The DC Solenoids and Rack Pullers shown below are our best selling models. Some items are available in both 12 and 24 VDC. If you don't see what you need, please call or email MurCal inside sales and we'll help you find a solution.

If you wish to continue with a credit card purchase, please note the following instructions:

When you are prepared to purchase an item, do not click the "buy" button on this specific page any page that shows multiple items and multiple "buy" buttons, as the item will not be added to your shopping cart from any page at this level. To successfully add an item to your shopping cart, you must drill down to the next level where a single item is shown on a page and click the "buy" button that appears on that page. You will recognize this final level by the larger product image and a more detailed product description.

After clicking the "buy" button on this product page, a new shopping cart page will automatically open and you will see your chosen item in the shopping cart.

The RP75-12 Rack Puller is a 12 volt semi-automatic device that provides a pulling force to initiate shutdown of diesel engines and equipment. The RP75 connects to the injection pump or air intake shut-off lever via a cable (chain optional). A coil spring, within the RP75, is reset manually and is held in place by an electromagnet. When the Swichgage® detects a malfunction, the electromagnetic circuit is interrupted through a Magnetic Switch, which releases the coil spring that pulls the cable/chain to actuate shutdown. The spring, when fully compressed, exerts a pull of 30 lbf (133 N).

The RP75-12 measures 10-1/4" in length and is compatible with all Swichgage® instruments. Some additional specifications:

The AT03069 Murphymatic® Engine Throttle Controller is a completely reliable heavy duty device developed specifically to automatically control engine speed to meet system demand. Low current, high torque, solid state switching and electronic clutch make it ideal for all automatic and semiautomatic engine systems.

Used with the appropriate Murphy Swichgage®, near constant pressure, level, and load can be maintained. Common applications include controlling pressure in City water and irrigation systems; controlling level in water or oil storage tanks, sewer disposal systems and flood control basins; controlling temperature in multi engine cooling systems and air conditioning systems; and controlling engine load depending upon external conditions.

The following accessories are for Engine Control.

If you wish to continue with a credit card purchase, please note the following instructions:

When you are prepared to purchase an item, do not click the "buy" button on this specific page any page that shows multiple items and multiple "buy" buttons, as the item will not be added to your shopping cart from any page at this level. To successfully add an item to your shopping cart, you must drill down to the next level where a single item is shown on a page and click the "buy" button that appears on that page. You will recognize this final level by the larger product image and a more detailed product description.

After clicking the "buy" button on this product page, a new shopping cart page will automatically open and you will see your chosen item in the shopping cart.