Check the listing for details. 385318032 Vacuum Tank Switch w O-ring Kit For Sealand Dometic 729100 Vacuum Pump. Condition: New. Listed at 179.49 USD. 385318032 Vacuum Tank Switch w O-ring Kit For Sealand Dometic 729100 Vacuum PumpGreat 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!Package included 1 * 385318032 Vacuum Tank Switch Kit.PaymentShippingReturnsContact usPayment1. All major credit cards are accepted through our secure payment processor Payoneer.2. Please make sure your Shipping address is correct before you pay, cause it cannot be changed once the order shipped out.ShippingPlease read the shipment and payment detail carefully before you bid.Returns1. Return to us within 60 days from the delivery date for exchange or refund. Refund will be given as Money back or item exchange (buyer's choice).2. Return shipping fee is the responsibility of buyer unless the return is a result of our mistake.3. If you need return, please contact our customer service representative, let us know the detailed problem and send us some pictures for confirmation.Contact usWe apologize for the late reply during the holidays.Please contact us via ebay using"Contact member".We will respond within 1 business day or less. Please include your ebay item number or order number in all communications.