1948 1949 1950 1951 1952 1953 1954 1955 FOUR DOOR POWER VALVE

Part Number: 25-40

FOUR DOOR POWER VALVE - Part Number 25-40
FOUR DOOR Power Valve The standard by which all other power valves are measured. QFT exclusive in-house design has become the power valve of preference by professional race teams in virtually every circuit where carburetors are used. Not only does the FOUR DOOR power valve have a much greater flow capacity (vital for alcohol applications), but a quicker response rate and tighter limit bands allow engine builders to precisely tune the power enrichment phase of their calibration. Each FOUR DOOR power valve is hand tested and set to the stamped value. The opening and closing specifications are 1/2 inch HG above and below the stamped value. The thicker molded diaphragm adds increased protection agains backfire induced rupture. No one offers a broader selection of opening values than QFT. This power valve design is conered by patent #6520488B1.
Opening Point: 4.0 inch Hg 1948 1949 1950 1951 1952 1953 1954 1955

Purchase