Accessories■ELW■EUW■SLW ■SUW■SLW■SUWilBCDEH——————————lOsi PressureGaugesPressureSwitchesitchesBranchesCoupersHosesJontsSwModel code structureSUW-1/2■DimensionsWelded JointsWelded joint Welded equal unionELW-1/2ELW-3/470 MPaFEP-1FEP-1/2FEP-3/42227.234505558546580354150111418808590P24P30(1) After cutting the pipe, chamfer and clean the cut surface. (2) Remove the attached O-ring and the back-up ring and store them. (3) Perform tack welding to determine the welding position. (4) Perform arc welding. Using a JISD5016 or D5826 welding rod improves work efficiency. Preheat the surface at 100 to 200 °C before welding. Perform two or three layer fillet welding fully to the corner of the joint, avoiding the catching of slag and undercutting, and maintaining a concave welded shape to disperse stress concentrations.(5) Clean the joint after welding, and after the joint has been cooled to room temperature, attach the O-ring and backup ring correctly. (6) Connect the joint. (7) After all piping work is complete, flush the pipe and conduct a pressure test. Apply low and high pressures in several stages to check oil leakage. After applying the maximum pressure a few times, tighten the cap nut additionally. (8) After starting operation, check oil leakage and the looseness of the cap nut on a regular basis. If any trouble is found, take appropriate measures immediately.1/2:FEP-1/23/4:FEP-3/41:FEP-1JointsModelSUW-1/2SUW-3/4SUW-1Maximum operating pressureCompatible pipeFEP-1/2FEP-3/4ϕ P22AThread sizeR1/2Width across flats54Width across flats35ϕ F11GOverall length105Width across flats30O-ringP20*Joints for pipes with a nominal pipe diameter of 1-1/4 are also available. Contact us for details.■How to use a welded joint SUW:Welded stud unionSLW:Welded stud elbowEUW:Welded equal unionELW:Welded equal elbowWelded stud unionSLW-1/2SLW-3/470 MPaFEP-1FEP-1/2FEP-3/427.23422R3/4R1R1/2658054154150141811110120125354630P24P30P20Compatible pipe sizeWelded equal elbowELW-170 MPaFEP-12227.234657085546580151717111418100112128P20P24P30Welded stud elbowSLW-1EUW-1/2EUW-3/4EUW-170 MPaFEP-1FEP-1/2FEP-3/427.234R3/4R16580171714181371583546P24P30P20● An improper work procedure may cause a serious accident. ■EUW■ELWNo.79E since2025182
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