Where do you put a thermostatic steam trap?
The liquid expansion trap can be used as a start-up drain trap on low pressure superheated steam mains where a long cooling leg is guaranteed to flood with cooler condensate. It is able to withstand vibration and waterhammer conditions.
How does a thermostatic steam trap work?
Thermostatic steam traps reduce start-up times and improve overall efficiency. Balanced Pressure Thermostatic Traps use a special bellows diaphragm. The diaphragm is designed to open in response to pressure and temperature to discharge air and condensate, and to close against passage of steam.
Which type of trap is normally used on a steam radiator?
Thermodynamic traps are commonly used on steam mains and in tracing applications. Their simple, inexpensive design uses a single moving disc which raises from its valve seat under pressure of the condensate, allowing the flow of condensate to the outlet.
What is the purpose of a steam trap on a radiator?
A steam trap is found at the lower or outlet end of a two pipe steam radiator heat system where it works to keep hot steam in the radiator but lets steam condensate (water ) flow back down the return pipe so that it can return to the steam boiler.
What happens if you oversize a steam trap?
An oversized F trap barely opens to dump the little bit of condensate it has to handle. The trap’s pin rides too closely to the trap’s seat and that leads to metal erosion of both the pin and the seat as the condensate screams by the barely open exit hole.
What is a float and thermostatic steam traps?
Float & Thermostatic Steam Traps. Fs contain a float-operated valve to continually discharge condensate and a thermostatic air vent which discharges air. Body materials available are Cast Iron, Ductile Iron, Cast Steel, & Stainless Steel for pressure up to 450 psig.
How do you install a steam trap?
Locate the steam trap below the lowest condensate discharge point of the equipment. Never install a rise in the pipe ahead of a steam trap. Check valves should be installed after the steam traps in most applications. Develop and maintain installation standards for all applications.
How do I choose a steam trap size?
A large number of steam users improperly select trap size based on the size of existing piping. However, trap size should closely match the size of the piping on the outlet side of the equipment that supplies condensate to the trap. 15 mm [1/2 in.]
What happens if you undersize a steam trap?
Under- and oversizing steam traps can have adverse effects on the overall system; undersized traps will cause frequent cycling and potentially reduce heat transfer as condensate may back up into the equipment.
What happens when air enters a thermostatic trap?
Thermostatic Radiator Traps The thermostatic element in a radiator trap responds to temperature to open or close. At start-up when air and condensate are cooler, the thermostatic element (diaphragm) contracts pulling the valve head off of the valve seat. The trap then opens and discharges air and cool condensate.
How do you know if a steam trap is bad?
Condensate should usually be flowing through a trap, and the sound should have a lower pitch. So, if this sound changes and appears much closer to a higher pitched sound like that of steam flow, then the trap may have a large amount of flash steam or may be leaking live steam and should be inspected further.
How often should steam traps be replaced?
every three to four years
On average, steam traps are replaced every three to four years.
How to replace a steam vent on a radiator?
Types&Properties of Steam Vents on 1&2-Pipe Steam Systems.
How to troubleshoot steam radiator problems?
– Radiator pitch problems: doesn’t slope towards the steam trap – the radiator should slope away from the steam supply valve and towards the steam trap – The radiator steam trap is clogged, damaged, or stuck closed – The steam pipe feeding the radiator is undersized or the condensate return not pitched properly, leading to blockage
How to maintain a steam radiator?
Test your supply valve.
How does a steam vent on a steam radiator work?
– HOW DO STEAM VENTS WORK – HISSING SOUNDS AT STEAM RADIATORS – STEAM VENTS THAT DO NOT SHUT OFF WHEN THEY SHOULD – STEAM VENTS THAT DO NOT OPEN WHEN THEY SHOULD – NOISY STEAM VENTS OR STEAM RADIATORS – STEAM VENTS THAT LEAK OR SPIT WATER