【Great Compatibility】 385318032 Vacuum Tank Switch Kit is compatible with Sealand / Dometic 729100 Vacuum Pump Kit. Compatible With Vacuum Tank Models 317729100, 317729200, 317729400, 317324002, 385311660. Also suitable for the S pump and separate accumulator tank. Large O-ring that seals the switch flange to the tank is included.

【Perfect Design】 The resistance of coil is set to 8 to 10 inches. When the vacuum is being pulled into this chamber that diaphragm is pulled inward, pulling this way from trigger so that will turn the pump off. If the system is building enough vacuum but your switch is not responding to turn the pump off, maybe it's time to upgrade your Vacuum Tank Switch.

【Built to Last】 385318032 Accumulator Tank Vacuum Switch Expertly made from premium materials. Professionally designed and tested to meet or exceed OEM standard of Part # 385318032. Perfect replacement for accumulator-style (threaded) tanks.

【Easy & Fast Installation】 It takes a breeze to replace. Kit contains a vacuum switch and o-ring. Simply disconnect the wires, screw the replacement kit into the end of the tank with a 3” male pipe thread. Do everything in reverse and you’re ready to go!

【100% Satisfaction Guarantee】 Your satisfaction is our priority. We strive to give our customers excellent service. All Sixcow products support 30-Day money-back guarantee, 12-Month warranty for quality-related issues. Simply return it for your warranty.