Selection of steam traps
Features of various steam traps (main features)
| Number | Features | Inverted barrel type | Float type | Lever float type | Bimetallic type | Diaphragm type | Disc type |
| 1 | Working mode | Intermittent | Continuous | Continuous | Intermittent (1) | Intermittent | Intermittent |
| 2 | Energy saving | Excellent | Good | Good | Fair | General | Poor |
| 3 | Wear resistance | Excellent | Good | Good | Excellent | Excellent | Poor |
| 4 | Corrosion resistance | Excellent | Good | Good | Excellent | Excellent | Poor |
| 5 | Water hammer resistance | Excellent | Poor | Bad | Excellent (2) | Excellent | Excellent |
| 6 | Air and CO2 removal capability | Can | Requires additional emptying device | Ok | Can | OK | No |
| 7 | Working under back pressure | Excellent | Excellent | Excellent | Fair | General | Fair |
| 8 | Response to condensate | Immediately | Immediately | Immediately | Delayed | Delayed | Delayed |
| 9 | Ability to handle dirt | Excellent | Poor | Bad | Fair | Not good | Poor |
| 10 | Action check | Easy | Difficult | Difficult | Easy | Easy | Easy |
| 11 | Steam loss | Difficult | Easy | Easy | Difficult | Difficult | Easy |
| 12 | Can be used for superheated steam | Can | Impossible | Impossible | Can | Not OK | Yes |
| 13 | Saturated water removal capability | Can | Horizontal or vertical | Horizontal or vertical | Water below saturation temperature | Water below saturation temperature | Water below saturation temperature |
| 14 | Installation method | Horizontal or vertical | No | No | Any direction | Any direction | Horizontal |
| 15 | Utilization of sensible heat of condensate | No | Float type | Lever float type | Can | OK | No |
Note:
(1) Continuous discharge at low load.
(2) The bimetallic and diaphragm types of thermostatic steam traps are good, and the others are average in water hammer resistance.
Ordering instructions:
1. Give the specific product model for this product manual.
2. Give the connection diameter and connection method. If flange connection is required, please give detailed flange type and standard. (GB, JB, HG.ASME/ANSI, JIS, BS and other standards can be provided according to user needs)
3. Give the maximum working pressure or design pressure that may be encountered.
4. Specify the required accessories.
5. Specify the required valve body material, etc.
Instructions:
When customers order products, if it is a flange connection, if the customer does not make special instructions on the sealing surface type of the flange, it will be manufactured according to the GB/T9113 series national standard flange: when PN < 4.0MPa, it is processed according to the RF surface (raised surface), and when PN ≥ 4.0MPa, it is processed according to the F surface (concave surface).
