A capacity plate. A stroke gauge. A vacuum chamber. Two best quality pressure gauges. A water relief valve of large capacity. A cast iron relief valve discharge cone. A set of brass priming pipes and special priming valves. From two to six hose valves. A sight feed cylinder lubricator connected above throttle. A one-pint hand oil pump connected below throttle. Information regarding tests made under these specifications can be obtained by addressing Underwriters’ Laboratories, Chicago, Ill. INDEX TO PUMP SPECIFICATIONS. Article No. and section. Acceptance, tests for, 48 to 54 Air chamber, 40 Air valve, 45 Automatic sprinklers, discharge of, 3 _c_ Boiler power required for driving pumps, 3 _a_ Bolts, allowable stress and size, 9, 27 _f_ Bolting standards required, 39 _c_ Bushings for packed water pistons, 30 Bushings for plungers, 28, 29 Capacity of pumps, method of computing, 4 Capacity plate, 5 Chambers, air and vacuum, 40 Clearance in steam cylinders, 12 Cone, discharge, 44 Cover plates for water valves, 35 Cranks, 16 Crossheads, 16 _c_ Cushion valves, 19 Cylinders, steam, 8 Cylinders, water, 27 Delivery, test of maximum, 54 Discharge cone, 44 Drain cocks, 24, 47 Duplex pumps required, 2 Fire stream, standard, 3 _c_ Flanges, standards required, 39 _c_ Friction, internal, tests for, 49 Guards for valves, 35 Gauges, pressure, 23, 41 Gauges, stroke, 26 Hose valves, 42 Inspection at shop, 7 Leakage, test of internal, 52 Levers, valve motion, 17 Links, 16 Name plates, 5 Oiling devices, 25 Pipe, sizes, steam and water, 39 Piston areas, ratio, 3 _a_ Pistons, packed water, 30 Piston rods and nuts, 20 Pistons, steam, 13 Plunger bushings, 28, 29 Plunger, water, 28, 29 Pressure, maximum, working tests for, 53 Priming, methods required, 46 Rock shafts, 16 Rods, piston, 20 Rods, valve, 21 Safety valves, 43 Safety valve, test of capacity, 51 Shop inspection, 7 Single pumps not acceptable, 2 Sizes of pumps, standards, 3 _a_ Slip, 4 _f_ Slip, test of internal, 52 Smoothness of action, test for, 48 Speed of pumps, 3 _a_, 33 _b_ Speed of pumps, revolutions per minute, 3 and 4 Springs, valve, 35 Steam cylinders, 8 Steam, clearance space, 12 Steam joints, 8 _c_ Steam pistons, 13 Steam ports, 11 Steam slide valves, 14, 15 Strength of parts, 6 Strength, tests for, 50 Stuffing box, 22 Tests for acceptance, 48 to 54 Tightness, tests for, 50 Vacuum chamber, 40 Valves, water valve areas, 33-34 Valve, air, 45 Valve, cover plates, 35 Valves, delivery, 34 Valve guards, 35 Valves, hose, 42 Valve motion stand, 18 Valves, pump, general requirements, 31 Valves, pump, size and number, 32 Valve rods, 21 Valve rod heads, 16 _c_ Valves, safety, 43