Low Pressure Shrader adapter
#1
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I would like to monitor the fuel pressure at the low side of the fuel pump cell. It has a standard sized schrader valve (like on all car/truck tires these days). The fuel pressure sensor has a 4an male end. Searched online for an adapter for it. Maybe I'm not using the correct search terms. Can you guys help? I'll put a hose between the two....linked below. The hose will be 4an female. So need the adapter or adapters (maybe) to go into the 4an female hose end, and screw onto the Schrader valve.
8.1 Volvo penta




8.1 Volvo penta




#2
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From: On A Dirt Floor
Is the end in the fuel rail pipe thread ? Like 1/8” maybe ? If so, i’d remove the valve and that’s where i’d do a fitting. Ie: in the fuel rail.Not the schrader valve itself.
Last edited by SB; 12-29-2025 at 06:25 PM.
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#4
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From: KY
#5
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Your looking for a Schrader to 4 AN adapter
4AN adapter
4AN adapter
#6
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From: SW Ohio
I believe what SB is suggesting is to do is remove the Schrader valve and install a 4AN adapter into the port, instead of connecting to the Schrader valve. And I would wholly agree. That shouldn't be too hard to find. Just gotta figure out what thread it is. My guess is it's either a 1/8 or (probably) 1/8 NPT.
Thanks. Brad.
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From: On A Dirt Floor
#10
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From: SW Ohio
lmannyr,
I believe what SB is suggesting is to do is remove the Schrader valve and install a 4AN adapter into the port, instead of connecting to the Schrader valve. And I would wholly agree. That shouldn't be too hard to find. Just gotta figure out what thread it is. My guess is it's either a 1/8 or (probably) 1/8 NPT.
Thanks. Brad.
I believe what SB is suggesting is to do is remove the Schrader valve and install a 4AN adapter into the port, instead of connecting to the Schrader valve. And I would wholly agree. That shouldn't be too hard to find. Just gotta figure out what thread it is. My guess is it's either a 1/8 or (probably) 1/8 NPT.
Thanks. Brad.
Sorry…. Meant to say 1/8 or 1/16. Looks like it’s 1/16NPT.
Thanks. Brad.




