MV-3910

MV-3900

MV-3920

MV-3930

CORE REMOVAL TOOLSMV-3900 1/4” FFL x 1/4” MFL rear with shut off valveMV-3910 1/4” FFL x 1/4” MFL rear with shut off valve and 1/4” MFL side port (+ core)MV-3936 3/16” FFL x 3/16” MFL rear with shut off valve

(AUTOMOTIVE)

MV-3920 1/4” FFL x 1/4” MFL rear with ball valveMV-3930 1/4” FFL x 1/4” MFL rear with ball valve and 1/4” MFL side port (+ core)

SPECIFICATIONS• Thesecoreremovaltoolsareusedtoremoveavalvecorefroma

maleflareaccessfitting,withoutlossofrefrigerant.• With the valve core out, many operations can be performed,

including: Replacingabadcore. Addingorremovingrefrigerantmoreefficiently. Measuringsystempressurebyattachingagauge.

• MV-3920andMV-3930havebeenimprovedwithaneasyfinger1/4 turnballvalvedesign.

• These patented core removal tools are strictly manufactured inaccordancewiththeARInormsandUSstandards.

OPERATING INSTRUCTIONS1. Attach the tool with the front coupler to a 1/4” male flare fitting,

thumbtight.2.With the shut-off valve (or ball valve) completely open, push

extractorrodinandsecurethevalvecore.3.Turnextractorrodcounterclockwisetounscrewthecore. Caution:graspextractorrodtightlywhenunscrewingvalvecore

whenhighersystempressureisexpected.4. Slowly allow extractor rod to extend back as far as possible to

allow the shut-off valve (or ball valve) to be closed. (Systempressurewillhelp.)

5.Closeshut-offvalve(orballvalve)completelybyturningtheknobclockwise.

6.Removerearcoupler,extractorrodandvalvecore.Withthevalvecore removed, system can be accessed through the 1/4’’ maleflarerearfittingofthetool(orthesideportifavailable).

7.Toreplaceavalvecore,putnewvalvecoreonextractorrodendandattachextractorrodcouplertorearfittingonthetool,thumbtight.

8. Openshut-offvalve(orballvalve)completelybyturningtheknobcounterclockwise.

9. Pushextractor rod inandsecurevalvecore in fittingby turningclockwise.

Note: when side port is not used, make sure the cap is alwaysinstalled.

MV-5577

MV-3090

MV-3915

MV-3916

ACCESSORIES AND SPARE PARTS FOR CORE REMOVAL TOOLS

SeeMV-39...

MV-5555 Kit-gasketsforMV-3900andMV-3910

MV-5560 Kit-sidevalveforMV-3900andMV-3910

MV-5577 Kit-valvecoregrappler&extractorforMV-3900andMV-3910.Removeacorewithoutlossofrefrigerant.

MV-3090 Punches a hole in copper tubing through a“V-SERIES” fitting for the installation of a corewithoutlossofgas.

MV-3915 PICK TOOLtoextractabrokencorefroma housingwithoutlossofrefrigerant.

Haslefthandthread...

MV-3916 THREAD CHASER TOOLtocleanandre-aligntheinternalthreadsofanyaccessfitting.

MV-3917 SPARE KITcontainingMV-3915&MV-3916

“0” RING Seediverse“0” RING replacements.