The V3 valve is a duplex valve with return lines allowing unused fuel returns to the tank of origin (many injected and eg. Rotax engines need a return, and the usual system of feeding the left tank is not really ideal). The return is tapped 1/8" NPT for, eg standard AN-4 or other
pipe fitting adaptors. The main valve uses the range of special SPRL pipe
fittings, see the accessories tab for details.
Available as –3P (3 Port) with LEFT-RIGHT-OFF or –4P (4 Port) with LEFT-RIGHT-BOTH-OFF positions.
Note: See "Accessories" tab for fittings. Must purchase Newton fittings. Standard AN Fittings do not fit valves.
The SPRL Valves, as designed, have a very nice 'feel' and are logical in use, however, there is a requirement in FAR 23 whereby the fuel valve must be turned from OFF to an ON selection simply by turning it, i.e. it should not have to be lifted up, pushed down etc, and it should also not be possible to turn it from an ON position to OFF without a dent. See V1/V3/V4 valves with a 'conforming' selector.
Yes, all the fittings listed as accessories will fit both valves.