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Steam Traps
Keep your steam systems running efficiently with our dependable steam traps. Designed to discharge condensate and non-condensable gases without losing live steam, these components help improve energy efficiency, protect equipment, and reduce operating costs. Our selection includes thermodynamic, thermostatic, and mechanical (float and inverted bucket) steam traps, available in a wide range of sizes, materials, and pressure ratings. Ideal for boilers, heat exchangers, process equipment, and distribution lines, steam traps ensure safe, reliable performance across industrial and commercial applications. With rugged construction, efficient operation, and trusted-brand quality, our steam traps deliver long service life, reduced maintenance, and consistent energy savings, making them a smart choice for any steam system.
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1100090 - 1/2" NPT SIB30/6 Inverted Bucket Steam Trap, Stainless Steel, PMO 170 PSIG - Spirax Sarco
$907.09
Should ship between 12 Nov and 26 Nov
Subject to factory lead times
1100095 - 1/2" SW SIB30/6 Inverted Bucket Steam Trap, Stainless Steel, PMO 170 PSIG - Spirax Sarco
$901.23
Should ship between 12 Nov and 26 Nov
Subject to factory lead times
1100190 - 1/2" NPT SIB30/4 Inverted Bucket Steam Trap, Stainless Steel, PMO 435 PSIG - Spirax Sarco
$901.23
Should ship between 12 Nov and 26 Nov
Subject to factory lead times
1100195 - 1/2" SW SIB30/4 Inverted Bucket Steam Trap, Stainless Steel, PMO 435 PSIG - Spirax Sarco
$907.09
Should ship between 12 Nov and 26 Nov
Subject to factory lead times
1100290 - 1/2" NPT SIB30/8 Inverted Bucket Steam Trap, Stainless Steel, PMO 58 PSIG - Spirax Sarco
$907.09
Should ship between 12 Nov and 26 Nov
Subject to factory lead times
1100295 - 1/2" SW SIB30/8 Inverted Bucket Steam Trap, Stainless Steel, PMO 58 PSIG - Spirax Sarco
$901.23
Should ship between 12 Nov and 26 Nov
Subject to factory lead times
1100390 - 1/2" NPT SIB30/5 Inverted Bucket Steam Trap, Stainless Steel, PMO 290 PSIG - Spirax Sarco
$901.23
Should ship between 12 Nov and 26 Nov
Subject to factory lead times
1100395 - 1/2" SW SIB30/5 Inverted Bucket Steam Trap, Stainless Steel, PMO 290 PSIG - Spirax Sarco
$901.23
Should ship between 12 Nov and 26 Nov
Subject to factory lead times
1100490 - 1/2" NPT SIB30/7 Inverted Bucket Steam Trap, Stainless Steel, PMO 123 PSIG - Spirax Sarco
$907.09
Should ship between 12 Nov and 26 Nov
Subject to factory lead times
1100495 - 1/2" SW SIB30/7 Inverted Bucket Steam Trap, Stainless Steel, PMO 123 PSIG - Spirax Sarco
$901.23
Should ship between 12 Nov and 26 Nov
Subject to factory lead times
1101090 - 3/4" NPT SIB30/6 Inverted Bucket Steam Trap, Stainless Steel, PMO 170 PSIG - Spirax Sarco
$901.23
Should ship between 12 Nov and 26 Nov
Subject to factory lead times
1101095 - 3/4" SW SIB30/6 Inverted Bucket Steam Trap, Stainless Steel, PMO 170 PSIG - Spirax Sarco
$901.23
Should ship between 12 Nov and 26 Nov
Subject to factory lead times
1101191 - 3/4" NPT SIB30/4 Inverted Bucket Steam Trap, Stainless Steel, PMO 435 PSIG - Spirax Sarco
$907.09
Should ship between 12 Nov and 26 Nov
Subject to factory lead times
1101195 - 3/4" SW SIB30/4 Inverted Bucket Steam Trap, Stainless Steel, PMO 435 PSIG - Spirax Sarco
$907.09
Should ship between 12 Nov and 26 Nov
Subject to factory lead times
1101290 - 3/4" NPT SIB30/8 Inverted Bucket Steam Trap, Stainless Steel, PMO 58 PSIG - Spirax Sarco
$907.09
Should ship between 12 Nov and 26 Nov
Subject to factory lead times
1101295 - 3/4" SW SIB30/8 Inverted Bucket Steam Trap, Stainless Steel, PMO 58 PSIG - Spirax Sarco
$907.09
Should ship between 12 Nov and 26 Nov
Subject to factory lead times
1101390 - 3/4" NPT SIB30/5 Inverted Bucket Steam Trap, Stainless Steel, PMO 290 PSIG - Spirax Sarco
$907.09
Should ship between 12 Nov and 26 Nov
Subject to factory lead times
1101395 - 3/4" SW SIB30/5 Inverted Bucket Steam Trap, Stainless Steel, PMO 290 PSIG - Spirax Sarco
$901.23
Should ship between 12 Nov and 26 Nov
Subject to factory lead times
1101490 - 3/4" NPT SIB30/7 Inverted Bucket Steam Trap, Stainless Steel, PMO 123 PSIG - Spirax Sarco
$907.09
Should ship between 12 Nov and 26 Nov
Subject to factory lead times
1101495 - 3/4" SW SIB30/7 Inverted Bucket Steam Trap, Stainless Steel, PMO 123 PSIG - Spirax Sarco
$901.23
Should ship between 12 Nov and 26 Nov
Subject to factory lead times
1105095 - 3/4" SW SIB45/5 Inverted Bucket Steam Trap, Stainless Steel, PMO 652 PSIG - Spirax Sarco
$2,756.43
Should ship between 12 Nov and 26 Nov
Subject to factory lead times
1105290 - 3/4" NPT SIB45/6 Inverted Bucket Steam Trap, Stainless Steel, PMO 290 PSIG - Spirax Sarco
$1,895.05
Should ship between 12 Nov and 26 Nov
Subject to factory lead times
1105490 - 3/4" NPT SIB45/8 Inverted Bucket Steam Trap, Stainless Steel, PMO 123 PSIG - Spirax Sarco
$1,984.12
Should ship between 12 Nov and 26 Nov
Subject to factory lead times
1105590 - 3/4" NPT SIB45/10 Inverted Bucket Steam Trap, Stainless Steel, PMO 65 PSIG - Spirax Sarco
$1,895.05
Should ship between 12 Nov and 26 Nov
Subject to factory lead times
1100090 - 1/2" NPT SIB30/6 Inverted Bucket Steam Trap, Stainless Steel, PMO 170 PSIG - Spirax Sarco
$907.09
Should ship between 12 Nov and 26 Nov
Subject to factory lead times
1100095 - 1/2" SW SIB30/6 Inverted Bucket Steam Trap, Stainless Steel, PMO 170 PSIG - Spirax Sarco
$901.23
Should ship between 12 Nov and 26 Nov
Subject to factory lead times
1100190 - 1/2" NPT SIB30/4 Inverted Bucket Steam Trap, Stainless Steel, PMO 435 PSIG - Spirax Sarco
$901.23
Should ship between 12 Nov and 26 Nov
Subject to factory lead times
1100195 - 1/2" SW SIB30/4 Inverted Bucket Steam Trap, Stainless Steel, PMO 435 PSIG - Spirax Sarco
$907.09
Should ship between 12 Nov and 26 Nov
Subject to factory lead times
1100290 - 1/2" NPT SIB30/8 Inverted Bucket Steam Trap, Stainless Steel, PMO 58 PSIG - Spirax Sarco
$907.09
Should ship between 12 Nov and 26 Nov
Subject to factory lead times
1100295 - 1/2" SW SIB30/8 Inverted Bucket Steam Trap, Stainless Steel, PMO 58 PSIG - Spirax Sarco
$901.23
Should ship between 12 Nov and 26 Nov
Subject to factory lead times
1100390 - 1/2" NPT SIB30/5 Inverted Bucket Steam Trap, Stainless Steel, PMO 290 PSIG - Spirax Sarco
$901.23
Should ship between 12 Nov and 26 Nov
Subject to factory lead times
1100395 - 1/2" SW SIB30/5 Inverted Bucket Steam Trap, Stainless Steel, PMO 290 PSIG - Spirax Sarco
$901.23
Should ship between 12 Nov and 26 Nov
Subject to factory lead times
1100490 - 1/2" NPT SIB30/7 Inverted Bucket Steam Trap, Stainless Steel, PMO 123 PSIG - Spirax Sarco
$907.09
Should ship between 12 Nov and 26 Nov
Subject to factory lead times
1100495 - 1/2" SW SIB30/7 Inverted Bucket Steam Trap, Stainless Steel, PMO 123 PSIG - Spirax Sarco
$901.23
Should ship between 12 Nov and 26 Nov
Subject to factory lead times
1101090 - 3/4" NPT SIB30/6 Inverted Bucket Steam Trap, Stainless Steel, PMO 170 PSIG - Spirax Sarco
$901.23
Should ship between 12 Nov and 26 Nov
Subject to factory lead times
1101095 - 3/4" SW SIB30/6 Inverted Bucket Steam Trap, Stainless Steel, PMO 170 PSIG - Spirax Sarco
$901.23
Should ship between 12 Nov and 26 Nov
Subject to factory lead times
1101191 - 3/4" NPT SIB30/4 Inverted Bucket Steam Trap, Stainless Steel, PMO 435 PSIG - Spirax Sarco
$907.09
Should ship between 12 Nov and 26 Nov
Subject to factory lead times
1101195 - 3/4" SW SIB30/4 Inverted Bucket Steam Trap, Stainless Steel, PMO 435 PSIG - Spirax Sarco
$907.09
Should ship between 12 Nov and 26 Nov
Subject to factory lead times
1101290 - 3/4" NPT SIB30/8 Inverted Bucket Steam Trap, Stainless Steel, PMO 58 PSIG - Spirax Sarco
$907.09
Should ship between 12 Nov and 26 Nov
Subject to factory lead times
1101295 - 3/4" SW SIB30/8 Inverted Bucket Steam Trap, Stainless Steel, PMO 58 PSIG - Spirax Sarco
$907.09
Should ship between 12 Nov and 26 Nov
Subject to factory lead times
1101390 - 3/4" NPT SIB30/5 Inverted Bucket Steam Trap, Stainless Steel, PMO 290 PSIG - Spirax Sarco
$907.09
Should ship between 12 Nov and 26 Nov
Subject to factory lead times
1101395 - 3/4" SW SIB30/5 Inverted Bucket Steam Trap, Stainless Steel, PMO 290 PSIG - Spirax Sarco
$901.23
Should ship between 12 Nov and 26 Nov
Subject to factory lead times
1101490 - 3/4" NPT SIB30/7 Inverted Bucket Steam Trap, Stainless Steel, PMO 123 PSIG - Spirax Sarco
$907.09
Should ship between 12 Nov and 26 Nov
Subject to factory lead times
1101495 - 3/4" SW SIB30/7 Inverted Bucket Steam Trap, Stainless Steel, PMO 123 PSIG - Spirax Sarco
$901.23
Should ship between 12 Nov and 26 Nov
Subject to factory lead times
1105095 - 3/4" SW SIB45/5 Inverted Bucket Steam Trap, Stainless Steel, PMO 652 PSIG - Spirax Sarco
$2,756.43
Should ship between 12 Nov and 26 Nov
Subject to factory lead times
1105290 - 3/4" NPT SIB45/6 Inverted Bucket Steam Trap, Stainless Steel, PMO 290 PSIG - Spirax Sarco
$1,895.05
Should ship between 12 Nov and 26 Nov
Subject to factory lead times
1105490 - 3/4" NPT SIB45/8 Inverted Bucket Steam Trap, Stainless Steel, PMO 123 PSIG - Spirax Sarco
$1,984.12
Should ship between 12 Nov and 26 Nov
Subject to factory lead times
1105590 - 3/4" NPT SIB45/10 Inverted Bucket Steam Trap, Stainless Steel, PMO 65 PSIG - Spirax Sarco
$1,895.05
Should ship between 12 Nov and 26 Nov
Subject to factory lead times
FAQ
- Three working principles. Mechanical traps (float and thermostatic, inverted bucket) use the density difference between steam and condensate to drive a valve. Thermostatic traps (bellows, bimetal) use the temperature difference, opening for cooler condensate and closing on hot steam. Thermodynamic traps (the disc style) use the velocity difference, snapping shut as flashing condensate accelerates through them. F&T and inverted bucket are the go-to for process equipment, thermostatic for tracer lines and drips, thermodynamic for outdoor steam mains where freeze tolerance matters.
- Failed open: the trap blows live steam through. You hear it, you can see it on a thermal imager, and you pay for the wasted steam. Failed closed: condensate backs up into the equipment, which loses heat transfer and starts hammering. Trap surveys (ultrasonic and thermal) catch both. Industry rule of thumb: roughly 20% of traps in an untracked plant are failed at any given time, which is a massive efficiency loss.
- Annual at minimum, semi-annual or quarterly for high-pressure or high-volume systems. The cost of a trap survey is recovered many times over in steam savings on a plant that hasn't been tracked. Tag every trap, log every inspection, and replace failed traps within the next outage. Per ASME PTC 39 (Steam Traps), testing methods include temperature, ultrasonic, and visual sight glass. The savings are real and measurable.
- On steam mains, drip stations, tracer lines, and outdoor service where freeze protection matters. Thermodynamic disc traps are compact, work over a wide pressure range, and tolerate freezing without damage. They cycle (snap open, snap closed) instead of modulating, which means a small amount of flash steam loss on each cycle - not ideal for high-efficiency process applications. Use them where their ruggedness and simplicity outweigh the small efficiency hit.
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About NISCO Inc.
NISCO offers a wide range of pressure gauges & instruments, diaphragm seals, thermometers, valves, and flow control products to the industrial and commercial marketplaces, as well as other resellers like ourselves. We can also provide other value-added services such as gauge repair, NIST traceable calibration, diaphragm seal assembly, and valve automation. NISCO takes pride in providing extensive product knowledge, helpful customer service, and market competitive pricing to help fit whatever need you may have because it is our goal to be regarded by our customers as the best supplier of pressure, temperature, and flow control products.