Menu Bookmark us Contact us About us News Newsletter Products Software Training Rental Events Applications Bearing monitoring Compressed air and nitrogen leaks Electrical inspection and HV/LV testing Heat exchangers, boilers and condensers Motor testing Steam trap inspection Temperature monitoring Thickness gauges Vacuum leaks Valve monitoring Application handbooks Case studies Videos FAQ Support		Steam loss tables for Inverted Bucket traps Overview Low pressure systems High pressure systems Contact us Overview Inverted Bucket traps are generally found on higher-pressure steam systems. However, many people like the long-lasting characteristics of this trap, and install them where one might normally find Float and Thermostatic traps. Due to the many different orifice sizes in the many different models of Inverted Bucket traps, the guide below is a really rough estimate of the potential steam loss. For example: An Armstrong model 883, 3/4" bucket rap made for 15 psig steam will utilize a 1/2" orifice for high condensate capacity applications; whereas a model 881, 3/4" bucket trap for 15 psig steam will utilize a 1/4" orifice. The differences in potential steam loss between the two are significant. Therefore, we have tried to be very conservative when assigning the orifice size in the table below. The actual dollar loss may be significantly different, depending upon the specific model of the trap. The orifice sizes in the table below are referenced from the following Armstrong model numbers: 1/2" pipe size = Model 881; 3/4" pipe size = Model 882; 1" pipe size = Model 883. Order Armstrong Bulletin # 301-H which contains a complete guide to the orifice sizes in the different Armstrong bucket traps. Low pressure systems Pressure at trap 2 PSIG 5 PSIG 10 PSIG 15 PSIG 25 PSIG 50 PSIG Pipe size 1/2" *1/4* *1/4* *1/4* *1/4* *1/4* *5/32* Loss per month £15 £21 £27 £32 £43 £27 Pipe size 3/4" *5/16* *5/16* *5/16* *5/16* *5/16* *1/4* Loss per month £23 £33 £42 £51 £43 £40 Pipe size 1" *3/8* *3/8* *3/8* *3/8* *3/8* *5/16* Loss per month £57 £86 £108 £129 £97 £133 * Assigned orifice sizes employed in the traps when under the differential operating pressures as shown. High pressure systems Pressure at trap 75 PSIG 100 PSIG 125 PSIG 150 PSIG 200 PSIG 250 PSIG Pipe size 1/2" *1/8* *1/8* *1/8* *7/64* *7/64* *3/32* Loss per month £25 £31 £38 £35 £45 £48 Pipe size 3/4" *5/16* *5/16* *5/16* *5/16* *5/16* *1/4* Loss per month £38 £49 £59 £45 £58 £56 Pipe size 1" *3/8* *3/8* *3/8* *3/8* *3/8* *5/16* Loss per month £123 £125 £153 £137 £131 £163 * Assigned orifice sizes employed in the traps when under the differential operating pressures as shown. Contact us Should you have any questions, or if you would like to discuss anything that you have seen on this page, then please do not hesitate to get in touch.  Return to: Previous page