These new Fuel Pressure Regulators are machined from aircraft quality aluminium for those who demand the best. Manufactured by Essex Industries, these regulators have a diaphragm made of fluoro silicone for extended life and high temperature protection. They are compatible with all grades of petrol/methanol and have 1/8" NPT gauge ports. Mounting bracket, fittings and hardware are included. # ED1728 is adjustable from 35 to 90 psi and has two -6 AN inlet ports plus a single -6 AN outlet. # ED1729 offers the same flow performance but with a longer body and -10 AN inlet ports. Both are capable of handling the flow from pump # ED1794 or two # ED1790 pumps for systems well beyond 1000 hp.