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  1. #1
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    Fuel demand valve and 2 gas tanks

    I planing to install fuel demand valve on my Ranger z21 2005 With Mercury Verado 250hp. My question is do I need 2 demand valves because I have 2 gas tanks or just 1 on main line after switch valve? And do I need siphon valve if I install fuel demand valve? Thank you in advance. Update Serial Number 1B073852 Mercury Verado 250hp 2005
    Last edited by pedja31; 05-21-2024 at 11:11 AM.

  2. Member
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    #2
    you'll probably need to give a description of your fuel system.
    2005 boat probably have vented fuel tanks so you would not need any demand valve.
    outboards do not need antisiphon valve.

  3. Member
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    #3
    Quote Originally Posted by massbays View Post
    you'll probably need to give a description of your fuel system.
    2005 boat probably have vented fuel tanks so you would not need any demand valve.
    outboards do not need antisiphon valve.
    Thank you very much, I see lots of new Ranges have demand valve. My is very old 2005 I thinking to make some upgrades.

  4. Mercury 3L/4 Stroke/Verado Moderator EuropeanAM's Avatar
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    #4
    As suggested in Post# 2, unless you've REPLACED the fuel tanks in your boat, it would have a vented system and should not require fuel demand valves.


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  5. Member
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    #5
    Quote Originally Posted by EuropeanAM View Post
    As suggested in Post# 2, unless you've REPLACED the fuel tanks in your boat, it would have a vented system and should not require fuel demand valves.
    Thank you very much