UNITED WORKS

TECHNICAL DATA Common Properties of Commercial L.P. Gas (Vapour at 1 atmosphere, 15.5°C) Specifications for the L.P. Gas burners, fittings, accessories and allied equipment are given in the imperial system with their equivalence where possible in the metric system. B.S.P.T.M. - British standard Pipe Taper Male. B.S.P.T.F. - British standard Pipe Taper Female. B.S.P.P.M. - British standard Pipe Parallel Male. B.S.P.P.F. - British standard Pipe Parallel Female. M.E.C.V. - Male European Cylinder valve (Lefthand) F.E.C.V. - Female European Cylinder valve (Lefthand) Abbreviations The following abbreviations are used in this catalogue. Cu. Copper (refer to diagrams below) Commercial Propane Commercial Butane Density lb / ft 3 Kg / m 3 0.115 2.0 0.155 2.6 Specific Volume ft 3 / lb m 3 / kg 8.6 0.5 6.5 0.38 Specific gravity (air = 1) 1.5 2.0 Specific Heat, Btu / lb°F (kcal / kg°C) Cp Cv 0.38 0.34 0.39 0.35 Calorific value, nett Btu / ft 3 kcal / Nm 3 2300 22600 3000 29000 COPPER CONNECTIONS IMPORTANT CONVERSION FACTORS Pressure : 1 lb/in 2 abs. = 27.68 in w.c. = 2.307 ft. w.c. = 0.070306 kg/cm 2 Energy : 1 Btu = 2.93 x 10 -4 kWh = 0.251996 kcal. 1 kcal = 1.1628 X 10 -3 kWh = 3.9683 Btu. Calorific Values of Various Solid and Liquid Fuels. Btu / lb MJ/kg MJ / ltr Wood (dry) 8000-9000 18.6 -20.9 - Lignite 9000-13000 20.9 - 30.2 - Coal 12000-13000 27.9 - 30.2 - Coke 12000-12750 27.9 - 29.7 - Diesel Oil 19600 45.6 39.7 Light Fuel Oil 19900 46.2 39.2 Heavy Fuel Oil 18750 43.6 41.3 Petrol 21300 49.5 34.9 Kerosene 19700 45.8 37.8 Tighten the Nut with a Spanner, Holding Fitting with Second Spanner Push Tube Hard into the Fitting and Tighten the Nut Hand Tight Slide the Nut and Ring on to the Tube Fitting Copper Ring Nut Copper Tube