Webster

1 R SERIES SERVICE SAVER fuel UNITSA vailable in both single-and two-stage models, Webster s service saver fuel units are ratedto capacities of 80 gph. Featuring theunique Webster rotary filter, simple flangemounting, and an extended shaft length, theRSeries is adaptable to virtually everyreplacement UNIT SPECIFICATIONSRS eries fuel UnitsCapacities to 80 gphSingle- and Two-StageR SERIES fuel UNITS CODE ANALYSISAF1R - Single Stage -1725 RPMB ypass Plug Access21R - Single Stage -3450 RPM* Right hand inlet (from front cover)2R - Two Stage -1725 RPM- Left hand inlet (from front)22R - Two Stage -3450 RPM31R - Single Stage -1425 RPMG41R - Single Stage -2850 RPMD esign Series32R - Two Stage-1425 RPMS haft Seal Type42R - Two Stage -2850 RPMFace LipBNumber of Filter Sections 1 thru 6 CMax Rated Pressure (PSI)

2 At1150 PSI100 PSI2300 PSI100 PSI320 PSI10 PSI445 PSI40 PSI5100 PSI100 PSI6125 PSI100 PSI880 PSI20 PSIDP ressure Gear Size 0 thru 8 ERotation and Porting-As viewed from Shaft EndA Clockwise Nozzle Port LeftB CCW Nozzle Port RightCCCW Nozzle Port LeftDCW Nozzle Port RightM34DK-3 SERIES fuel UNITSSINGLE STAGE UNITSTo meet the needs of today s fuel -efficient, downsized and space effi-cient burners, Webster spopular M34DK-3 incorporates improvedaccess to both the bleed valve and bypass plug. Locating the bleed portplug assembly on the side of the fuel unit provides the service technicianwith one visible and accessible location to either bleed the fuel unit orchange the bypass plug without removing the burner.

3 The M34DK-3retains all of the industry accepted, state-of-the-art features of theM34DJ-3 fuel unit. These include faster fuel cut-off, improved priming onone-pipe installations, and reduced inlet line flow on two-pipe systemswhich results in reduced line noise. Webster s M34DK-3 fuel unit is avail-able in a single stage, 3450 RPM model rated at 3 GPH. Operating pres-sure is factory set at 100 psi and is adjustable to 150 psi. The M34DK-3is capable of maintaining its 3 gallon per hour fire size at up to 150 psithroughout it s service SERIES fuel UNITSSINGLE- AND TWO-STAGEL ight and extremely compact, the Webster MSeries fuel units have earned a reputation forreliability and efficiency.

4 All units include theWebster internal rotary filter. The rotary filterreduces the need for troublesome periodic clean-ing. Because the filter blades rotate at motorspeed with constant cleaning action, clogging is min-imal compared to units that use internal filter screen. For maximum pro-tection, an additional line filter is recommended in accordance with stan-dard practice. Another popular feature is the easy-to-bleed valve assem-bly located on the side. A D drive reduces the harmful effects low-lubric-ity fuels had on previous key-drive designs. Simple flange mounting andside-located nozzle ports make the M Series ideal for fuel unit fuel units are available in single- or two-stage, 1725 and 3450rpm models with capacities to 6 M=Single Stage2M=Two StageB 17=1725 RPM34=3450 RPMC C=CCW rotation, outlet leftD=CW rotation, outlet right (as viewed from shaft end)D A = Key drive, face seal, old style portingB = Std.

5 , face seal, old style portingC = Special,face seal,old style portingD = Std. lip seal, old style portingE = Special, lip seal, old style portingF = Same as D except revised portingG = Same as E except revised portingH = Same as F except o-ring on pressure adjusting screwJ = Same as H except revised internal portingK = Same as J except revised porting and bleed valve locationL = Same as H except revised porting and bleed valve locationE 3= 3gph max. recommended fire size6= 6gph max. recommended fire size15=15gph max. recommended fire sizeF No *=Unit set 1 pipe (Bypass plug not installed)*=Unit set 2 pipe (Bypass plug installed)14 1 stage or 2 stage w/suction gear same size as pressure 2 stage w/suction gear one size larger than pressure Customer ModificationsJNozzle Outlet Type and BypassCondition.

6 Final digit even - Factoryset for 2-pipe operation. Final digit odd- Factory set for one pipe CODE IR I I I D IA3 ABCDEFG HJPressure:Built in pressure set at 100 psi (supply pumps set at 20 psi).Porting:1 /8 NPTF: side location nozzle port if pump code ends in 3 or /4 NPTF: side location nozzle port if pump code ends in 13 or /4 NPTF: 2 inlets, gauge port and top and bottom :Mounting:Double lip bolt : Self cleaning rotary type - internal. NOTE:External filter recommended with each Inlet Vacuum:Single-stage units - 10 Hg Two-stage units - 15 HgMODEL R --- SINGLE STAGESHAFTNOZZLECAT. NO. MFG. (CW) R --- TWO STAGESHAFTNOZZLECAT. NO.

7 MFG. (CW) M --- SINGLE STAGE1725 RPM MODELSSHAFTNOZZLECAT. (CW) RPM MODELSSHAFTNOZZLECAT. (CW) 2M --- TWO STAGE1725 RPM MODELSSHAFTNOZZLECAT. (CW) RPM MODELSSHAFTNOZZLECAT. (CW) FuelPumps&Valves