Document e5B5mEE7pax22dqbmE9JwOVpM

Jas. P. Marsh & Company Specialties, Heating MARSH AIR VENTS Marval Syphon Auto matic Air Valve No. 3 Air Line Valve This is a popular priced dependable, all-metal, factory adjusted valve. Will vent air rapidly, closes for steam and shuts off to water. Furnished in Y in. angle and straight shank in Y, YL and Y in. No. 1 Syphon Air Valve Operates automatically with or without mechani cal suction. Passes all air, closes in stantly to steam. No pockets for water forma tion. Y in. to radiator and Y in. union connection to return air line. Also Y in. x Y in. and Y x Y in. This valve assures positive and noiseless venting. The thermostatic action dis tinguishes instantly between steam and heated air. It closes immediately to steam and water. It is especially adapted to cast-iron radiation and is suitable for cop per radiation. Fur nished in angle and straight shank types, Y in. and also straight shank in Y and % in. Travail Syphon Air Valve No. 5 Rapid Vent For installation at ends of steam mains, return mains, tops of risers where large volumes of.air require rapid venting without escape of steam or water. Also operates to close on vacuum and to prevent re-entry of air. On vapor systems this vent is placed at ends of steam mains. Operates up to 10 lbs. pressure. Y and Y in. connections. No. 6 Quick Vent The Travail is a factory ad justed syphon valve designed for apartment and residential buildings with gravity sys tems. A low priced valve guaranteed to' function satis factorily. Supplied in Y in. angle type and Y and Y in. straight shank. Marsh System Unit Air Made without float, does not close against water. Cannot blow shut on air pack. Vents at the slightest pressure. Has large air port. Factory tested for 10 lbs. pressure. Ship ped without vacuum top unless otherwise speci fied. Y or Y in. male bottom connection. and Vacuum Valve The Marsh Air and Vacu um Valve functions to rapidly eliminate air from one-pipe systems and seal against further intrusion of air when pressure drops. It also keeps the system under vacuum during heating-up periods. This permits steam to circulate under low pressures or vacuum, the radi ators retaining heat for a much longer period. It combines thermostatic, flotation and vacu um operation in one operative part. It is fully guaranteed. Made in Y in. angle pattern, Y> Y and Y In. straight pattern. No. 7 Air Eliminator Designed, for return main use. Vents.all the air at any temperature. Has vacuum top. As sures free and unlimited vent of all air, hot.or cold. Cannot water-log does not spit or leak water. Closes instantly to steam or vapor. Adjusted and tested at factory to work automatically from be low atmosphere to 10 lbs. steam pressure. Made in Y or 1 in. connection. 816 Jas, P- Marsh & Company Specialties, Heating MARSH MEDIUM PRESSURE STEAM TRAPS No. 500 Steam Trap, Inverted Bucket Type Ideal for use on equipment handling large volume of condensate up to 125 lbs. pressure. Self-Venting, combined with large water capacity gives unusually high efficiency. Simple in construction and operation. Capacities in Pounds per Hour at Various Pressure Differentials Size Inlet and Outlet 5 lb. 10 lb. V* in. 1 in. 800 1125 2800 . 4200 6000 11000 25 lb. 1000 4000 8700 50 lb. 670 3000 6200 75 lb. 530 2500 5700 100 lb. 425 2000 4000 125 lb. 400 1450 3800 To convert above capacities to square feet of equivalent direct radiation each trap will handle per hour, multiply capacities given in table by three. To convert these capacities to lineal feet of 1 in. pipe multiply by nine. Thermostatic Steam Traps Nos. 501 and 502 Used to dis charge air and conden sate from heating coils and ap paratus work ing at pressure from 15 to 100 lbs. Body of heavy cast-brass with union nut and tail piece. Nos. 501 and 502 standard in angle pattern only. Other patterns on order. Nos. 501 and 502 Thermostatic Steam Traps No. Size. In. Capacities, pounds condensation per hour at given pressure differential 35 lb. 50 Id. 801b. 100 lb. SOI 90 110 115 130 502 '4 502 V* 140 300 160 450 200 490 260 580 502 1 700 925 1100 1260 No. 512 Steam Trap Similar in design to No. 12 trap pre viously described but constructed for working pressures from 30 to 100 lbs. Specify highest working pressure. No. 512 Float and Thermostatic Medium Pressure Trap--^-in. Inlet and Outlet Pressure differential 30 lb- 501b- 75 lb. 100 lb. Capacities -- pounds Con densation per hour......... 600 425 360 400 No. 514 Steam Trap No. 508 Steam Trap Similar in de sign to No. 8 trap previously de scribed but con structed for work ing pressures from 25 to 60 lbs. Specify highest working pressure. No. 508 Float and Thermostatic Medium Pressure Trap--1^-in. Inlet and Outlet Pressure differential 401b. 601b. Capacities--pounds condensation per hour. 690 827 No. 514 Steam Trap Size Inlet and Outlet Wa in. 2 in. Size Inlet and Outlet V/a in. 2 in. 301b. 4750 7600 11450 13500 1001b. . 2460 5275 7490 9230 817 8Q.ib. 3860 6800 9700 12240 . 1251b. 1380 3260 5400 8140