双金属片式疏水阀是一种由双金属片感温元件组成的阀门，它随蒸汽温度升降受热变形，推动阀心开关阀门。双金属片式疏水阀设有调整螺栓，可根据需要调节使用温度，一般过冷度调整范围低于饱和温度15℃-30℃，背压率大于70%，能排不凝结气体，不怕冻，体积小，能抗水锤，耐高压，任意位置都可安装。
BM140 Series bimetallic steam traps and air eliminators are simple and robust traps, recommended for steam where condensate sensible heat can be recovered, steam tracing lines, drip points, storage tank coils, steam air venting, etc. The use of condensate sensible heat reduces the steam consumption.
Connections are female screwed, socket weld, butt weld or flanged.
Main Features
•Modulating discharge.
•Discharges condensate below steam temperature.
•Excellent air discharge.
•Operates on superheated steam.
•Unaffected by water hammer and vibrations.
•Built-in strainer.
Options: DIN or ANSI connections
Use: Saturated and superheated steam.
Connections: Female screwed BSP or NPT
Flanged DIN or ANSI
SW - Socket weld to ANSI B 16.11
BW - Butt weld to ANSI B16.25
Installation: Horizontal installation recommended, can be installed in any position.
Materials
| 1 | Body | ASTM A182F22(1.7380) |
| (Equiv.10CrMo910) | ||
| 2 | Cover | ASTM A182F22(1.7380) |
| (Equiv.10CrMo910) | ||
| 3 * | Gasket | St.St./Graphite |
| 4 * | Valve assembly | Hardened St.Steel |
| 5 * | Strainer screen | St.Steel (1.4301) |
| 6 * | Seat gasket | St.Steel |
| 7 | Studs | ASTM A320 Gr.L7 |
| 7A | Nuts | ASTM A194 Gr.4 |
* Available spare parts
Body Limiting Conditions
| Flanged PN160* Allow. Pres. | Flanged ANSI 900** Allow. Pres. | Related Temp. |
| 160 bar | 128.6 bar | 300°C |
| 156 bar | 120.7 bar | 350°C |
| 141 bar | 101.4 bar | 450°C |
| 52 bar | 46 bar | 550°C |
| * According to EN1092-1:2007 | ** Acc. to EN1759-1:2004 Operating pressure : 25 to 140 bar | |
Dimensions (mm)
| Size DN | BSP/NPT/SW/BW | DIN PN160 | ANSI 900 | |||||||
| A | C | D | Weight kgs | B | F* | Weight kg | B | F* | Weight kg | |
| 15 | 160 | 120 | 115 | 6.3 | 52.5 | 230 | 8.8 | 60 | 230 | 10.2 |
| 20 | 160 | 120 | 115 | 6.3 | 65 | 230 | 11.1 | 65 | 230 | 11.6 |
| 25 | 160 | 120 | 115 | 6.3 | 70 | 230 | 11.8 | 75 | 230 | 14 |
* Note: different face to face dimensions on request.
