Murphy Explosion Proof Level Maintainer with Two Switches DPST and 1/4 in. Orifice - Normally Closed - LM303-EX

Availability:
Request Quote
MPN:
15700181
SKU:
77209746
Customer Reviews
SKU:
77209746
Weight:
2.00 LBS
so_moq:
1
so_qi:
1
Estimated Special Order Ship Date:
Special Order (ships approximately 2-3 Weeks)
Special Order Available:
Increments of 1
QPO:
0
MPN:
15700181

The Murphy Explosion Proof Level Maintainer with Two Switches DPST LM303-EX automatically adds oil to the crankcase as needed to keep the lube level normal. This model has a built-in switch that will alarm and/or shutdown the equipment if the makeup supply is depleted and engine oil level falls or if overfill conditions exist. NOTE: Friction losses due to piping NOT considered.

Applications: Engines • Compressors • Pumps • Coolers

 

FEATURES:

  • Maintains proper lube level
  • Shutdown on low level, or high and low level
  • Manual float switch test
  • High visibility “Frog Eye” lens
  • Two switches for low and high level shutdown or alarm. Four wires, DPST, wired N.C. (Normally Closed) in normal operating ranges
  • CSA certified with switch contacts rated at 10 A at 250 V AC (standard)
  • Explosion-Proof

 

PRODUCT SPECIFICATIONS:

  • Part No.: LM303-EX
  • Case/Cover: Die cast aluminum
  • Switch Housing: Aluminum
  • Approval Rating: CSA certified for Class I, Groups C and D; Class II, Groups F and G hazardous locations. Enclosure Type certified.
  • Float: Rigid polyurethane foam. Polyurethane coated
  • Max. Ambient Temperature: 250°F (121°C)
  • Oil Inlet Connection: Top entry 1/2-14 NPT with built-in filter screen (removable for cleaning)
  • Inlet Orifices: 1/4 in. (6 mm); Pressure: 4 ft. oil – 15 ft. oil (1.2 m oil – 4.6 m oil); Flow Rates: 4.7 GPH - 31.0 GPH (17.8 LPH - 117.3 LPH)
  • Wire (switch models): 18 AWG x 13 in. (1.0 mm2 x 330 mm)
  • Max. Inlet Pressure (MIP): 15 ft oil (4.6 m oil) with 1/4 in. (6 mm) orifice.
  • Max. Differential: 2 in. (51 mm) between running and stationary oil level
  • Max. Case Pressure (MCP): 15 psi (103 kPa) [1.03 bar]
  • Orifice Seal: Buna-N Thumb-Valve
  • Switch Contact: Silver, SPDT snap acting, rated at 10 A @ 125, 250 VAC; 10 A @ 30 VDC. (1 only for low level; 2 only for high and low; or 2 only for low level with alarm before shutdown)
  • Flow Rate Test: Using SAE 30 @ 32°F (0°C)
  • Outlet Connection: 3/4-14 NPT left side, right side, and bottom
  • Crankcase Balance Vent Fitting: 1/2-14 NPT
  • Mounting: Accepts Murphy pipe mounting bracket or universal mounting bracket
  • Lens: Clear “Frog Eye” non-staining, high impact, high temperature nylon; UV and heat stabilized
  • Dial: High visibility white background with green and white “index” lines for normal level indication.
  • Test Knob: Rotate to test switch operation. Turn clockwise for low level test and turn counterclockwise for high level test
  • Shipping Weight: 6 lbs. 12 ozs. (3.06 kg)
  • Shipping Dimensions: 10-5/8 x 8-7/8 x 6-3/4 in. (270 x 225 x 171 mm)


Product Condition: NEW
Murphy Explosion Proof Level Maintainer with Two Switches DPST for Low and High Level Shutdown or Alarm LM303-EX

Shop Products

“More than just a parts website. The account manager helped us plan ahead with inventory so we could avoid disruptions with our production schedule. Their engineering resources were available to assist with our application requirements. Highly recommend this team!”
— Satisified Customer

CAN'T FIND THE PART YOU NEED?

Shoot us an email or call (503) 802-1370

Contact Us