L17-13 REVISED JULY, 2015 © Copyright 2023. All rights reserved. No portion may be copied or reproduced in any manner. AIR CONDITIONING ORIFICE TUBES SOSMETAL PRODUCTS INC. UNDER THE HOOD SERVICE L10 L11 L12 L13 L14 L15 L16 L17 L18 L19 L20 L21 For R-12 & R134a A/C Systems Now your customer can have: l 5° - 10°F colder air (at hot idle) l Much improved performance when converting from R12 to R-134a l Reduced compressor load, improved city fuel economy & emissions l Extended compressor life TECH TALK – how it works The Smart VOV (variable orifice valve) uses system pressure and refrigerant flow to move a metering piston relative to a fixed opening in the sleeve. The piston movement is resisted by an attached spring. When idling at high ambient temperatures, the piston shifts to a smaller metering area similar to a TXV. This compensates for the reduced compressor output and increases the cooling performance. The Smart VOV also has a unique re-open feature which reduces compressor pressure for severe idle conditions. At highway speeds, the Smart VOV operates on a large orifice. The net result is better performance than a TXV without the complexity or reliability concerns. Unlike a TXV, which has constantly moving parts and small internal clearances, the Smart VOV is stationary during most operating conditions and has large internal clearances. It’s low friction floating design insures smooth operation and extremely long life. SMART VOV Features: Increased A/C Cooling l Up to 10°F colder air at idle l Cooler interior in city traffic l For R-12 and R134a systems High Quality l Precision metering system l Engineered for long life l OEM proven materials Improved Operation l Pressure regulation l Quick response l Sensitive to flow and quality Many Applications l OEM CCOT systems l Alternative to TXV l R12 to R134a conversions l The Smart VOV is a new refrigerant expansion device that substantially increases air conditioning cooling at idle and city traffic conditions. l It is a self-contained “drop-in” replacement for fixed orifice tubes; it creates colder discharge air temperatures by automatically reducing the orifice area at low compressor speeds such as when idling or driving in city traffic. l Test vehicles equipped with Smart VOV have demonstrated excellent performance, outstanding reliability, and extended compressor life in over one million miles of severe duty desert testing. Complete coverage with only two numbers Drop-in replacement for ineffective fixed orifice tube (no modifications required) VARIABLE ORIFICE VALVE SMART VOV™ PART NO. ORIFICE TUBE AUTOMAKER’S FOUR SEASONS REPLACE with FOOT MAKE COLOR OEM PART # FOT ORIFICE SMART VOV NOTES Audi White or Gray 302-272-679 38623 1502002 Ford/Lincoln/ Blue or Black E0VY-19D990-A, E1FZ-19D990-A 38621 1502002 1 Mercury F3XY-19D990-A, YG-322 Red E69Z-19D990-A, F4UZ-19D990-A 38635 1502002 1 YG-321 Orange E8TZ-19D990-A, E8UZ-19D990-A 38639 1502002 1 F2DZ-19D990-A, YG-323 Brown or F39Z-19D990-A, FD92-19D990-A 38640 1502002 1 Green E69Z-19D990-A, YG-319, YG-320 Ford Mondeo (U.K) Red -- 38635 1502002 1 General Motors White 3033879, 3033919, 52453930 38623 1502002 15-5151, 15-5611 Yellow/White (Evap. Mounted) 52460909, 15-30791 38642 1502002 GM Opel White (GM) 52400909, 3033879 38623 1502002 Hyundai Orange (Ford) -- 38639 1502002 1 Jaguar White (GM) -- 38623 1502002 Mazda Red (Ford) ZZMO-61-179 38635 1502002 1 Nissan Blue or Black (Ford) 92200-0B00 38621 1502002 1 Rolls Royce White (GM) 3033879 38635 1502002 Volvo White (GM) R12 -- 38623 1502002 Yellow (Volvo) R134a 1324829-9 38642 1502002 Volkswagen Gray or White (GM) -- 38623 1502002 FOOTNOTES: 1. Liquid line may contain non-replaceable original orifice tube – If this is the case, you can use commonly available inline orifice tube housing repair kit which will accept VOV (See Fixed Orifice Tube Replacement Kits, No.s 923335 or 923659 for instructions).
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