Steam Traps

Steam traps are a type of automatic valve that filters out condensed steam and non-condensed steam, such as air without letting steam escape. Steam is used for regularly for heating or as a driving force for mechanical power. Used to ensure that the steam is not wasted in such applications.
Mechanical Traps
Mechanical traps sense the difference in density between steam and condensate. Condensate from this type of trap is continually discharged, leaving none to the process. These are the most commonly used steam traps utilised today in systems that require large discharge capacities.
Bucket traps use an inverted bucket as a float device that releases the condensate once the bucket to loses buoyancy and sinks, opening the valve allowing the condensate to be released.
A floating ball trap is a simple mechanical trap that uses the weight of the ball, which acts as a lever keeping the valve closed. As condensate enters the trap it raises the float, opening the valve releasing the condensate.
Thermostatic Traps
Thermostatic traps utilise a temperature sensing element to determine when to discharge the condensate.
Balanced pressure traps operate by balancing the steam pressure and internal pressure of the thermostatic element. At start-up the valve is open, but once the steam reaches a certain temperature bellow expand to close it. These steam traps can be used in steam tracing applications.
Thermodynamic Traps
Thermodynamic traps use the difference in velocity between steam and condensate to operate. As steam enters, it can be freely discharged through a valve. When steam reaches the underside of the disc its velocity is much higher than condensate, creating a pressure drop which closes the valve head. The valve stays shut until the steam pressure above the disc drops, allowing the valve to open and the discharge cycle to repeat.
Steam Trap Types
There are three main types of steam traps to consider, these are:
Applications
Steam traps can be used anywhere there is a steam system and a need to discharge condensate. These include:
• Industrial dryers
• Laundries
• Space heating
• Steaming ovens

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Description Price Trap Type Connection Orientation Maximum Working Pressure Maximum Temperature Body Material Gasket Material Connection Gender Connection Size Thread Standard or Connection Type
RS Stock No. 507-5885
Mfr. Part No.1458200
$667.66
Each
units
Ball Float 1/2 in BSP Horizontal 14.6 bar +250°C Stainless Steel Graphite - 1/2in BSP
RS Stock No. 720-9194
BrandRS PRO
$199.28
Each
units
Thermodynamic 1/2 in BSP Female Horizontal 42 bar +300°C Stainless Steel Graphite Female 1/2in BSP
RS Stock No. 365-6460
Mfr. Part No.1225600
$333.01
Each
units
Thermostatic 1/2 in BSP Female Horizontal 13 bar +250°C Brass Stainless Steel Female 1/2in BSP
RS Stock No. 799-8890
Mfr. Part No.29003
$240.88
Each
units
Float & Thermostatic 3/4 in Horizontal, Vertical 10 bar +198°C SG Iron Graphite, Stainless Steel - 3/4in BSP
RS Stock No. 365-6432
Mfr. Part No.1226300
$336.11
Each
units
Thermostatic 1/2 in BSP Female Horizontal 13 bar +250°C Brass Stainless Steel Female 1/2in BSP
RS Stock No. 917-1930
Mfr. Part No.551094
$4,826.73
Each
units
- - - - +50°C Stainless Steel - - - -
RS Stock No. 365-6555
Mfr. Part No.670400
$749.02
Each
units
Inverted Bucket 3/4 in BSP Female Vertical 4 bar +300°C Iron Graphite Female 3/4in BSP
RS Stock No. 917-1909
Mfr. Part No.551276
$1,243.51
Each
units
Thermostatic - Horizontal, Vertical 10 bar - SG Iron Stainless Steel Female - -
RS Stock No. 917-1772
Mfr. Part No.446131
$928.08
Each
units
Thermostatic - Vertical 6 bar +165°C Stainless Steel - - 1in -
RS Stock No. 720-9207
BrandRS PRO
$319.71
Each
units
Thermodynamic 1 in BSP Female Horizontal 42 bar +300°C Stainless Steel Graphite Female 1in BSP
RS Stock No. 917-1937
Mfr. Part No.551285
$1,243.51
Each
units
Thermostatic - Horizontal, Vertical 14 bar - SG Iron Stainless Steel Female - -
RS Stock No. 720-9235
BrandRS PRO
$390.14
Each
units
Float & Thermostatic 1 in BSP Female Horizontal, Vertical 14 bar +198°C SG Iron Graphite, Stainless Steel Female 1in BSP
RS Stock No. 917-1754
Mfr. Part No.445682
$875.51
Each
units
Thermostatic - Vertical 6 bar +165°C Stainless Steel - - 1/2in -
RS Stock No. 365-6527
Mfr. Part No.670200
$638.98
Each
units
Inverted Bucket 1/2 in BSP Female Vertical 8.5 bar +300°C Iron Graphite Female 1/2in BSP
RS Stock No. 720-9229
BrandRS PRO
$344.77
Each
units
Float & Thermostatic 3/4 in BSP Female Horizontal, Vertical 14 bar +198°C SG Iron - Female 3/4in BSP
RS Stock No. 917-1738
Mfr. Part No.348538
$914.19
Each
units
- - Vertical - - Carbon Steel - - - -
RS Stock No. 799-8884
Mfr. Part No.29002
$240.88
Each
units
Float & Thermostatic 1/2 in Horizontal, Vertical 10 bar +198°C SG Iron Graphite, Stainless Steel - 1/2in BSP
RS Stock No. 507-5879
Mfr. Part No.1458300
$667.66
Each
units
Ball Float 3/4 in BSP Horizontal 14.6 bar +250°C Stainless Steel Graphite - 3/4in BSP
RS Stock No. 917-1912
Mfr. Part No.551281
$696.40
Each
units
Thermostatic - Horizontal, Vertical 14 bar - SG Iron Stainless Steel Female - -
RS Stock No. 720-9260
BrandRS PRO
$297.55
Each
units
Inverted Bucket 3/4 in BSP Female Horizontal 12 bar +250°C Iron - Female 3/4in BSP
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