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Mary Balg

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Sticking anti siphon valve in gas line pick up tube ? What problems would that create, how is it suppose to work and can the valve be removed?
 
I have an old gas tank and line that does the same thing.
If it's been kicking around for any length of time, the valve is probably all gummed up from old gas when it turns to varnish.
I'm thinking that you'll have to disassemble the gas line valve, but we'll have to wait until someone more knowledgeable chimes in.
 
Mary Balg said:
Sticking anti siphon valve in gas line pick up tube ? What problems would that create, how is it suppose to work and can the valve be removed?
Click to expand...
A sticking anti-siphon valve can result in anywhere from low to no fuel pump pressure, and can lead to serious engine damage created as a result of lean fuel/air mixtures. Its purpose is to prevent the siphoning of fuel from the tank should a fuel line develop a leak at a point below the fuel level in the tank. Normally the valve is nothing more than a spring loaded check valve which must hold a column of 20 inches of water and open at 25 inches of water. The valve can be removed provided under 33 C.F.R Part 183 found here: (http://law.justia.com/cfr/title33/33-2.0.1.8.44.html#33:2.0.1.8.44.10) scroll down to 183.568, but state regulations should also be checked.
 
The " Hypothetical " improvements on a above deck 6 gallon fuel tank are totally stupid. Fuel cell foam crammed into the tank so tightly that the fuel gauge does not work accurately.

a special threaded port with a heat sensitive fire melting bass & solder plug

a very IFFY check valve that can leave you try to remove it in rough water storms



I first removed the ENTIRE outlet pipe fitting. Then removed all that crammed in plastic foam. Would it eventually breakup & jam everything ?

Replaced the solder plug with a solid brass pipe plug.

Replaced the check valve & 2 pieces of hose with 1 piece of hose.
 
My 6 gallon METAL fuel tanks has ...4....shutoff valves. 2 more than required by the code. 1 on the tank, 1 on the engine & 2 on the hose.
 
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