Dwyer L4 Series Offers

Features

• A unique magnetically actuated switching design gives superior performance
• There are no bellows, springs, or seals to fail. Instead, the free-swinging float attracts a magnet within the solid metal switch body, actuating a snap switch by means of a simple lever arm
• Float arm hinge design limits the arm angle to prevent vertical hang up

• Service: Liquids compatible with wetted materials
• Wetted Materials: Float and Rod: 316SS; Body: Brass or 316SS standard; Magnet Keeper: 430SS standard, 316SS or Nickel optional
• Temperature Limits: -4 to 275°F (-20 to 135°C) standard. MT high temperature option 400°F (205°C), (MT option not UL, CSA, ATEX or SAA)
• Pressure Limit: Brass body 1000 psig (69 bar), 316SS body 2000 psig (138 bar). Standard float rated 100 psig (6.9 bar). For other floats see options on Options/Accessories page
• Switch Type: SPDT snap switch standard, DPDT snap switch optional
• Electrical Connection: UL and CSA models: 16 AWG, 6" (152 mm) long. ATEX and SAA units: terminal block
• Process Connection: 1-1/2" male NPT standard, 2-1/2" male NPT required for optional floats
• Mounting Orientation: Horizontal installation standard, optional vertical top mount
• Specific Gravity: 0.7 minimum with standard float

• Weight: 4 lb 9 oz (2.07 kg)
• Deadband: 3/4" (19 mm) for standard float

• Direct pump control for maintaining level
• Automatic tank dump operations
• Control levels or provide alarms in sumps, scrubber systems, hydro-pneumatic tanks, low pressure boilers, and various wastewater/sewage treatment processes