IMPCO MODEL J REGULATOR/VAPORIZER. Two vapor outlet pressures are available. The standard JB blue provides -1.5” w.c. (0.37 kPa). The optional JO provides -0.5” w.c. (0.12 kPa). The port size and mounting pad locations are identical to the Cobra regulator and include a primary pressure test port and “left” or “right” fuel outlets.
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