BACKGROUND OF INVENTION
In the HVAC field it has become very important, when servicing pressurized refrigeration systems, to remove and replace leaking valve core elements. The EPA has a great concern on the handling and release of refrigerant gases. There is a tool on the market used in the HVAC field that will safely remove and replace valve core elements, such as the Schrader-type from pressurized air conditioning systems. This tool is called a valve core removal tool, comprising a shut off valve assembly, but there is issues with this tool being obstructed, and is unable to couple onto many air conditioning systems valve access points.
There seemed to be a need for a solution, so the valve core extensions were created in several variations to assist and provide the existing valve core remover tool better accessibility from obstructions.
SUMMARY OF THE INVENTION
The present invention is a set of extended adapters that is capable of being used with a tool for pressurized refrigeration systems. The adapter set comprises: a 4⅛″L adapter, a 6⅞″L adapter, a 20 degree offset adapter, a 90 degree adapter and an extended rod assembly, and are able to couple to the tool used for pressurized refrigeration systems shut-off valve assembly, allowing the same passageways needed to engage and remove the valve core elements.
FIELD OF THE INVENTION
This invention is capable of being used with a tool for removing valve elements from pressurized air conditioning systems.
BRIEF DESCRIPTION OF THE DRAWINGS
FIGS. 1 and 1
a show the various components of the extended rod assembly 500.
FIG. 2 illustrates preparing of the universal line service valve.
FIG. 3 illustrates preparing of the compression nut.
FIG. 4 shows preparation and assembly of the 4⅛″L straight extension adapter 600.
FIG. 5 shows preparation and assembly of the 6⅞″L straight extension adapter 700.
FIG. 6 shows preparation and assembly of the 2½″L offset extension adapter 800.
FIG. 7 shows preparation and assembly of the ninety degree extension adapter 900.
FIG. 8 shows extended rod assembly and extension adapters assembled to the shut-off valve assembly.
DETAILED DESCRIPTION OF DRAWINGS (FIGS. 1-8)
FIG. 1a depicts the materials for the extended rod assembly.
FIG. 1 prep & assemble; extended rod assembly 500, apply JB weld epoxy to one end of steel cable 3a, and insert extractor head 1a, to steel cable 3a, apply JB weld to small nail 2a, insert through small hole of extractor head 1a, and allow epoxy to setup. Apply JB weld ¾″ to opposite end of steel cable 3a, insert steel cable 3a, in to ¾″×⅛″ deep hole of rod 4a, apply JB weld to small nail head 5a, and imbed on to small hole, side of rod 4a, and allow epoxy to setup.
Note: The bonding agent may vary from JB weld to soldering or brazing, etc.
Opposite side of rod 4a, insert compression nut 6a, sliding threaded end through first. Imbed rod control knob 7a, to rod 4a, insert ⅛″ set pin 8a, through hole of rod control knob 7a, and rod 4a.
FIG. 2 debraze and separate service valve 101 from copper tube discarding copper tube. Bore through service valve 101 with ¼″ drill bit. Four service valves needed for this kit.
FIG. 3 compression nut 102 is removed from a hvac refrigerant hose. Bore through compression nut 102 with 5/16″ drill bit carefully not damaging inner threads. Four compression nuts are needed for this kit.
FIG. 4 prep & assemble; 4⅛″L straight extension adapter 600. 5/16″D×3⅛″L copper tube 103, swedge one end of copper tube 103 to ⅜″, and insert compression nut 102 sliding threaded end through first. Swedge opposite end of copper tube 103 to ⅜″ insert and braze service valve 101 to this end of copper tube 103.
FIG. 5 prep & assemble; 6⅞″L straight extension adapter 700. 5/16″D×6⅛″L copper tube 104; swedge one end of copper tube 104 to ⅜″, and insert compression nut 102 sliding threaded end through first. Swedge opposite end sliding threaded end through first. Swedge opposite end of copper tube 104 to ⅜″ insert and braze service valve of copper tube 104 to ⅜″ insert and braze service valve 101 to this end of copper tube 104.
FIG. 6 prep & assemble; 2½″L offset extension adapter 800. 5/16″D×2½″L copper tube 105, bend copper tube 105 twenty degrees and swedge one end to ⅜″, and insert compression nut 102 sliding threaded end through first. Swedge opposite end of copper tube 105 to ⅜″ insert and braze service valve 101 to this end of copper tube 105.
FIG. 7 prep & assemble; ninety degree extension adapter 900. 5/16″D×6⅛″L copper tube 106; bend copper tube 106 ninety degrees and swedge one end to ⅜″, and insert compression nut 102 sliding threaded end through first. Swedge opposite end of copper tube 106 to ⅜″ insert and braze service valve 101 to this end of copper tube 106.
FIG. 8 Extended rod assembly 500, straight extension adapter 600, and 2½″L offset extension adapter 800 assembled to the shut-off valve assembly of said tool for pressurized refrigeration systems.