Filter regulator LFR, LFRS (NPT)

Filter regulator LFR, LFRS (NPT)

Characteristics
At a glance
Space-saving design with filter and regulator in a single device.
• Two pressure gauge connections for variable installation
• Sizes Mini, Midi, Maxi

Pneumatic connection
Individual fittings can be connected via connecting plates with female threads.

Version

[D] D series, metal

Sturdy in full metal design for the specific requirements of the process automation
industry

Pressure regulation range

Two pressure regulation ranges: 0.5...7 bar and 0.5...12 bar

Grade of filtration
Grade of filtration of 5 µm or 40 µm can be selected.

Pressure gauge
The filter regulator can be ordered with or without a pressure gauge. The interface has a thread of 1/4 NPT or 1/8 NPT.

Function
Direct or pilot actuated pressure regulator with or without integrated return flow function.
The condensate is separated; then the compressed air is filtered. The output pressure is adjustable within the pressure range.

Condensate drain
The following functions can be selected:
• Manual
• Fully automatic, normally closed

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 Filter regulator LFR, LFRS (NPT)

Type code
001 Series 005 Grade of filtration
LFR Filter regulator 40 μm
5M 5 μm
002 Pneumatic connection, inch
1/8 Female thread NPT 1/8 006 Pressure gauge
1/4 Female thread NPT 1/4 O Without pressure gauge
3/8 Female thread NPT 3/8
3/4 Female thread NPT 3/4 007 Size
1/2 Female thread NPT 1/2 MINI Grid dimension 40 mm (without connecting plates)
1 Female thread NPT 1 MIDI Grid dimension 55 mm (without connecting plates)
MAXI Grid dimension 66 mm (without connecting plates)
003 Version
D D series, metal 008 Condensate drain
Manually rotating
004 Pressure regulation range A Fully automatic
0.5 ... 12 bar (0.05 ... 1.2 MPa)
7 0.5 ... 7 bar (0.05 ... 0.7 MPa) 009 Thread type
NPT NPT thread

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Datasheet
General technical data
Size Maxi Midi Mini
Pneumatic connection, port 1 3/4 NPT 1 NPT 3/8 NPT 1/2 NPT 3/4 NPT 1/8 NPT 1/4 NPT 3/8 NPT
Pneumatic connection, port 2 3/4 NPT 1 NPT 3/8 NPT 1/2 NPT 3/4 NPT 1/8 NPT 1/4 NPT 3/8 NPT
Standard nominal flow rate 7,600 ... 8,000 ... 2,400 ... 3,200 l/ 2,600 ... 3,900 l/ 2,600 ... 4,000 l/ 650 ... 900 l/min 1,200 ... 1,500 l/ 1,350 ... 1,700 l/
(standardised to DIN 1343) 10,000 l/min 11,000 l/min min min min min min
Max. pressure hysteresis 0.4 bar 0.2 bar
Condensate drain Fully automatic Fully automatic
Manually rotating Manual, non-detenting
Type of mounting Either:, In-line installation, Via mounting bracket, With accessories Either:, In-line installation, Via mounting bracket
Mounting position Vertical
Grade of filtration 5 µm, 40 µm
Max. condensate volume 80 cm³ 43 cm³ 22 cm³

Function LFR/LFRS (manual condensate drain, with pressure gauge)

Function LFR/LFRS-…-DI-MAXI (manual condensate drain, with pressure gauge)

Function LFR/LFRS (semi- or fully automatic condensate drain, with pressure gauge)

Function LFR/LFRS-…-DI-MAXI (semi- or fully automatic condensate drain, with pressure gauge)

 

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 Filter regulator LFR, LFRS (NPT)

Datasheet
Operating and environmental conditions
Grade of filtration 5 40
Condensate drain Fully automatic Manual, non-detenting Manually rotating Fully automatic Manual, non-detenting Manually rotating
Air purity class at output Compressed air to ISO 8573-1:2010 [6:8:4], Inert gases Compressed air to ISO 8573-1:2010 [7:8:4], Inert gases
Operating pressure 0.2 ... 1.2 MPa 0.1 ... 1.6 MPa 0.2 ... 1.2 MPa 0.1 ... 1.6 MPa
Operating pressure 2 ... 12 bar 1 ... 16 bar 2 ... 12 bar 1 ... 16 bar
Operating pressure 29 ... 174 psi 14.5 ... 232 psi 29 ... 174 psi 14.5 ... 232 psi
Operating medium Compressed air to ISO Compressed air to ISO 8573-1:2010 [-:9:-] Compressed air to ISO Compressed air to ISO 8573-1:2010 [-:9:-]
8573-1:2010 [7:9:-] Inert gases 8573-1:2010 [7:9:-] Inert gases
Inert gases Inert gases
Note on operating and pilot Lubricated operation possible (in which case lubricated operation will always be required)
medium
Ambient temperature 5 ... 60°C, 41 ... 140°F -10 ... 60°C -10 ... 60°C, 14 ... 5 ... 60°C, 41 ... 140°F -10 ... 60°C -10 ... 60°C, 14 ...
140°F 140°F
Media temperature 5 ... 60°C, 41 ... 140°F -10 ... 60°C -10 ... 60°C, 14 ... 5 ... 60°C, 41 ... 140°F -10 ... 60°C -10 ... 60°C, 14 ...
140°F 140°F
Storage temperature -14 ... 140°C, 14 ... -10 ... 60°C -14 ... 140°C, 14 ... -10 ... 60°C, 14 ... -10 ... 60°C -10 ... 60°C, 14 ...
140°F 140°F 140°F 140°F
Corrosion resistance class 2 - Moderate corrosion stress
CRC 1)
1) More information www.festo.com/x/topic/crc

Materials
Material housing Die-cast zinc
Material bowl PC
Note on materials RoHS-compliant
LABS (PWIS) conformity VDMA24364-B1/B2-L

Standard flow rate qn as a function of output pressure p2 (LFR/LFRS-1/4-D-MINI)

Input pressure p1 = 10 bar

Standard flow rate qn as a function of output pressure p2 (LFR/LFRS-1/2-D-MIDI)

Input pressure p1 = 10 bar

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Filter regulator LFR, LFRS (NPT)

Datasheet
Standard flow rate qn as a function of output pressure p2 (LFR/LFRS-1-D-MAXI)
Input pressure p1 = 10 bar

Standard flow rate qn as a function of output pressure p2 (LFR/LFRS-1-D-DI-MAXI)

Input pressure p1 = 10 bar

Internal air consumption qn as a function of input pressure p1 (LFR/LFRS-...-MAXI)

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Dimensions
Dimensions – Filter regulators LFR/LFRS, Mini/Midi/Maxi Download CAD data www.festo.com

[1] Barbed connector for plastic tubing PUN(-H)-8x1.25

[2] Installation dimension
[3] Metal bowl guard
[4] Second pressure gauge connection
[5] Manual condensate drain
[6] Fully automatic condensate drain for plastic tubing PUN-6/PAN-6
[7] Lockable

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Dimensions
B1 B2 B3 B4 B6 D1 D2 D3 D4 D5 D6 D9
@ @ @ @
LFR/LFRS-1/8-D-MINI (A) G1/8
64
LFR/LFRS-1/4-D-MINI (A) 20 76 ~52 40 G1/4 31 M36x1.5 M4 39 5,6 38
LFR/LFRS-3/8-D-MINI (A) 70 G3/8
LFR/LFRS-1/4-D-MIDI (A) G1/4
LFR/LFRS-3/8-D-MIDI (A) G3/8
~85 27,5 ~94,5 ~70 55 50 M52x1.5 M5 39 5,6 52
LFR/LFRS-1/2-D-MIDI (A) G1/2
LFR/LFRS-3/4-D-MIDI (A) G3/4
LFR/LFRS-1/2-D-MAXI (A) 106 31 M36x1.5
G1/2
LFR/LFRS-1/2-D-DI-MAXI (A) 105 49 M52x1.5
96 80
LFR/LFRS-3/4-D-MAXI (A) 106 31 M36x1.5
33 66 G3/4 M5 39 5,6 65
LFR/LFRS-3/4-D-DI-MAXI (A) 105 49 M52x1.5
LFR/LFRS-1-D-MAXI (A) 106 31 M36x1.5
116 91 G1
LFR/LFRS-1-D-DI-MAXI (A) 105 49 M52x1.5

L1 L2 L3 L4 L5 L6 L8 L9 L10 L11 L15 T1 ß1 ß2

min. ±0,2 max. min.
LFR/LFRS-1/8-D-MINI (A)
15
LFR/LFRS-1/4-D-MINI (A) 192,9 40 60 ~69 20 98 60 3 11 3 7 14 22
(19)1)
LFR/LFRS-3/8-D-MINI (A)
LFR/LFRS-1/4-D-MIDI (A)
LFR/LFRS-3/8-D-MIDI (A) 15
250 55 ±0,1 80 99 32 ±0,3 130 60 3 22 5 8 14 24
LFR/LFRS-1/2-D-MIDI (A) (19)1)
LFR/LFRS-3/4-D-MIDI (A)
LFR/LFRS-1/2-D-MAXI (A) 252 82 32 111 3
LFR/LFRS-1/2-D-DI-MAXI (A) 275 ~105 32 135 4
LFR/LFRS-3/4-D-MAXI (A) 252 15 82 32 111 3
66 90 60 22 4 8 14 24
LFR/LFRS-3/4-D-DI-MAXI (A) 275 (19)1) ~105 36 135 4
LFR/LFRS-1-D-MAXI (A) 252 82 40 111 3
LFR/LFRS-1-D-DI-MAXI (A) 275 ~105 41 135 4

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Ordering data
Pressure regulation range 0.5 ... 12 bar, rotary knob with latch, connecting plates with threaded connection, with pressure gauge, outer scale in bar, inner scale in psi
Size Condensate drain Pneumatic con- Grade of filtration Standard nomi- Product weight Part no. Type
nection, port 1 nal flow rate
(standardised to
DIN 1343)
​ ​ ​ ​ ​ ​ ​ ​

Maxi Fully automatic 5 µm 1,178.4 cfm 1,359.382 oz 546469 LFR-D-5M-MAXI-A

40 µm 1,524.07 cfm 1,289.925 oz 546438 LFR-D-MAXI-A
3/4 NPT 5 µm 7,600 l/min 1,370 g 173809 LFR-3/4-D-5M-MAXI-A-NPT
40 µm 9,700 l/min 173805 LFR-3/4-D-MAXI-A-NPT
1 NPT 5 µm 8,000 l/min 1,470 g 173817 LFR-1-D-5M-MAXI-A-NPT
40 µm 10,000 l/min 173813 LFR-1-D-MAXI-A-NPT
Manually rotating 5 µm 1,178.4 cfm 1,359.382 oz 546468 LFR-D-5M-MAXI
40 µm 1,524.07 cfm 1,289.925 oz 546437 LFR-D-MAXI
3/4 NPT 5 µm 7,600 l/min 1,370 g 173808 LFR-3/4-D-5M-MAXI-NPT
40 µm 9,700 l/min 173804 LFR-3/4-D-MAXI-NPT
1 NPT 5 µm 8,000 l/min 1,470 g 173816 LFR-1-D-5M-MAXI-NPT
40 µm 10,000 l/min 173812 LFR-1-D-MAXI-NPT
Midi Fully automatic 5 µm 377.09 cfm 893.025 oz 546462 LFR-D-5M-MIDI-A
40 µm 487.07 cfm 912.87 oz 546426 LFR-D-MIDI-A
3/8 NPT 5 µm 2,400 l/min 900 g 173785 LFR-3/8-D-5M-MIDI-A-NPT
40 µm 3,100 l/min 920 g 173781 LFR-3/8-D-MIDI-A-NPT
1/2 NPT 5 µm 2,600 l/min 900 g 173793 LFR-1/2-D-5M-MIDI-A-NPT
40 µm 3,400 l/min 920 g 173789 LFR-1/2-D-MIDI-A-NPT
3/4 NPT 5 µm 2,600 l/min 900 g 173801 LFR-3/4-D-5M-MIDI-A-NPT
40 µm 3,400 l/min 920 g 173797 LFR-3/4-D-MIDI-A-NPT
Manual, non-de- 3/8 NPT 5 µm 2,400 l/min 900 g 173784 LFR-3/8-D-5M-MIDI-NPT
tenting 40 µm 3,100 l/min 920 g 173780 LFR-3/8-D-MIDI-NPT
1/2 NPT 5 µm 2,600 l/min 900 g 173792 LFR-1/2-D-5M-MIDI-NPT
40 µm 3,400 l/min 920 g 173788 LFR-1/2-D-MIDI-NPT
3/4 NPT 5 µm 2,600 l/min 900 g 173800 LFR-3/4-D-5M-MIDI-NPT
40 µm 3,400 l/min 920 g 173796 LFR-3/4-D-MIDI-NPT
Manually rotating 5 µm 377.09 cfm 893.025 oz 546461 LFR-D-5M-MIDI
40 µm 487.07 cfm 912.87 oz 546425 LFR-D-MIDI
Mini Fully automatic 5 µm 102.13 cfm 456.435 oz 546455 LFR-D-5M-MINI-A
40 µm 117.84 cfm 406.822 oz 546433 LFR-D-MINI-A
1/8 NPT 750 l/min 460 g 173757 LFR-1/8-D-MINI-A-NPT
1/4 NPT 5 µm 1,200 l/min 173769 LFR-1/4-D-5M-MINI-A-NPT
40 µm 1,400 l/min 173765 LFR-1/4-D-MINI-A-NPT
3/8 NPT 5 µm 1,350 l/min 173777 LFR-3/8-D-5M-MINI-A-NPT
40 µm 1,600 l/min 173773 LFR-3/8-D-MINI-A-NPT
Manual, non-de- 1/8 NPT 5 µm 650 l/min 173760 LFR-1/8-D-5M-MINI-NPT
tenting 40 µm 750 l/min 173756 LFR-1/8-D-MINI-NPT
1/4 NPT 5 µm 1,200 l/min 173768 LFR-1/4-D-5M-MINI-NPT
40 µm 1,400 l/min 173764 LFR-1/4-D-MINI-NPT
3/8 NPT 5 µm 1,350 l/min 173776 LFR-3/8-D-5M-MINI-NPT
40 µm 1,600 l/min 173772 LFR-3/8-D-MINI-NPT
Manually rotating 5 µm 102.13 cfm 456.435 oz 546454 LFR-D-5M-MINI
40 µm 117.84 cfm 406.822 oz 546432 LFR-D-MINI

Pressure regulation range 0.5 ... 12 bar, rotary knob with latch, connecting plates with threaded connection, without pressure gauge
Size Condensate drain Pneumatic con- Grade of filtration Standard nomi- Product weight Part no. Type
nection, port 1 nal flow rate
(standardised to
DIN 1343)
​ ​ ​ ​ ​ ​ ​ ​

Maxi Fully automatic 1 NPT 40 µm 10,000 l/min 1,400 g 173815 LFR-1-D-O-MAXI-A-NPT

Manually rotating 3/4 NPT 9,700 l/min 1,300 g 173806 LFR-3/4-D-O-MAXI-NPT
Midi Fully automatic 3/8 NPT 3,100 l/min 830 g 173783 LFR-3/8-D-O-MIDI-A-NPT
1/2 NPT 3,400 l/min 173791 LFR-1/2-D-O-MIDI-A-NPT
Manual, non-de- 3/8 NPT 3,100 l/min 173782 LFR-3/8-D-O-MIDI-NPT
tenting 1/2 NPT 3,400 l/min 173790 LFR-1/2-D-O-MIDI-NPT
3/4 NPT 173798 LFR-3/4-D-O-MIDI-NPT
Mini Fully automatic 1/8 NPT 750 l/min 410 g 173759 LFR-1/8-D-O-MINI-A-NPT
1/4 NPT 1,400 l/min 173767 LFR-1/4-D-O-MINI-A-NPT

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Filter regulator LFR, LFRS (NPT)

Ordering data
Pressure regulation range 0.5 ... 12 bar, rotary knob with latch, connecting plates with threaded connection, without pressure gauge
Size Condensate drain Pneumatic con- Grade of filtration Standard nomi- Product weight Part no. Type
nection, port 1 nal flow rate
(standardised to
DIN 1343)
​ ​ ​ ​ ​ ​ ​ ​

Mini Manual, non-de- 1/4 NPT 40 µm 1,400 l/min 410 g 173766 LFR-1/4-D-O-MINI-NPT
tenting 3/8 NPT 1,600 l/min 173774 LFR-3/8-D-O-MINI-NPT

Pressure regulation range 0.5 ... 7 bar, rotary knob with latch, connecting plates with threaded connection, with pressure gauge, outer scale in bar, inner scale in psi
Size Condensate drain Pneumatic con- Grade of filtration Standard nomi- Product weight Part no. Type
nection, port 1 nal flow rate
(standardised to
DIN 1343)
​ ​ ​ ​ ​ ​ ​ ​

Maxi Fully automatic 3/4 NPT 40 µm 10,000 l/min 1,370 g 173811 LFR-3/4-D-7-MAXI-A-NPT
1 NPT 11,000 l/min 1,470 g 173819 LFR-1-D-7-MAXI-A-NPT
Manually rotating 1,492.64 cfm 1,458.608 oz 546470 LFR-D-7-MAXI
3/4 NPT 10,000 l/min 1,370 g 173810 LFR-3/4-D-7-MAXI-NPT
1 NPT 11,000 l/min 1,470 g 173818 LFR-1-D-7-MAXI-NPT
Midi Fully automatic 329.95 cfm 893.025 oz 546464 LFR-D-7-MIDI-A
3/8 NPT 3,200 l/min 900 g 173787 LFR-3/8-D-7-MIDI-A-NPT
1/2 NPT 3,900 l/min 173795 LFR-1/2-D-7-MIDI-A-NPT
3/4 NPT 4,000 l/min 173803 LFR-3/4-D-7-MIDI-A-NPT
Manual, non-de- 3/8 NPT 3,200 l/min 173786 LFR-3/8-D-7-MIDI-NPT
tenting 1/2 NPT 3,900 l/min 173794 LFR-1/2-D-7-MIDI-NPT
3/4 NPT 4,000 l/min 173802 LFR-3/4-D-7-MIDI-NPT
Manually rotating 329.95 cfm 893.025 oz 546463 LFR-D-7-MIDI
Mini Fully automatic 141.41 cfm 456.435 oz 546457 LFR-D-7-MINI-A
1/8 NPT 900 l/min 460 g 173763 LFR-1/8-D-7-MINI-A-NPT
1/4 NPT 1,500 l/min 173771 LFR-1/4-D-7-MINI-A-NPT
3/8 NPT 1,700 l/min 173779 LFR-3/8-D-7-MINI-A-NPT
Manual, non-de- 1/8 NPT 900 l/min 173762 LFR-1/8-D-7-MINI-NPT
tenting 1/4 NPT 1,500 l/min 173770 LFR-1/4-D-7-MINI-NPT
3/8 NPT 1,700 l/min 173778 LFR-3/8-D-7-MINI-NPT
Manually rotating 141.41 cfm 456.435 oz 546456 LFR-D-7-MINI

Pressure regulation range 0.5 ... 12 bar, directly actuated diaphragm regulator with integrated reverse flow function, rotary knob with latch, connecting plates with threaded connec-
tion, with pressure gauge, outer scale in bar, inner scale in psi
Size Condensate drain Grade of filtration Standard nominal Product weight Part no. Type
flow rate (standard-
ised to DIN 1343)
​ ​ ​ ​ ​ ​ ​

Maxi Fully automatic 40 µm 707.04 cfm 1,587.6 oz 546515 LFR-D-DI-MAXI-A

Manually rotating 546512 LFR-D-DI-MAXI

Pressure regulation range 0.5 ... 7 bar, directly actuated diaphragm regulator with integrated reverse flow function, rotary knob with latch, connecting plates with threaded connec-
tion, with pressure gauge, outer scale in bar, inner scale in psi
Size Condensate drain Grade of filtration Standard nominal Product weight Part no. Type
flow rate (standard-
ised to DIN 1343)
​ ​ ​ ​ ​ ​ ​

Maxi Fully automatic 40 µm 1,194.12 cfm 1,587.6 oz 546518 LFR-D-7-DI-MAXI-A

Manually rotating 546514 LFR-D-7-DI-MAXI

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 Filter regulator LFR, LFRS (NPT)

Peripherals
Filter regulator LFR

Accessories aLink
Type/order code Description
[1] Filter regulator LFR lfr-d
[2] Mounting bracket HFOE 13
[3] Regulator lock LRVS 14
[4] Knurled nut HMR Included in the scope of delivery lfr-d
[5] Padlock LRVS-D 14
[6] Mounting bracket HR-D 13
[7] Pressure gauge MA 13

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Peripherals
Filter regulator LFRS (lockable)

Accessories aLink
Type/order code Description
[1] Filter regulator LFRS lfrs-d
[2] Pressure gauge MA 13
[3] Mounting bracket HFOE 13
[4] Mounting bracket HR-D 13
[5] Knurled nut HMR Included in the scope of delivery lfrs-d

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Accessories
​

Mounting bracket HR-D-R3

​

Material bracket Corrosion resistance Product weight Part no. Type

class CRC 1)
​ ​ ​ ​ ​ ​ ​
​

Steel 3 - high corrosion stress 73 g 4650310 HR-D-R3

1) Corrosion resistance class CRC 3 to Festo standard FN 940070

High corrosion stress. Outdoor exposure under moderate corrosive conditions. External visible parts with primarily functional surface requirements that are in direct contact with a normal industrial environment.

Mounting bracket HFOE-D-MIDI/MAXI

​

Short type code Corrosion resistance class CRC 1) Part no. Type
​ ​ ​ ​ ​ ​
​

HFOE 2 - Moderate corrosion stress 159593 HFOE-D-MIDI/MAXI

1) More information: www.festo.com/x/topic/crc

Filter cartridges, D series, metal

Size Grade of filtration 1) Part no. Type
​ ​ ​ ​ ​

Maxi 5 µm 159641 LFP-D-MAXI-5M

40 µm 363664 LFP-D-MAXI-40M
Midi 5 µm 159594 LFP-D-MIDI-5M
40 µm 363667 LFP-D-MIDI-40M
Mini 5 µm 159640 LFP-D-MINI-5M
40 µm 363665 LFP-D-MINI-40M

1) Grade of filtration 5 μm: colour blue

Grade of filtration 40 μm: colour white

Pressure gauge MA
Pneumatic con- Indicating range Conforms to Product weight Part no. Type
nection standard
​ ​ ​ ​ ​ ​ ​

G1/8 0 ... 10 bar EN 837-1 60 g 359874 MA-40-10-1/8

0 ... 16 bar 345395 MA-40-16-1/8
G1/4 0 ... 10 bar 70 g 183900 MA-40-10-G1/4-EN
359873 MA-50-10-1/4
0 ... 16 bar 356759 MA-50-16-1/4
R1/8 0 ... 10 bar 60 g 162835 MA-40-10-1/8-EN

Flanged pressure gauge FMA

Pneumatic con- Indicating range Conforms to Product weight Part no. Type
nection standard
​ ​ ​ ​ ​ ​ ​

G1/4 0 ... 10 bar EN 837-1 80 g 159596 FMA-40-10-1/4-EN

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Accessories
Flanged pressure gauge FMA
Pneumatic con- Indicating range Conforms to Product weight Part no. Type
nection standard
​ ​ ​ ​ ​ ​ ​

G1/4 0 ... 10 bar EN 837-1 100 g 159599 FMA-50-10-1/4-EN

0 ... 16 bar 80 g 159597 FMA-40-16-1/4-EN
100 g 159600 FMA-50-16-1/4-EN

Regulator lock LRVS

Size LABS (PWIS) conformity Product weight Part no. Type
​ ​ ​ ​ ​ ​

Grid dimension 40 mm VDMA24364-B1/B2-L 40 g 193781 LRVS-D-MINI

(without sub-bases)
Grid dimension 55 mm 60 g 193782 LRVS-D-MIDI
(without sub-bases)
Grid dimension 66 mm 36 g 193784 LRVS-D-DI-MAXI
(without sub-bases) 56 g 193783 LRVS-D-MAXI

Padlock LRVS-D
​

Corrosion resistance LABS (PWIS) conformity Product weight Part no. Type
class CRC 1)
​ ​ ​ ​ ​ ​ ​
​

2 - Moderate corrosion VDMA24364-B1/B2-L 120 g 193786 LRVS-D

stress

1) More information: www.festo.com/x/topic/crc

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