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VP000 Boiler Blowdown Valve
VP000 Boiler Blowdown Valve

VP000 Boiler Blowdown Valve

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VP000 Boiler Blowdown Valve

Description

The rapid blowdown valve at the bottom of the boiler is a pressure-bearing special valve installed on the boiler, steam drum, mud drum, and lower header of the water-cooled wall. It is used to discharge contaminated boiler water under high-temperature and high-pressure conditions.

After the feedwater is heated and evaporated into steam, dissolved salts, suspended mud and sediment in the water continuously accumulate in the boiler water. The blowdown valve discharges a portion of the wastewater to control the total dissolved solids (TDS) content of the boiler water, remove the deposited sludge, prevent boiler scaling, corrosion, steam-water foaming, and steam-water co-boiling problems, avoid overheating and cracking of the heating surface, and ensure qualified steam quality and safe operation of the boiler

The VP000 boiler blowdown valve has the following features:

  • Quick opening and closing, instantaneous strong flushing of the discharge, reducing the erosion of the sealing surface.
    Opening/closing time < 2 seconds, manual closing < 1 second.
  • Hard-sealed material is resistant to erosion and has a long service life, suitable for high-temperature saturated water conditions.
  • The packing has a long service life.
  • The valve seat can be replaced by an upper-pressing type, making on-site maintenance of the valve convenient and fast.
  • The flow path is simple and less likely to be clogged with impurities.
  • Standard with manual operation, optional with pneumatic, and can be automatically opened for discharging in accordance with the controller to reduce heat energy loss caused by excessive discharging.

Video

Product Advantage

Typical Applicaon Scenarios

Technical Parameters

Size：DN15(NPS1/2)～DN50（NPS2）

Pressure：PN16～PN100、Class150～Class600

Connection：flange, thread, BW,SW

Air Pressure：0.4～0.6Mpa

Working Temperature： 100~320℃

Working medium: Saturated boiler water

Flow characteristic: Quick opening

Leakage level: V grade

Actuator model: MT1R + KS

Rated Cv

DN DN15 DN20 DN25 DN32 DN40 DN50
Rated Cv 12 12 12 22 22 22
Travelmm 10 10 10 10 10 10

Performance

Typical Flow Characteristic Curve

Rated Cv and Travel

Maximum Closing Differential Pressure (MPa)

Dimensions and Weight

Figure 4 Manual Blowdown Valve
Figure 4 Manual Blowdown Valve
Figure 3 Pneumatic Blowdown Valve
Figure 3 Pneumatic Blowdown Valve
DN Actuator L H1 H2 H3 W
PN16 PN25 PN40 PN63/PN100 Class150 Class300 Class600 Pneumatic Manual
DN15 MT1R+KS 130 130 130 – 130 130 – 75 140 280 180 180
DN20 MT1R+KS 150 150 150 – 184 194 – 75 140 280 180 180
DN25 MT1R+KS 160 160 160 – 184 197 – 75 140 280 180 180
DN32 MT1R+KS 180 180 180 – 180 222 – 90 130 280 180 180
DN40 MT1R+KS 200 200 200 – 222 235 – 90 130 280 180 180
DN50 MT1R+KS 230 230 230 – 254 267 – 105 130 280 180 180
DN20 MT2R+KS – – – 206 – – 206 75 140 380 280 270
DN25 MT2R+KS – – – 210 – – 210 75 140 380 280 270
DN32 MT2R+KS – – – 251 – – 251 90 160 380 280 270
DN40 MT2R+KS – – – 251 – – 251 90 160 380 280 270
DN50 MT2R+KS – – – 286 – – 286 105 160 380 280 270

Structure and Characteristics

Figure 2 Manual Blowdown Valve
Figure 2 Manual Blowdown Valve
Figure 1 Pneumatic Blowdown Valve
Figure 1 Pneumatic Blowdown Valve

 

NO. Name
1 Body
2 Seat
3 Wrapping pad
4 Core
5 Pressure cage
6 Guide cage
7 Sealing gasket
8 Cover
9 Bolt
10 Nut
11 Packing
12 Packing sleeve
13 Stem
14 Actuator

Common Material and Temperature Range

Body Bonnet Core Seat Stem Bolt/Nut
WCB
CF8		 WCB
CF8		 304+STL 304+STL 410/304 A193 B7/A194 2H
A193 B8/A194 8

(1)The operating temperature range of the body material corresponding to the pressure range（MPa）

Body Bonnet Core Seat Stem Bolt/Nut
WCB
CF8		 WCB
CF8		 304+STL 304+STL 410/304 A193 B7/A194 2H
A193 B8/A194 8
Temp°C Class150 Class300
A105
(WCB)		 LF2
(LCB)		 F11
(WC6)		 F304
(CF8)		 F316L
(CF3M)		 A105
(WCB)		 LF2
(LCB)		 F11
(WC6)		 F304
(CF8)		 F316L
(CF3M)
-196 ~ -47 – – – 1.90 1.90 – – – 4.96 4.96
-46 ~ -30 – 1.96 – 1.90 1.90 – 5.17 – 4.96 4.96
-29 ~ 38 1.96 1.96 1.98 1.90 1.90 5.11 5.17 5.17 4.96 4.96
50 1.92 1.92 1.95 1.83 1.84 5.01 5.17 5.17 4.78 4.81
100 1.77 1.77 1.77 1.57 1.62 4.66 5.15 5.15 4.09 4.22
150 1.58 1.58 1.58 1.42 1.48 4.51 4.97 4.97 3.7 3.85
200 1.38 1.38 1.38 1.32 1.37 4.38 4.80 4.80 3.45 3.57
250 1.21 1.21 1.21 1.21 1.21 4.19 4.63 4.63 3.25 3.34
300 1.02 1.02 1.02 1.02 1.02 3.98 4.29 4.29 3.09 3.16
350 0.84 0.84 0.84 0.84 0.84 3.76 4.03 4.03 2.96 3.03
375 0.74 – 0.74 0.74 0.74 3.64 – 3.89 2.9 2.99
400 0.65 – 0.65 0.65 0.65 3.47 – 3.65 2.84 2.94
Temp℃ Class600 PN16
A105
(WCB)		 LF2
(LCB)		 F11
(WC6)		 F304
(CF8)		 F316L
(CF3M)		 A105
(WCB)		 LF2
(LCB)		 F11
(WC6)		 F304
(CF8)		 F316L
(CF3M)
-196 ~ -47 – – – 9.93 9.93 – – – 1.57 1.57
-46 ~ -30 – 10.21 – 9.93 9.93 – 1.61 – 1.57 1.57
-29 ~ 38 10.21 10.21 10.34 9.93 9.93 1.61 1.61 1.63 1.57 1.57
50 10.02 10.02 10.34 9.56 9.62 1.58 1.58 1.63 1.51 1.52
100 9.32 9.32 10.3 8.17 8.44 1.46 1.46 1.63 1.29 1.33
150 9.02 9.02 9.95 7.4 7.7 1.43 1.43 1.57 1.17 1.22
200 8.76 8.76 9.59 6.9 7.13 1.38 1.38 1.51 1.09 1.13
250 8.39 8.39 9.27 6.5 6.68 1.32 1.32 1.46 1.03 1.05
300 7.96 7.96 8.57 6.18 6.32 1.22 1.22 1.35 0.97 1.00
350 7.51 7.51 8.04 5.93 6.07 1.17 1.17 1.27 0.93 0.96
375 7.27 – 7.76 5.81 5.98 1.15 – 1.23 0.92 0.94
400 6.94 – 7.33 5.69 5.89 1.09 – 1.15 0.90 0.93
Temp°C PN25 PN40
A105
(WCB)		 LF2
(LCB)		 F11
(WC6)		 F304
(CF8)		 F316L
(CF3M)		 A105
(WCB)		 LF2
(LCB)		 F11
(WC6)		 F304
(CF8)		 F316L
(CF3M)
-196 ~ -47 – – – 2.45 2.45 – – – 3.92 3.92
-46 ~ -30 – 2.55 – 2.45 2.45 – 4.03 – 3.92 3.92
-29 ~ 38 2.52 2.55 2.55 2.45 2.45 4.03 4.03 4.08 3.92 3.92
50 2.47 2.55 2.55 2.36 2.37 3.95 3.95 4.08 3.78 3.8
100 2.29 2.54 2.54 2.02 2.08 3.66 3.66 4.06 3.23 3.33
150 2.23 2.45 2.45 1.83 1.9 3.57 3.57 3.93 2.93 3.04
200 2.16 2.37 2.37 1.70 1.76 3.46 3.46 3.79 2.72 2.82
250 2.06 2.28 2.28 1.60 1.65 3.29 3.29 3.64 2.56 2.63
300 1.91 2.11 2.11 1.51 1.56 3.06 3.06 3.38 2.42 2.50
350 1.82 1.98 1.98 1.46 1.5 2.92 2.92 3.18 2.33 2.40
375 1.80 – 1.91 1.44 1.47 2.88 – 3.06 2.30 2.36
400 1.70 – 1.80 1.41 1.45 2.72 – 2.89 2.26 2.32
Temp°C PN63 PN100
A105
(WCB)		 LF2
(LCB)		 F11
(WC6)		 F304
(CF8)		 F316L
(CF3M)		 A105
(WCB)		 LF2
(LCB)		 F11
(WC6)		 F304
(CF8)		 F316L
(CF3M)
-196 ~ -47 – – – 6.17 6.17 – – – 9.8 9.8
-46 ~ -30 – 6.35 – 6.17 6.17 – 10.08 – 9.8 9.8
-29 ~ 38 6.35 6.35 6.43 6.17 6.17 10.08 10.08 10.21 9.8 9.8
50 6.22 6.22 6.43 5.95 5.98 9.88 9.88 10.21 9.44 9.5
100 5.77 5.77 6.4 5.08 5.25 9.15 9.15 10.16 8.07 8.33
150 5.62 5.62 6.19 4.62 4.79 8.92 8.92 9.82 7.34 7.6
200 5.45 5.45 5.96 4.29 4.43 8.65 8.65 9.47 6.81 7.04
250 5.19 5.19 5.74 4.04 4.15 8.23 8.23 9.11 6.41 6.59
300 4.81 4.81 5.33 3.81 3.93 7.64 7.64 8.46 6.05 6.24
350 4.59 4.59 5.00 3.67 3.79 7.29 7.29 7.94 5.83 6.01
375 4.53 – 4.82 3.63 3.72 7.2 – 7.66 5.76 5.90
400 4.29 – 4.55 3.56 3.66 6.81 – 7.22 5.64 5.81

Size：DN15(NPS1/2)～DN50（NPS2）

Pressure：PN16～PN100、Class150～Class600

Connection：flange, thread, BW,SW

Air Pressure：0.4～0.6Mpa

Working Temperature： 100~320℃

Working medium: Saturated boiler water

Flow characteristic: Quick opening

Leakage level: V grade

Actuator model: MT1R + KS

Rated Cv

DN DN15 DN20 DN25 DN32 DN40 DN50
Rated Cv 12 12 12 22 22 22
Travelmm 10 10 10 10 10 10
Figure 2 Manual Blowdown Valve
Figure 2 Manual Blowdown Valve
Figure 1 Pneumatic Blowdown Valve
Figure 1 Pneumatic Blowdown Valve

 

NO. Name
1 Body
2 Seat
3 Wrapping pad
4 Core
5 Pressure cage
6 Guide cage
7 Sealing gasket
8 Cover
9 Bolt
10 Nut
11 Packing
12 Packing sleeve
13 Stem
14 Actuator
Body Bonnet Core Seat Stem Bolt/Nut
WCB
CF8		 WCB
CF8		 304+STL 304+STL 410/304 A193 B7/A194 2H
A193 B8/A194 8

(1)The operating temperature range of the body material corresponding to the pressure range（MPa）

Body Bonnet Core Seat Stem Bolt/Nut
WCB
CF8		 WCB
CF8		 304+STL 304+STL 410/304 A193 B7/A194 2H
A193 B8/A194 8
Temp°C Class150 Class300
A105
(WCB)		 LF2
(LCB)		 F11
(WC6)		 F304
(CF8)		 F316L
(CF3M)		 A105
(WCB)		 LF2
(LCB)		 F11
(WC6)		 F304
(CF8)		 F316L
(CF3M)
-196 ~ -47 – – – 1.90 1.90 – – – 4.96 4.96
-46 ~ -30 – 1.96 – 1.90 1.90 – 5.17 – 4.96 4.96
-29 ~ 38 1.96 1.96 1.98 1.90 1.90 5.11 5.17 5.17 4.96 4.96
50 1.92 1.92 1.95 1.83 1.84 5.01 5.17 5.17 4.78 4.81
100 1.77 1.77 1.77 1.57 1.62 4.66 5.15 5.15 4.09 4.22
150 1.58 1.58 1.58 1.42 1.48 4.51 4.97 4.97 3.7 3.85
200 1.38 1.38 1.38 1.32 1.37 4.38 4.80 4.80 3.45 3.57
250 1.21 1.21 1.21 1.21 1.21 4.19 4.63 4.63 3.25 3.34
300 1.02 1.02 1.02 1.02 1.02 3.98 4.29 4.29 3.09 3.16
350 0.84 0.84 0.84 0.84 0.84 3.76 4.03 4.03 2.96 3.03
375 0.74 – 0.74 0.74 0.74 3.64 – 3.89 2.9 2.99
400 0.65 – 0.65 0.65 0.65 3.47 – 3.65 2.84 2.94
Temp℃ Class600 PN16
A105
(WCB)		 LF2
(LCB)		 F11
(WC6)		 F304
(CF8)		 F316L
(CF3M)		 A105
(WCB)		 LF2
(LCB)		 F11
(WC6)		 F304
(CF8)		 F316L
(CF3M)
-196 ~ -47 – – – 9.93 9.93 – – – 1.57 1.57
-46 ~ -30 – 10.21 – 9.93 9.93 – 1.61 – 1.57 1.57
-29 ~ 38 10.21 10.21 10.34 9.93 9.93 1.61 1.61 1.63 1.57 1.57
50 10.02 10.02 10.34 9.56 9.62 1.58 1.58 1.63 1.51 1.52
100 9.32 9.32 10.3 8.17 8.44 1.46 1.46 1.63 1.29 1.33
150 9.02 9.02 9.95 7.4 7.7 1.43 1.43 1.57 1.17 1.22
200 8.76 8.76 9.59 6.9 7.13 1.38 1.38 1.51 1.09 1.13
250 8.39 8.39 9.27 6.5 6.68 1.32 1.32 1.46 1.03 1.05
300 7.96 7.96 8.57 6.18 6.32 1.22 1.22 1.35 0.97 1.00
350 7.51 7.51 8.04 5.93 6.07 1.17 1.17 1.27 0.93 0.96
375 7.27 – 7.76 5.81 5.98 1.15 – 1.23 0.92 0.94
400 6.94 – 7.33 5.69 5.89 1.09 – 1.15 0.90 0.93
Temp°C PN25 PN40
A105
(WCB)		 LF2
(LCB)		 F11
(WC6)		 F304
(CF8)		 F316L
(CF3M)		 A105
(WCB)		 LF2
(LCB)		 F11
(WC6)		 F304
(CF8)		 F316L
(CF3M)
-196 ~ -47 – – – 2.45 2.45 – – – 3.92 3.92
-46 ~ -30 – 2.55 – 2.45 2.45 – 4.03 – 3.92 3.92
-29 ~ 38 2.52 2.55 2.55 2.45 2.45 4.03 4.03 4.08 3.92 3.92
50 2.47 2.55 2.55 2.36 2.37 3.95 3.95 4.08 3.78 3.8
100 2.29 2.54 2.54 2.02 2.08 3.66 3.66 4.06 3.23 3.33
150 2.23 2.45 2.45 1.83 1.9 3.57 3.57 3.93 2.93 3.04
200 2.16 2.37 2.37 1.70 1.76 3.46 3.46 3.79 2.72 2.82
250 2.06 2.28 2.28 1.60 1.65 3.29 3.29 3.64 2.56 2.63
300 1.91 2.11 2.11 1.51 1.56 3.06 3.06 3.38 2.42 2.50
350 1.82 1.98 1.98 1.46 1.5 2.92 2.92 3.18 2.33 2.40
375 1.80 – 1.91 1.44 1.47 2.88 – 3.06 2.30 2.36
400 1.70 – 1.80 1.41 1.45 2.72 – 2.89 2.26 2.32
Temp°C PN63 PN100
A105
(WCB)		 LF2
(LCB)		 F11
(WC6)		 F304
(CF8)		 F316L
(CF3M)		 A105
(WCB)		 LF2
(LCB)		 F11
(WC6)		 F304
(CF8)		 F316L
(CF3M)
-196 ~ -47 – – – 6.17 6.17 – – – 9.8 9.8
-46 ~ -30 – 6.35 – 6.17 6.17 – 10.08 – 9.8 9.8
-29 ~ 38 6.35 6.35 6.43 6.17 6.17 10.08 10.08 10.21 9.8 9.8
50 6.22 6.22 6.43 5.95 5.98 9.88 9.88 10.21 9.44 9.5
100 5.77 5.77 6.4 5.08 5.25 9.15 9.15 10.16 8.07 8.33
150 5.62 5.62 6.19 4.62 4.79 8.92 8.92 9.82 7.34 7.6
200 5.45 5.45 5.96 4.29 4.43 8.65 8.65 9.47 6.81 7.04
250 5.19 5.19 5.74 4.04 4.15 8.23 8.23 9.11 6.41 6.59
300 4.81 4.81 5.33 3.81 3.93 7.64 7.64 8.46 6.05 6.24
350 4.59 4.59 5.00 3.67 3.79 7.29 7.29 7.94 5.83 6.01
375 4.53 – 4.82 3.63 3.72 7.2 – 7.66 5.76 5.90
400 4.29 – 4.55 3.56 3.66 6.81 – 7.22 5.64 5.81
Figure 4 Manual Blowdown Valve
Figure 4 Manual Blowdown Valve
Figure 3 Pneumatic Blowdown Valve
Figure 3 Pneumatic Blowdown Valve
DN Actuator L H1 H2 H3 W
PN16 PN25 PN40 PN63/PN100 Class150 Class300 Class600 Pneumatic Manual
DN15 MT1R+KS 130 130 130 – 130 130 – 75 140 280 180 180
DN20 MT1R+KS 150 150 150 – 184 194 – 75 140 280 180 180
DN25 MT1R+KS 160 160 160 – 184 197 – 75 140 280 180 180
DN32 MT1R+KS 180 180 180 – 180 222 – 90 130 280 180 180
DN40 MT1R+KS 200 200 200 – 222 235 – 90 130 280 180 180
DN50 MT1R+KS 230 230 230 – 254 267 – 105 130 280 180 180
DN20 MT2R+KS – – – 206 – – 206 75 140 380 280 270
DN25 MT2R+KS – – – 210 – – 210 75 140 380 280 270
DN32 MT2R+KS – – – 251 – – 251 90 160 380 280 270
DN40 MT2R+KS – – – 251 – – 251 90 160 380 280 270
DN50 MT2R+KS – – – 286 – – 286 105 160 380 280 270

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