SP-CRD units are in service on outside distribution lines all over the world. Here is an example of how SP-CRD would be applied on a distribution line that experiences dramatic changes in ambient conditions.

A common outdoor distribution line may have the following characteristics:

• 8" IPS
• 1" fiberglass insulation
• 100 linear feet between drain points
• Distributing 150 psig steam
• -20 °F minimum ambient in winter
• 70 °F ambient in summer

* 0 °F equals to -17.222°C, every 1°C = 33.8°F

When the ambient is -20 °F (-28.89°C), this 8" line will generate 41 lbs. of condensate/hour. The SP-CRD model recommended must be able to discharge a minimum of 41 lbs. of condensate/hour at 150 psig. The selected Model #03 has a condensate capacity of 106 lbs/hour at 150 psig. The steam loss during -20 °F (-28.89 °C) condition is only 0.25lbs/hour. This same 8" line at 70°F (21.11°C) ambient will now generate 30lbs. of condensate/hour. Our Model #03 still has a condensate capacity of 106 lbs/hour. How does this reduction in condensate affect steam loss? The reduction in condensate load causes the steam loss to increase 0.50 lbs/hour. This "loss" is significantly less than steam loss figures stated by most steam trap manufacturers for their brand new traps.

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