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oad AaU Vlvt> BOILER BLOW-OFF VALVES When you install an EVERLASTING Duplex Blow-Off Unit, you'll find that its many superiorities speak for them* selves. The valve at the left Is the EVER* LASTING design chat has been famous for more chan 40 years . . . the valve with the drop-tight seal that actually improves with use because of its selllapplan action each rime the valve is opened-or dosed. . . . the valve that can't stick or jam because of its non* wedge design ... the valve chat opens in leas than a quarter turn to provide unimpeded straight-through blow. - The valve at the right is the equally famous EVERLASTING Annie or "x ' Valve, specially designed and equipped to withstand repeated blow-off shocks, erosion and corrosion, and without pockets that might trap and bold solids. Each of these valves . . . and all the other EVERLASTING Boiler BlowOff valve types, fully meet ASMS code requirements . . . assurance that they are properly deslgoed and amply strong for the service. Write for descriptive bulletin EVERLASTING VALVE CO. 49 Hk Street, Jersey CHy, S, N. J. jfor everlasting protection For mm data m Itota than, on pest mb p ter. (tfcartty pair motif wtt6 (tea inft*/ leatBearing Alloy 'i 12S6 * Designed especially as s bearing overlay, Frlx Is reportedly the first aflay. to supptsnt wear properties o( pboehrentt^ sod bcsrlag brense*. Structure ol dopsdt-' .10 Prover 62SERVES DIFFERENT COMPANIES IN IRE GREAT CHICAGO INDUSTRIAL AREAI obtained with new rod liter short best: (restmeet shows wear resistance scroti; tiroes greater than that o( conveottoiul gtTfce Cities Service Heat Prover is graphically proving its worth to all kinds brotue welding rods or electrodes. Nr* Bof industry in the Chicago area and elsewhere throughout the country. material permits use of a film-like deposit that eao be heated to eeeore maxitmun p-: fonuance characteristics and that result*. In a completely integrated bearing. JC.' 62 different companies, producing everything from steel to beef, have Rfound the Heat Prover an important aid to increased production and big ^dollar economy. Emeetle Welding Alloys Cory* KwhcREVER a FURNACE OPERATION IS INVOLVED, Heal Prover can help 4040 172d St, Flushing, N. Y. Recreate productivity by providing: Thread Restoring Tool 1262 Now patented thread re*tod*l; tool, Nu'Tris, reforms damaged esterssl' threads wlthoot rodaolng root and . diameters. Used like a file, a is* P***0. of tool octou damaged threads refl***^ bam and deformed metal sod thread to original eondltloo. Dofk* available {or either National Coarse National Fine threads in eight Relff & Neetor Co, Lykens, Pa . Ropld, continuous sampling. Simultaneous reodlng el oxygen ond combustibles. Direct measurement of orygen and combustibles. Easy portability. No maintenance; no re-calibration. NkUUMBIRi Heat Prover is not an initrumcnt you buy but a service we supply. ,^Contact the Ciliea Service office in your area and team how Heal Prover can ft'serv you... or write crnES gaavicB on. comtany Dept L16, Sixty Woll Tower, B.Ntw Yiork C"ity 5`. QQALITT PEItOLEOH fBODOCTS *#,rowre DtctMia (JOWER DECEMBER. 1933 A