Level Switch – Model L-30

One Inch Flow Switch

The L-30 Level Switch is designed for use in potable water or a wide variety of chemicals. See Chemical Compatibility Chart) The liquid seal is continuously flushed by the working fluid and is available with an Optional Rubber Boot if there is particulate in the water. The L-30 Level Switch has models for horizontal or vertical installations. The L-30 Level Switch uses a 15 amp micro switch (SPDT - Single Pole Double Throw).

  • Super-simple maintenance and checkout for personnel using a standard test meter.
  • High / Low Liquid level alarm
  • Rubber boot option for slurries and particulate
  • Solenoid Valve control
  • Pump Up / Pump Down Control (Use with LC-1)
  • Intrinsically Safe Relay allows Model L-30 to be used in hazardous areas.
  • Connection 1” NPT with 1 x 1 1/4” NPT bushing included
  • Electrical Connection: Cable compression nut (specify grommet size) or “F” ½ inch female pipe thread.
  • Enclosure: NEMA 6P / IP 67
L-30CR L-30R/BOOT
L-30CR/BOOT L-30R
L-30CRV L-30NV/BOOT
L-30CRV/BOOT L-30NV
L-30N L-30N/BOOT

L30CR L30R BOOT
L30CR/BOOT L30R
L30CRV L30NV BOOT
L30CRV/BOOT L30NV
L30N L30N/BOOT

L-30CR L-30RBOOT
L-30CRBOOT L-30R
L-30CRV L-30NVBOOT
L-30CRVBOOT L-30NV
L-30N L-30NBOOT

L30CR L30R/BOOT
L30CR/BOOT L30R
L30CRV L30NV/BOOT
L30CRV/BOOT L30NV
L30N L30N/BOOT

Uses

For use in particle contaminated fluids, such as:

  • Medium Slurries
  • Contaminated Ground Water
  • Sewage
  • Machine Cutting Oils
  • Waste Water

Water Level Control in:

  • Cooling Towers
  • Plating Tanks
  • Washing Tanks
  • Reverse Osmosis
  • Fish Farms
  • Fountains & Pools
  • Aquariums

Models

L-21+ & L-30N (NORYL®)
WORKING PRESSURE: 250 psi max. continuous
WORKING TEMPERATURE: 180˚F max. continuous.
WETTED MATERIALS: Body, Float and Bushing: Noryl® (PPO) (10% glass fibers) screws + shaft: 316 stainless steel or Teflon®
L-30CR (FORTRON®)
WORKING PRESSURE: 250 psi max. continuous
WORKING TEMPERATURE: 200˚F max. continuous.
WETTED MATERIALS: Body, Float and Bushing: Fortron®
(PPO) (40% glass fibers) screws + shaft: HASTELLOY® C

 

L30
Group
L-30CR L-30R/BOOT
L-30CR/BOOT L-30R
L-30CRV L-30NV/BOOT
L-30CRV/BOOT L-30NV
L-30N L-30N/BOOT

Specs

HYSTERESIS (Δ LIQUID LEVEL TO ACTIVATE/DEACTIVATE SWITCH)
≈ ¼” max. travel

ELECTRICAL SWITCH CHARACTERISTICS
SPDT (single pole double throw) 15 A, ½ hp @ 125 or 250VAC ½A @ 125VDC, ¼A @ 250VDC 5A @ 125VAC (Tungsten lamp load) 10,000,000 operations median

Gold Cross Bar Dry Circuit Computer/PLC Interface SPDT Switch Model also available. 0.1A or less, 5–24 VAC/DC.

WORKING FLUID SPECIFIC GRAVITY:
0.8 minimum

WORKING PRESSURE:
75 psi max. operating
100 psi max. non-operating

WORKING TEMP:
200 F (93 C) Maximum

Diagram

L-30-diagrams

Compatible Chemicals

L-30N

  • Acetic Acid
  • Ammonia Liquid 10%
  • Chlorinated Water (Potable)
  • Ethylene Glycol
  • Glycolic acid
  • Hydrochloric acid 20% – 37%
  • Hydrofluoric acid 20%
  • Hydrogen Sulfide Aqueous
  • Mineral Oil
  • Nitric Acid 10%-50%
  • Phosphoric Acid 40%-100%
  • Plating Fluids & Baths
  • Sodium Hydroxide Solution 20%
  • Soy Sause
  • Sulfuric Acid 10%
  • Vinegar
  • Water Distilled
  • Water Fresh
  • Water Mine Acid
  • Water Salt
  • Whiskey & Wine

L-30CR

  • Acetic Acid
  • Ammonia Liquid 10%
  • Benzene
  • Diesel Fuel
  • Ethylene Chloride
  • Ethylene Dichloride
  • Ethylene Glycol
  • Glycolic acid
  • Hydrogen Sulfide Aqueous
  • Lubricants
  • Mineral Oil
  • Phosphoric Acid 40%-100%
  • Propylene Glycol
  • Sodium Hydroxide Solution 20%
  • Sulfuric Acid 10%
  • Water Distilled
  • Water Fresh
  • Water Mine Acid
  • Water Salt
  • Xylene