When properly installed the switch is controlled by air pressure in the tube created by the rising bilge level

Makes installation easy and eliminates accidental destruction of linkage

) 6 5/16 Overall depth (In

IPS Flange Diameter  Thread Length 2" 3-1/2"  2-1/2"

midrange and treble

Reverso - Portable Oil Change System For Boaters, Part No. OP-7-12 - Description 12V Pump Only Hand Held Remote When properly installed the switchThe OP 7 P is a portable fast lube oil change system (FLOCS) mounted to an easy carry base. The pump is ideal for completing oil changes on generators and boat engines. Flow direction is reversible with the integrated switch. The OP 7 P is the latest version. It replaces the OP 700. Technical Specifications: Flow Rate: 7. 4 GPM 28 LPM Voltage: 12V Amperage Draw: 8A Fuse: 10A Maximum Work Pressure: 15 psi 1 bar Pump Rated IP67 1 2" I. D. hose (3 ft