RV WATER HEATER BYPASS PEX VALVE the screw on ports are 8.5" apart on centers PEX SDR 9 B137 1pc I USUALLY HAVE MORE STOCK OF ALL MY ITEMS AND CAN SAVE YOU MONEY IF YOU ARE INTERESTED IN LARGER QUANTITY PURCHASES Other countries must contact me for a postage quote. Please look at my other items in my STORE and add me to your favorites list. Click on See all Categories for additional products. PLEASE SEND ONAN PART NUMBERS OR MODEL AND SPEC. NUMBERS WHEN INQUIRING ABOUT OTHER PARTS. .... Cheers, Mike Powered by Turbo Lister The free listing tool. List your items fast and easy and manage your active items. IF YOU NEED TO CONTACT THE SELLER BY PHONE, PLEASE FOLLOW THESE INSTRUCTIONS: *FROM A DESKTOP COMPUTER, GO TO THE ITEM THAT YOU HAVE QUESTIONS ABOUT. *CLICK "CONTACT SELLER" LOCATED ON THE RIGHT SIDE OF THE PAGE, UNDER SELLER INFORMATION. *SELECT THE "OTHERS" OPTION. *CLICK "VIEW PHONE NUMBER".