These low cost, very small, though high power sophisticated units are designed for universal use. They have the big advantage of being not sightglass size specific and offer therefore the largest possible respective insight. The series BKVLR is also available in LED-diodes version.

APPLICATION:
- On sightglasses to DIN 28120: From DN 25 upwards
- On sightglasses to DIN 28121: From DN 40 upwards
- On sightglasses to DIN 11851: From DN 50 upwards
- On sightflow indicators
- On rectangular or D-ended sightglasses

MATERIALS:
Series KVL: Corrosion resistant aluminium casting
Series KVLR, BKVLR, BKVLR LED and KLR: Fabricated entirely from stainless steel.

ELECTRICAL DATA:
Supply: AC or DC (with transformer AC only)
Series KVL / KVLR / BKVLR:
Terminal voltage: 24 V (12 V possible with 20 or 50 W)
Nominal rating: 20, 50 or 100 W
Series KLR:
Terminal voltage: 24 V (20, 50 or 100 W), 12 V (20 or 50 W) or 36 up to 240 V (5, 10 or 20 W, with integrated transformer)
Nominal rating: 20 / 50 / 100 W (24 V), 20 / 50 W (12 V), 5 / 10 W (36 up to 240 V, with integrated transformer), 20 W ( 36 up to 240 V, with integrated transformer and momentary push-button)
Series BKVLR LED:
Terminal voltage: 24 V
Nominal rating: 1 W
Standard supply includes push-button for momentary illumination.

ENCLOSURE PROTECTION DEGREE:
Dust and spray water tight, IP 65

OPTIONS:
- "ON-OFF"-switch (Only for 20 W versions with 24 or 12 V supply and for BKVLR LED)
- Continuous operation (dependent on series and wattage)
- Rectangular cable entry (Series KVLR / BKVLR / BKVLR LED / KLR only)

COMPLEMENTARY PRODUCTS:
- External timers and remote transformers are available to cover the whole range
- Sightglasses to DIN 28120, DIN 28121, DIN 11851, sightflow indicators and rectangular or D-ended sightglasses
- Wipers of the series W / WD and WS
- Spraying devices of the series SV / SVS