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Level Devices



The only thing a Murphy level gauge cannot level is the playing field for the competition. Murphy's level devices set the industry standard for superior crankcase oil level maintenance on engines, compressors, pumps and coolers.

Most models adjust to the correct running oil level and replenish oil as it is used, while utilizing an integral, low-level switch, which will operate an alarm or equipment shutdown. Murphy also provides for liquid control in gas scrubber applications and pneumatically controlled dump valves.



 

LM500 / LM500-TF

 

The LM500 series maintains the crankcase oil level of an engine, pump or compressor. Adjusted to the correct running oil level, it will replenish oil as it is used. If the clean oil supply is depleted and oil level continues to fall, the low-level switch will operate an alarm or equipment shutdown.

The Murphy LM500-TF Oil Level Maintainer includes a test feature that confirms both the float and switch are operating correctly with a single press of the test button.

•   Test Feature (TF) allows test of float and switch
•   Direct Mount (DM) capable
•   Eliminates under/overfill due to “human error”
•   See oil level and condition without shutting down
•   Simple installation
•   Automatically maintains lube level
•   Low level, 3-wire, snap-action switch
•   Positive sealing Thumb-Valve™


Click here to see product specifications and current literature.

 

 

 

LM300 Series

 

The LM300 Series Level Maintainer automatically adds oil to the crankcase as needed to keep the lube level normal. Most models have built-in switches that will alarm and/or shut down the equipment if the makeup supply is depleted and engine oil level falls or if overfill conditions exist.

The LM300 Series can be used in engines, compressors, pumps and coolers. The explosion-proof LM300-EX Series models are CSA certified for Class I, Division 1 Hazardous areas.

•   Maintains proper lube level
•   Shutdown on low level, or high and low level
•   Low level alarm before shutdown
•   Manual float switch test
•   High visibility “Frog Eye” lens
•   Optional pipe or universal mounting brackets
•   Optional inlet orifices for low to high pressure applications
•   Explosion-proof models available


Click here to see product specifications and current literature.

 

 

 

Scrubber Level Systems

 

The Scrubber Level System includes the following:

1)   LS200 High Level Shutdown Switch
2)   DVU Series Dump Valve
3)   Filter Regulator with MurphyGage®
4)   LS200NDVOR Pneumatic Level Control

 

The SLS system provides for liquid control in gas scrubber applications, by dumping liquids to drain and protecting compressors with a high liquid level switch. Wetted metal parts are made to survive constant use in corrosive environments.

•   Designed for harsh gas compressor scrubber applications
•   304 stainless steel float operates in 0.63 specific gravity for heavier fluids
•   Rated for up to 2000 psi (13.8 MPa) [138 bar] working pressure
•   Electric and pneumatic models available
•   Hex union allow plug and seat replacement without piping removal
•   For separators/scrubbers to 2000 psi (13.8 MPa) [138 bar] vessel pressure
•   Operates on 30-70 psi (207-483 kPa) [2.07-4.83 bar] control pressure
•   Manual valve operator


Click here to see product specifications and current literature.

 

 

 

DVU Series Dump Valves

 

The DVU Series are pneumatically controlled dump valves. The valves open and close automatically by pneumatic control from a Murphy level controller and dump valve operator. Designed for gas compressor scrubbers, the DVU Series can be used to dump any liquids compatible with its materials of construction.

Diaphragm actuated, the DVU series dump valves operate at 30–70 psi (207–483 kPa) [2.07–4.83 bar] and up to 2000 psi (13.8 MPa) [138 bar] vessel pressure (depending on the model).

•   For Separators/Scrubbers to 2000 psi (13.8 MPa) [138 bar] working pressure
•   Hex union allows plug and seat replacement without piping removal
•   Operates on 30–70 psi (207–483 kPa) [2.07–4.83 bar] control pressure
•   Compatible with Murphy level controls
•   Soft seat valve
•   Manual valve operator


Click here to see product specifications and current literature.

 

 

 

LR500 Series

 

The LR500 Series Level Regulators automatically add oil to a lubricator to maintain the factory-recommended level. This function eliminates the need for manual checks and refills. Models LR579 and LR589 are for Lincoln lubricators, and the LR589NC is the normally closed-wired version of the LR589.

Each model has a low-level shut-down switch to protect equipment when oil supply is lost. If the lubricator oil level drops below the minimum operations level, the low-level switch will operate an alarm and/or shut down the equipment.

•   Unique anti-clog thumb-valve
•   Regulates oil flow from reservoir to keep lubricator full
•   Eliminates manual oil check and refill time
•   Low-level shutdown switch
•   Reduce engine and pump repairs caused by low lube level


Click here to see product specifications and current literature.

 

 

 

LR857

 

Murphy LR857 Lube Level Regulator maintains the crankcase oil level of an engine, pump or compressor. Adjusted to the correct running oil level, the LR857 will replenish oil as it is used. An integral, low-level switch will alarm and/or shut down the equipment, if supply oil is lost and the equipment continues to use oil.

The LR857 maintains oil level on any size engine but is recommended for small-to-medium volume applications and installations that require a three-wire, snap-action switch.

•   Eliminates under/overfill due to “human error”
•   Simple installation
•   Automatically maintains lube level
•   Low level switch
•   Models to fit varied applications
•   Positive sealing thumb-valve


Click here to see product specifications and current literature.