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Armstrong 1/2" Steam Trap W/Strainer #880

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$76.10 - $89.88
{{resource("/ProductPage/Labels/List")}} $105.00 - $141.00

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Long Lasting Armstrong steam traps.

Armstrong #880 steam trap with strainer is used on the return line to trap excess steam returning from the press and convert it into water which is returned to the boiler. It traps with 7/64" orifice for 125 PSI. The trap openings are 1/4" larger than the OD of the pipe and will fit over 1/2" (STE-3) or 3/4" (STE-9) OD pipe. Available in a variety of sizes. Manufacturers warranty applies.

Features

  • Used on the return line
  • Turns steam to water before returning to boiler
  • Use with a swing or spring check valve
  • Built in strainer
  • Made in the U.S.A.
  • Long lasting

Product Specifications

Brand: Armstrong
Units: Each
Size / Dimension: 1/2"
Material: Cast Iron
My boiler often had the rattle or hammer noise at the water line. I had changed the check valves a couple times but after the month I heard that noise again. The water is low and the pump keep working more than usual when the noise is heard.
Anonymous
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Working steam traps are key to preventing water hammer in the lines. A steam trap’s job is to remove water/condensate that accumulates in the line and return it to your return tank.
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How can I tell which size valve I need?
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The size of our valves are printed above the WSP rating on the valve.
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Why do some valves come with a WSP and WOG rating, and others just talk about the psi ranges?
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Some valves can be used on water, oil, and air (WOG) as well as steam. Steam is a more abrasive substance, so the WSP (working steam pressure) rating tends to be lower than the WOG rating. Some items, just as steam traps and steam pressure reducing valves are only used in conjunction with steam, so psi ranges are associated with these items.
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Do you carry and sell rebuilt valves?
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No, we do not sell any valves that have been rebuilt.
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Where should a steam trap be located?
Anonymous
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Steam traps should be located on the return line after each piece of equipment that is to be drained. Ideally the traps should be installed where they are easily accessible, below the equipment that is to be drained, and in a close proximity to the equipment.
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What does a steam trap do?
Anonymous
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A steam trap’s function is to “trap” steam and to collect condensate so it will be transferred back into the return line, and back to the boiler where the condensate will be changed into steam.
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What does WSP refer to?
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WSP stands for “working steam pressure”.
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What does WOG stand for?
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WOG stands for “water, oil, and gas (steam)”.
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What does PSI refer to?
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PSI is a unit of measurement. It stands for pounds per square inch.
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Why would a trap that seems to be discharging water experience problems when connected to the return line?
Anonymous
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1. If this is experienced, there may be a problem in the return line, back pressure may be diminishing the capacity of the trap: 1. Return line may be too small. If this were the case the trap would be hot. 2. Other traps on the line may be blowing steam. This too would cause the trap to be hot. 3. There may be a blockage in the return line. The trap would be hot. 4. There may be an excessive vacuum in the return line. If this were the case the trap would be cold. The atmospheric vent in condensate receiver may be plugged. The trap could either be hot or cold.
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How can I tell if my steam traps are bad?
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Steam traps from time to time may fail. However, trap failure is not always easy to detect as steam may be blowing back into the pipe. Many experts agree that the best way to test a trap is to install test valves below the steam trap. If steam or nothing comes out of the test valve, then the trap is blown, however is condensate comes out, then the trap is working properly. Another extremely accurate way of testing traps is to use ultrasonic detection. Ultrasonic detectors translate ultrasonic emissions into sounds the human ear can hear. Technicians that use these detectors on a daily basis have an extremely high rate of accuracy. Someone with experience in using this technique should be consulted. The reason that these methods are most often recommended as opposed to temperature measurements, is because of the many different variables in the piping systems that may give inaccurate results about the traps efficiency such as back pressure or strainer and valve problems.
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What would cause my pressing unit not to heat properly if the trap seems to be working properly?
Anonymous
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If the unit is not heating properly: 1. The problem may be that one trap is being used to drain more than one piece of equipment. For example, if the trap is trying to work for more than one shirt unit, legger, or utility pressing station at a time, the trap will not work as efficiently. Condensate and air from one of those units may not reach the trap. The solution would be to install a trap on each unit. 2. Another reason this could happen would be if the trap were too small for the job. 3. The trap may have inadequate air handling capacities or air may not be reaching the trap. Try using alternate air vents.
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Why would a trap be losing steam if it was just replaced?
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If the trap is blowing live steam, it could be due to: 1. The valve may not be seating properly due to scale or dirt being lodged in the trap or there may be worn or defective parts in the trap 2. The trap may have lost its prime—close inlet valve for a few minutes, and slowly open it back up. The trap should catch its prime. Prime loss is typically due to frequent or sudden drops in pressure.
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Why would a steam trap get hot and not release any condensate?
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A. If the trap is getting hot and not releasing any condensate, this would suggest that there is no moisture or condensate making it to the trap. The trap may be installed above a leaky by-pass valve, there may be a broken pipe in the syphon drained cylinder, or there may be vacuum water heater coils that could prevent drainage.
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Why would a steam trap be cold?
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The trap is not discharging any water or condensate. There are a couple of reasons why this would happen: 1. The pressure may be too high. 2. There maybe no water or steam coming to the trap 3. There maybe a defective or worn piece inside the trap not allowing the trap to work properly. 4. The trap body could be filled with scale or dirt 5. The bucket vent, in an inverted bucket trap, may be filled with dirt 6. If it’s a disc trap, the trap may have been installed backwards.
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How can I tell which size valve I need?
Anonymous
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The size of our valves are printed above the WSP rating on the valve.
Staff
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I’m trying to get a rebate from my electric company; can you tell me if the bucket steam traps are “mechanical”?
Anonymous
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This isn’t a term that is used very often, but yes it would be considered mechanical.
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Why do some of the traps have water inside of them when a customer first receives them?
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All traps are tested to ensure they are working before they leave the plant. Some condensate from that testing may be left in the trap when being shipped.
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What is the life expectancy of a steam trap?
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Steam traps can last indefinitely if they are maintained and operating in suitable conditions. Armstrong warranties their cast iron traps for 1-year. United Brass warranties their traps for 3-months.
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Why would I buy the steam trap with a strainer versus a trap without a strainer?
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Steam traps that have the strainer are considered a “preventative maintenance” feature. Rust and dirt particles that are floating around in the steam drop into the strainer portion of the trap because these substances are heavier than steam. This function prevents these contaminating particles from building up in the iron or other pieces of equipment causing problems by blocking the amount of steam passing through the system.
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I replaced all traps & valves but the problem still continues, the water from return tank is too hot and it makes the pump runs over time. I worry that will wear out the pump.
Anonymous
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Extra hot water in the return tank is caused by either bad traps, bad float valves in the return tank, or a bad swing/spring check valve between the pump and boiler.
Staff
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Why would I buy the steam trap with a strainer versus a trap without a strainer?
Anonymous
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Steam traps that have the strainer are considered a “preventative maintenance” feature. Rust and dirt particles that are floating around in the steam drop into the strainer portion of the trap because these substances are heavier than steam. This function prevents these contaminating particles from building up in the iron or other pieces of equipment causing problems by blocking the amount of steam passing through the system.
Staff
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Would a bad trap affect the temperature of the equipment?
Anonymous
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Possibly, if the trap failed in the closed position and condensate was baking up into the equipment, it could prevent the steam from bringing the equipment up to the proper temperature.
Staff
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Why does my Steam trap jingle?
Anonymous
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The traps should jingle a little because there is a moving part inside the trap. It is the bucket inside.
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What does the “bucket” in bucket trap refer to?
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The bucket refers to the “upside down bucket” that is located inside of the trap. The trap works based on the differences between steam and water density. Steam that enters under the upside down bucket causes the bucket to float and close the discharge valve. As condensate enters the trap, it causes the bucket to sink and thus open the trap valve and allow condensate to leave the trap and go into the return line.
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