 430 |
| 50 | M20 x 80 | R913008472 | 430 |
Notice:
- The tightening torques stated are guidelines when using screws with the specified friction coefficients and when using a manual torque wrench (tolerance ± 5 %).
- The specified tightening torques were calculated with total friction coefficient μ = 0.09 … 0.14; adjust in case of modified surfaces.
Installation bore and connection dimensions according to ISO 7368
| NG | ØD1H7 | ØD2 | ØD3/(ØD3*) 1) | ØD4H7 | ØD5 2) | ØD6 | ØD7H13 | H1 | H2 | H3 | H4 | H5 | H6 | H7 | H8 | H9 | L1 | L2 | L3 | L4 | L5 | W | Ro 3) | Ru 3) | ||
| mm | mm | mm | mm | mm | mm | mm | mm | mm | mm | mm | mm | mm | mm | mm | mm | mm | mm | mm | mm | mm | mm | mm | mm | |||
| 16 | 32 | 16 | 16 25 | 25 | M8 | 4 | 4 | 42.5 | 56 | + 0.1 | 43 | + 0.2 | 20 | 11 | 2 | 20 | 2 | 0.5 | 65 | 46 | 23 | 25 | 10.5 | 0.05 | 2 | 1 |
| 25 | 45 | 25 | 25 32 | 34 | M12 | 6 | 6 | 57 | 72 | + 0.1 | 58 | + 0.2 | 25 | 12 | 2.5 | 30 | 2.5 | 1 | 85 | 58 | 29 | 33 | 16 | 0.05 | 2 | 1 |
| 32 | 60 | 32 | 32 40 | 45 | M16 | 8 | 6 | 68.5 | 85 | + 0.1 | 70 | + 0.2 | 35 | 13 | 2.5 | 30 | 2.5 | 1.5 | 102 | 70 | 35 | 41 | 17 | 0.1 | 2 | 1 |
| 40 | 75 | 40 | 40 50 | 55 | M20 | 10 | 6 | 84.5 | 105 | + 0.1 | 87 | + 0.3 | 45 | 15 | 3 | 30 | 3 | 2.5 | 125 | 85 | 42.5 | 50 | 23 | 0.1 | 4 | 1 |
| 50 | 90 | 50 | 50 63 | 68 | M20 | 10 | 8 | 97.5 | 122 | + 0.1 | 100 | + 0.3 | 45 | 17 | 3 | 35 | 4 | 2.5 | 140 | 100 | 50 | 58 | 30 | 0.1 | 4 | 1 |
| 1) | Due to the use of a bore with ØD3*, port B protrudes over the upper limit of the area intended in ISO 7368. This is, however, possible due to the sealing concept and reduces the pressure loss during flow through the valve. Thus, we recommend a bore with ØD3*. |
| 2) | Mounting thread for version "/12" see data sheet 08936 |
| 3) | Maximum dimension |
Notice:
The dimensions are nominal dimensions which are subject to tolerances.
Accessories
Orifice selection
Ordering codes
Downloads
 | 2-way cartridge valves, pressure functions Data Sheet | RE21050 | 2003-02-01 | English | PDF | 893k Product Groups: Logic elements - pressure function Type LC (cartridge valves), type LFA (control cover) |
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