Here is just a sampling of the many quality Frank W. Murphy products available from Blue Ridge Diesel Injection.  Click on one of the images below to view information about each type of product.  If you don’t see what you need, or need a catalog about the many products offered by F.W. Murphy Co., feel free to contact us about your particular application and how you wish to protect your engine!  To view .pdf files of sales and technical bulletins, follow this link: http://www.fwmurphy.com/products/index.htm

TATTLETALE Annunciators and Magnetic Switches

TATTLETALE® annunciators and Magnetic Switches are the nerve centers that translate SWICHGAGE® contact operations into decisions and operate the alarm orshutdown device. They are the electrical load carrying devices for the alarm or shutdown device. TATTLETALE® annunciators indicate which monitored function failed leading to the alarm or shutdown whereas magnetic switches do not. Magnetic switches operate basically as a latching relay.

MANUFACTURING QUALITY

All around the world people depend on Murphy. Our quality controls and instrumentation are at work insuring reliable operations for oil and gas production and transmission, original equipment manufacturing, irrigation and agriculture, power generation, work and pleasure boating-most any application involving engines or their driven equipment.

Pressure SWICHGAGE®

20P and 25P Series

Features

  • Combination Indicating Gage and Limit Switch
  • Critical Pressure Limit Switch Is Visible and Adjustable (Most models)
  • Switch Can Activate Alarms and/or Shut Down Equipment
  • Exceeds SAE Standards
  • CE Listed Models Available

Description

The 20P Series (2 inch/51 mm dial) and the 25P Series (2-1/2 inch/64 mm dial) SWICHGAGE® models are diaphragm activated, pressure indicating gages, with built-in switches. These switches are used for tripping alarms and/or shut-down devices.

The gage pointer acts as a pressure indicator and as one switch pole which completes a circuit when it touches the adjustable limit contact. Contacts have a self-cleaning motion to ensure electrical continuity.

Ranges available from 0-7 psi (45 kPa) [0.48 bar] thru 0-400 psi (2.8 MPa) [28 bar].

The gage mechanism is enclosed in a steel case coated to resist corrosion. A polycarbonate, break resistant lens and a polished, stainless steel bezel help protect this rugged, built-to-last instrument. An environmentally sealed (A-Series) version is available.

Accuracy and protection from moderate overpressure is assured by a unique, unitized diaphragm chamber. A built-in pulsation dampener helps eliminate pointer flutter and is removable for cleaning.

Models 20PE and 25PE have internal snap-acting SPDT switches (factory-set switching).

Gage-only models, without contacts (MURPHYGAGE®) are also available.

Applications

The SWICHGAGE® was designed to protect engines/equipment in:
Oil Field

  • Marine
  • Irrigation
  • Construction
  • Mobile Equipment

 

Engine Level Coolant SWICHGAGE®

L150 and EL150K1 Series

Features

  • Monitors Level of Coolant, Lube Oil, Diesel Fuel and Hydraulic Fluid
  • Combination Indicating Gage and Low Limit Switch
  • Float Operated
  • Explosion-proof Model Available
  • CSA and CE Listed Models Available

Description

The L150 and EL150K1 series level SWICHGAGE® is a combination liquid level gage and low limit switch; each unit includes (1) a chamber with pivotal float, (2) an indicating dial with pointer, and (3) a low level contact. When properly installed and maintained, the float operates the pointer which, in turn, both indicates level during normal operating, and closes a switching circuit if the level falls to the low-limit set point.

Explosion-proof version of EL150K1 is available.

Applications

The primary use of the L150 and EL150K1 is for engine cooling systems, surge or expansion tanks, condensor radiator or vapor phase systems, pressurized or atmospheric systems. The level SWICHGAGE® can also be used to monitor lube oil, hydraulic fluid or diesel fuel reservoirs and activates alarms and/or shutdown at a predetermined minimum level.

These instruments are built for low pressure systems with a maximum of 25 psi (172 kPa) [1.72 bar].

Universal Engine Panels

WD100 Series

  • Well suited for mobile equipment or stationary power units.
  • Enclosed panel available with two or three SWICHGAGE® instruments for alarm and/or shutdown, and a TATTLETALE® Magnetic Switch.
  • Supplied with pressure hose and fittings for easy installation.
  • Universal mounting bracket. May be mounted vertically or horizontally. The gimbal mounting bracket allows you to rotate or tilt the panel.

WD300 Series

  • Semi-enclosed panel for diesel engines with oil pressure and water temperature SWICHGAGE® instruments, TATTLETALE® Magnetic Switch and emergency stop push button
  • Comes with SV-Series diesel fuel shutoff valve
  • WD300LV is less fuel valve for engine with built-in ETR fuel solenoid, battery ignition engines, RP Series shutdown solenoids.