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STP XXXXX Y - A - B <br />STP = Basic Model Designation <br />XXXXX = Factory Installed Options (Model designations may include <br />one or more of the following characters in alphabetical order.) <br />AG = Alcohol -gasoline compatible (up to E85, up to B20, and 8100) <br />(Note standard models up to 10% ethanol capable) <br />F = Floating suction adapter (1'/2' NPT female adapter) <br />K = Intake filter screen (IFS, factory installed to PMA) <br />M = MagShelFm (flow enhancing, expanded PMA shell) <br />*R = Model R check valve (24 psi relief/22 psi reset for PLLD) <br />*W = Model W check valve (16 psi relief/ 13 psi reset for PPM4000) <br />Y = Pump Motor Horsepower Rating <br />150 = 1'/2 Hp fixed speed <br />A = Model Length (see table) <br />VLI = Variable length range #1. <br />VL2 = Variable length range #2. <br />VL3 = Variable length range #3. <br />(Note VL2 models fit 94% of all known installations) <br />B = Riser Pipe length (see diagram) <br />Riser pipe length is expressed as two numeric characters that <br />indicate the total length of the riser in inches. Riser pipes are <br />available from 7" to 69" in 1" increments (additional charge for risers <br />31" or longer). <br />Notes: <br />If not otherwise specified, all STP models are supplied with standard model <br />check valve (40 psi relief /35 psi reset for MLD, TS-LS300, and TS-LS500). <br />Model length (A) <br />60" - 88" V L 1 <br />2 Hp 91" - 152" VL2 <br />123" - 214" VL3 <br />61"- 89" 1 VL] <br />2 Hp high 92" - 152" VL2 <br />pressure <br />124" - 215" VL3 <br />