This invention is a steam trap having a thermostatic type of bellows with two or more discharge valves operated by a single bellows. The trap may also have a flexible valve operating bridge. GLOBE VALVE A thermostatic steam trap comprising a housing having a chamber therein, a partition dividing said chamber into two compartments, one of said compartments being provided with an inlet and the other compartment being provided with an outlet, said partition being provided with a plurality of orifices,Forged Steel Valves a valve for each orifice a single thermostatic bellows mounted in said chamber said orifices lying in a common plane and spaced transversely from the longitudinal axis of said thermostatic bellows,Butterfly Valves (flexible) means extending transversely from said thermostatic bellows connecting said valves therewith so that relatively small movement of said thermostatic bellows will open said valves sufficiently to result in full flow through said orifices. This invention relates to steam traps such as are used with steam piping systems and steam-using equipment for automatically disposing of the water which forms when steam condenses, and any air and other gases present. For effecting this disposal all types of steam traps must have a higher pressure on the upstream or inlet side than the pressure on the downstream or discharge side, and provision must be made for keeping this difference of pressure separated except when the trap is discharging. The invention concerns traps of the thermostatic bellows type, and differs from previously known traps of this type by utilizing two or more discharge valves and discharge orifices. The opening and closing of the orifices can be accomplished by a single bellows. A flexible valve operating bridge also can be provided. This unique construction, together with other features hereinafter disclosed, permits the same trap to be used for very high as well as low steam pressure applications. Thermostatic traps of the particular classification pertinent to this invention utilize expansible and contractable temperature-sensitive devices known as bellows, which expand and close the traps' discharge valves when exposed to steam temperature, but contract and open these valves in response to some desired temperature drop of the condensate and gases below the temperature of the steam. Bellows suitable for this purpose include the convoluted tubular and multiple-diaphragm products of several manufacturers which are presently available. All well-designed traps of this thermostatic bellows type have certain important advantages over traps of other basic types. These advantages include: very large condensate discharge capacity at all pressures; the ability to dispose of large volumes of air and the other gases encountered, at all pressures and without requiring auxiliary devices; no change of valves and orifices or other trap parts, and no adjustment required for different steam pressures. Also, some designs are freezeproof when properly installed.

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