REGULATORS & TANK VALVES TANK EVACUATION FITTINGS TANK EVACUATION FITTINGS 7572FC and 7580FC Chek-Loks® are obsolete and no longer available. They are often referred to as the " Old Style RegO Chek-Loks®. " There are many of these Chek-Loks® still in service. They are liquid withdrawal valves to be used for tank evacuations, but are not to be used for permanent service. Use the proper RegO adapter when using 7572FC and 7580FC Chek-Loks® for tank evacuations. 7590U and 7591U Chek-Loks® are liquid withdrawal valves. They are often referred to as the " New Style Chek-Lok®. " They can be used for permanent service (such as service to vaporizers or grain dryers) as well as for tank evacuations. Use the proper RegO adapter when using 7590U and 7591U Chek-Loks®. CHEK-LOK® 7590U & 7591U EXCESS FLOW VALVES * Extra strength connection between body and adapter provides increased strength. * Weep hole in cap provides indicator to verify Chek-Lok® is closed before cap removal. (Tell Tale) * Heavy duty brass cap requires at least 3-1/2 full turns for removal. * O-ring seal on adapter provides a gas tight seal before the adapter opens the equalizing stem. * Eliminates need for individual transfer valves at each container. * UL listed. Chek-Lok® Excess Flow Valves are designed to provide a convenient means of withdrawing liquid from stationary containers prior to moving the container. The Chek-Lok® permits one transfer shut-off valve with an adapter to be used interchangeably on a number of tanks. The 7590U and 7591U Chek-Loks® are also designed for use on permanent installations provided the excess flow valve is sized properly for the system and piping. NOTE: In some cases, it may be necessary to use an in-line excess flow valve to protect the downstream piping. This valve is not recommended for use as a liquid source for pumps. CAT. NO. MFG. NO. INLET CONNECTIONS 1LP1926 7590U 1LP1934 7591U 3/4 " M. NPT 1-1/4 " M. NPT OUTLET CONNECTION 1-5/8 " UNF 1-5/8 " UNF BODY WRENCH HEX FLATS 1-5/8 " 1-3/4 " APPROXIMATE EFFECTIVE LENGTH 1-7/16 " 1-11/16 " CAP WRENCH HEX FLATS 1-5/16 " 1-5/16 " APPROXIMATE CLOSING FLOW,LIQUID GPM(PROPANE)* 20 35 * Based on horizontal installation of excess flow valve. Flows are slightly more when valves are installed with outlet up, and slightly less when installed with outlet down. NOTE: Multiply flow rate by .94 to determine liquid butane flow. CHEK-LOK® UNION STYLE ADAPTERS FOR 759OU & 7591U The 7590U-10 adapter must be used to connect to the 7590U and 7591U Chek-Lok. This insures a proper connection to open the check mechanism. A built in nylon gasket provides a gas tight seal. CAT. NO. MFG. NO. INLET CONNECTIONS OUTLET CONNECTION WRENCH HEX FLATS 1LP1928 7590U-10 1-5/8 " UNF 3/4 " F.NPT Visit us at :: www.dealerslp.com 70 DON'T SEE WHAT YOU'RE LOOKING FOR? JUST ASK! WARNING: Cancer and reproductive harm - www.P65Warnings.ca.gov 1-3/4 "http://www.dealerslp.com http://www.P65Warnings.ca.gov