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V8000 Series Control Valve

V8000 Series Control Valve

In the fields of heating, temperature control, refrigeration, and even the entire field of industrial fluid automation, GlOBE straight-Travel control valve is a common and indispensable fluid control component. The control valve achieves the regulation of steam and other fluids’ pressure, flow rate, temperature and fluid level, which mainly through changing the throttling area between the valve plug and valve seat.

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V8000 Series Control Valve

  • 2024 年 7 月 26 日

Description

1. Product Introduction

In the fields of heating, temperature control, refrigeration, and even the entire field of industrial fluid automation, GlOBE straight-Travel control valve is a common and indispensable fluid control component. The control valve achieves the regulation of steam and other fluids’ pressure, flow rate, temperature and fluid level, which mainly through changing the throttling area between the valve plug and valve seat. Common issues with regular GLOBE straight-Travel control valves include difficulty in disassembling and replacing valve seats, packing wear and leakage, poor regulating accuracy, weak sealing, especially in high temperature conditions where it is prone to stick, excessive vibration and noise, stem breakage or detachment, and large leakage, which cannot meet operational requirements, lead to emergency shutdowns in severe cases, resulting in substantial losses for users.

2. Product Advantages

The V8000 model solves the above problems well and owns the following features:
  • Good stability against high differential pressure
  • Long-lasting seals in high-temperature operations
  • High regulation precision with low leakage
  • Long service life of packing
  • Convenient and quick on-site valve maintenance
  • Fast response speed
VMV equipped with either pneumatic diaphragm actuator or electric actuator according to the user’s on-site energy.

3. Typical Application Scenarios

3.1 Control valve of steam pressure reducing and temperature reducing on steam pipelines.
V8000 Series Control Valve description1
3.2 Control valve of feed water, deaerator fluid level, steam pressure, steam overflow, and steam pressure reducing is used in conjunction with boiler.
3.3 Absorption tower in the NMP recovery system for control valve of fluid level, water-added temperature, NMP and water mixture outlet flow rate.
  V8000 Series Control Valve description3  

4.Technical Parameters

Nominal diameter DN15(NPS1/2)～DN500
Pressure rating PN16～PN420、Class150～Class2500
Operating voltage (electric actuator) 220VAC, 380VAC, 24VDC
Air supply pressure (pneumatic actuator) 0.4～0.6MPa
Operating temperature -45～588 ℃
Bonnet type Standard type (-17～300℃) Radiator fin type(-45℃～-17℃,＞300℃)
Packing V-type combination packing(≤200℃) Graphite combination packing(＞200℃)

5. Performance

Rated Cv value See table below
Flow characteristic Equal percentage, linear, quick opening
Regulating 50:1
Leakage level Level IV (metal hard seal) Level V (metal hard seal) Level VI (soft seal)
Hysteresis <1%
Dead zone <0.6%
Allowable differential pressure See table below

The V8000 model solves the above problems well and owns the following features:

  • Good stability against high differential pressure
  • Long-lasting seals in high-temperature operations
  • High regulation precision with low leakage
  • Long service life of packing
  • Convenient and quick on-site valve maintenance
  • Fast response speed

VMV equipped with either pneumatic diaphragm actuator or electric actuator according to the user’s on-site energy.

3.1 Control valve of steam pressure reducing and temperature reducing on steam pipelines.

V8000 Series Control Valve description1

3.2 Control valve of feed water, deaerator fluid level, steam pressure, steam overflow, and steam pressure reducing is used in conjunction with boiler.

3.3 Absorption tower in the NMP recovery system for control valve of fluid level, water-added temperature, NMP and water mixture outlet flow rate.

V8000 Series Control Valve description3

Nominal diameter DN15(NPS1/2)～DN500
Pressure rating PN16～PN420、Class150～Class2500
Operating voltage (electric actuator) 220VAC, 380VAC, 24VDC
Air supply pressure (pneumatic actuator) 0.4～0.6MPa
Operating temperature -45～588 ℃
Bonnet type Standard type (-17～300℃)
Radiator fin type(-45℃～-17℃,＞300℃)
Packing V-type combination packing(≤200℃)
Graphite combination packing(＞200℃)
Rated Cv value See table below
Flow characteristic Equal percentage, linear, quick opening
Regulating 50:1
Leakage level Level IV (metal hard seal)
Level V (metal hard seal)
Level VI (soft seal)
Hysteresis <1%
Dead zone <0.6%
Allowable differential pressure See table below
6.1 Single-seat control valve

V8000 Series Control Valve Structure And Characteris1

①. Valve stem double guided structure
Keeping the packing and valve stem coaxial at any times can prevent abnormal wear of the packing caused by eccentricity,greatly improving the service life of the packing.

②. Thread + pin connection structure
The valve plug and the valve stem is lightly connected by threads and pins, with no any relative movement gap, effectively prevent fatigue and fracture of the valve stem from relative swing of the valve plug and valve stem.

③. Up-pressure valve seat structure
By loosening the valve bonnet bolts, the internal components of the valve can be removed one by one, allowing for quick maintenance and components onsite, thus saving the user’s replacement of the valve seat and internal maintenance time.

④. Gasket quantitative compression structure
Prevent the gasket from being overly compressed to achieve durable sealing without external leakage.

⑤. Single seat sealing structure
Lower leakage and hard sealing can meet level V and above leakage requirements for a long time.

⑥. Elastic pressure cage compensation structure
Under high-temperature conditions, the pressure cage can absorb the axial displacement caused by high temperatures and convert it into radial elastic deformation, prevent the gasket or valve internal components from failing due to thermal stress deformation.

⑦. Valve plug double-guided structure
The valve plug operates smoothly, not prone to vibriaon and sticking, ensuring higher regulating precision.

⑧. Spring-loaded packing gland structure
Provide a continuous and stable compressive force for the packing, allowing the packing to automatically compensate for wear during use, achieving long-term stable sealing.

6.2 Balanced single-seat control valve

V8000 Series Control Valve Structure And Characteris2

①. Wear-resistant piston ring seal structure
The wear-resistant piston ring still has self-lubricating at temperatures above 200°C, making the valve not easy to stretch and block during the long period
regulating process, maintaining a seal grade above level IV .

②. Balanced single seat structure
Low thrust overcomes the large pressure difference, has better performance of
overcoming differential pressure.

③. Spherical valve plug structure
The throttling orifice is uniformly distributed on the valve plug, allowing the medium to flow smoothly and stably, thus achieving higher regulating precision.

6.3 Low noise control valve

V8000 Series Control Valve Structure And Characteris3

①. Low noise valve plug structure
This design reduces the flow speed of the medium, thus diminishing the erosion of the valve plug and seat caused by high flow speed, increasing its service life.
It also lowers noise, reducing environmental noise pollution.
Decreased vibrations, prevent damage to valve internal components from high-frequency vibrations, enhancing regulating precision and service life.

6.4 Multi-stage pressure reducing control valve

V8000 Series Control Valve Structure And Characteris4

①. Multi-stage pressure + reducing valve plug structure
Used in conditions with high differential pressure to reduce medium flow speed and minimize the erosion to the valve plug and seat that occurs at high speed, thereby prolonging the valve’s service life.
It also reduces noise, lessening noise pollution to the environment.
The structure also diminishes vibrations, preventing damage to valve internal components due to high-frequency vibrations and improving the precision of regulation as well as service life.

6.5 Pilot control Valve

 

V8000 Series Control Valve Structure And Characteris5

①. Pilot operated valve plug structure
Equipped with regulating and shutoff function, it has excellent sealing
performance under high temperature (>230 ℃) working conditions and can ensure long-term operation with sealing above level V.
The structure also diminishes vibrations, preventing damage to valve components due to highfrequency vibrations and improving the precision of regulation as well as service life.

7.1 Common valve trim materials
Body Seat Plug Stem Packing
JS1049 420+HT 420+HT 410 PTFE
WCB 304+STL 304+STL 630 Flexible graphite
LCB 304 304 XM-19
WC6 316L+STL 316L+STL 304
WC9 321+STL 321+STL 316L
CF8 304+RPTFE 304+RPTFE
CF3 316L+RPTFE 316L+RPTFE
CF8M F11+Q.STL F11+Q.STL
CF3M
7.2 Temperature and pressure corresponding ranges of valve body material(MPa)
Temp℃ Class150 Class300 Class600
WCB WC6 WC9 CF8 CF8M WCB WC6 WC9 CF8 CF8M WCB WC6 WC9 CF8 CF8M
-196~-30 – – – 1.90 1.90 – – – 4.96 4.96 – – – 9.93 9.93
-29~38 1.96 1.98 1.98 1.90 1.90 5.11 5.17 5.17 4.96 4.96 10.21 10.34 10.34 9.93 9.93
50 1.92 1.95 1.95 1.83 1.84 5.01 5.17 5.17 4.81 4.81 10.2 10.34 10.34 9.56 9.62
100 1.77 1.77 1.77 1.57 1.62 4.66 5.15 5.15 4.22 4.22 9.32 10.3 10.3 8.17 8.44
150 1.58 1.58 1.58 1.42 1.48 4.51 4.97 5.03 3.85 3.85 9.02 9.95 10.03 7.4 7.7
200 1.38 1.38 1.38 1.32 1.37 4.38 4.80 4.86 3.57 3.57 8.76 9.59 9.72 6.9 7.13
250 1.21 1.21 1.21 1.21 1.21 4.19 4.63 4.63 3.34 3.34 8.39 9.27 9.27 6.5 6.68
300 1.02 1.02 1.02 1.02 1.02 3.98 4.29 4.29 3.16 3.16 7.96 8.57 8.57 6.18 6.32
325 0.93 0.93 0.93 0.93 1.93 3.87 4.14 4.14 3.09 3.09 7.74 8.26 8.26 6.04 6.18
350 0.84 0.84 0.84 0.84 0.84 3.76 4.03 4.03 3.03 3.03 7.51 8.04 8.04 5.93 6.07
375 0.74 0.74 0.74 0.74 0.74 3.64 3.89 3.89 2.99 2.99 7.27 7.26 7.76 5.81 5.98
400 0.65 0.65 0.65 0.65 0.65 3.47 3.65 3.65 2.94 2.94 6.94 7.33 7.33 5.69 5.83
425 0.55 0.55 0.55 0.55 0.55 2.88 3.52 3.52 2.91 2.91 5.75 7.00 7.00 5.6 5.77
450 – 0.46 0.46 0.46 0.46 – 3.37 3.37 2.88 2.88 – 6.77 6.77 5.48 5.73
475 – 0.37 0.37 0.37 0.37 – 3.17 3.17 2.87 2.87 – 6.34 6.34 5.39 5.65
500 – 0.28 0.28 0.28 0.28 – 2.57 2.82 2.82 2.82 – 5.15 5.65 5.3 5.00
538 – 0.14 0.14 0.14 0.14 – 1.49 1.84 2.52 2.52 – 2.98 3.69 4.89 –
550 – – – – – – 1.27 1.56 – – – 2.54 3.13 – –
575 – – – – – – 0.88 1.05 – – – 1.76 2.11 – –
600 – – – – – – 0.61 0.69 – – – 1.22 1.38 – –
Temp℃ PN16 PN25 PN40
WCB WC6 WC9 CF8 CF8M WCB WC6 WC9 CF8 CF8M WCB WC6 WC9 CF8 CF8M
-196~-30 – – – 1.57 1.57 – – – 2.45 2.45 – – – 3.92 3.92
-29~38 1.61 1.63 1.63 1.57 1.57 2.52 2.55 2.55 2.45 2.45 4.03 4.08 4.08 3.92 3.92
50 1.58 1.63 1.63 1.51 1.52 2.47 2.55 2.55 2.36 2.37 3.95 4.08 4.08 3.78 3.8
100 1.46 1.63 1.63 1.29 1.33 2.29 2.54 2.54 2.02 2.08 3.66 4.06 4.07 3.23 3.33
150 1.43 1.57 1.58 1.17 1.22 2.23 2.45 2.48 1.83 1.9 3.57 3.93 3.96 2.93 3.04
200 1.38 1.51 1.54 1.09 1.13 2.16 2.37 2.41 1.70 1.76 3.46 3.79 3.85 2.72 2.82
250 1.32 1.46 1.46 1.03 1.05 2.06 2.28 2.29 1.60 1.65 3.29 3.64 3.66 2.56 2.63
300 1.22 1.35 1.35 0.97 1.00 1.91 2.11 2.11 1.51 1.56 3.06 3.38 3.38 2.42 2.50
350 1.17 1.27 1.27 0.93 0.96 1.82 1.98 1.98 1.46 1.5 2.92 3.18 3.18 2.33 2.40
375 1.15 1.23 1.23 0.92 0.94 1.80 1.91 1.91 1.44 1.47 2.88 3.06 3.06 2.30 2.36
400 1.09 1.15 1.15 0.90 0.93 1.70 1.80 1.80 1.41 1.45 2.72 2.89 2.89 2.26 2.32
425 0.91 1.11 1.11 0.88 0.92 1.42 1.73 1.73 1.37 1.44 2.27 2.77 2.77 2.20 2.30
450 – 1.07 1.07 0.86 0.91 – 1.67 1.67 1.35 1.42 – 2.67 2.67 2.16 2.28
475 – 1.00 1.00 0.85 0.91 – 1.56 1.56 1.33 1.41 – 2.50 2.50 2.13 2.26
500 – 0.80 0.88 0.84 0.86 – 1.24 1.37 1.31 1.35 – 1.99 2.19 2.09 2.16
525 – 0.57 0.68 0.76 0.80 – 0.90 1.07 1.19 1.25 – 1.43 1.71 1.90 2.00
550 – 0.40 0.49 0.69 0.76 – 0.63 0.76 1.07 1.18 – 1.00 1.21 1.72 1.89
575 – 0.28 0.33 0.63 – – 0.43 0.52 0.99 – – 0.69 0.83 1.58 –
600 – 0.19 0.22 0.53 – – 0.30 0.31 0.83 – – 0.48 0.51 1.32 –
Temp℃ PN63 PN100
WCB WC6 WC9 CF8 CF8M WCB WC6 WC9 CF8 CF8M
-196~-30 – – – 6.17 6.17 – – – 9.8 9.8
-29~38 6.35 6.43 6.43 6.17 6.17 10.08 10.21 10.21 9.8 9.8
50 6.22 6.43 6.43 5.95 5.98 9.88 10.21 10.21 9.44 9.5
100 5.77 6.4 6.41 5.08 5.25 9.15 10.16 10.17 8.07 8.33
150 5.62 6.19 6.24 4.62 4.79 8.92 9.82 9.9 7.34 7.6
200 5.45 5.96 6.06 4.29 4.43 8.65 9.47 9.63 6.81 7.04
250 5.19 5.74 5.76 4.04 4.15 8.23 9.11 9.14 6.41 6.59
300 4.81 5.33 5.33 3.81 39.3 7.64 8.46 8.16 6.05 6.24
350 4.59 5.00 5.00 3.67 3.79 7.29 7.94 7.94 5.83 6.01
375 4.53 4.82 4.82 3.63 3.72 7.2 7.66 7.66 5.76 5.90
7.3 The valve trim material corresponds to the temperature and pressure range

①Valve plug (valve seat) material: 420+HT
V8000 ①Valve plug (valve seat) material 420+HT

②Valve plug (valve seat) material F11+Q.STL

V8000 ②Valve plug (valve seat) material F11+Q.STL

③Valve plug (valve seat) material 304+STL 316L+STL

V8000 ③Valve plug (valve seat) material 304+STL 316L+STL

④Valve plug (valve seat) material 304 316L

V8000 ④Valve plug (valve seat) material 304 316L

⑤Valve plug material 304+RPTFE 316L+RPTFE

V8000 ⑤Valve plug material 304+RPTFE 316L+RPTFE

⑥Packing material PTFE

V8000 ⑥Packing material PTFE

⑦Packing material graphite

V8000 ⑦Packing material graphite

V8000 8.Typical Flow Characteristc Curve

Nominal diameter Travel Valve seat diameter code Rated CV
Linear Equal percentage Low noise correction linearity Low noise correction linearity equal percentage
– 16 6E 0.002 – – –
– 16 6D 0.005 – – –
– 16 6C 0.008 – – –
– 16 6B 0.01 – – –
– 16 6A 0.08 – – –
– 16 6 0.12 0.12 – –
– 16 7 0.23 0.23 – –
– 16 8 0.58 0.58 – –
– 16 10 1.2 1.2 – –
– 16 12 1.9 1.9 – –
– 16 14 2.9 2.9 – –
DN15 16 15 4.7 4.7 – –
– 16 18 7.4 7.4 – –
DN20 16 20 10 10 – –
DN25 16 25 14 14 7 6
DN32 20 32 24 24 14 9
DN40 20 40 30 30 22 17
DN50 20 50 48 45 41 31
DN65 30 65 74 74 61 41
DN80 30 80 117 117 99 63
DN100 30 100 187 187 135 99
DN125 60 125 320 287 261 171
DN150 60 150 456 433 342 243
DN200 60 200 749 678 567 401
DN250 100 250 1100 950 842 639
DN300 100 300 1600 1400 1224 945
DN350 130 350 2100 1900 1607 1283
DN400 130 400 2800 2600 2142 1755
Nominal diameter Actuator model PN 10MPa (metal seal level IV)
PTFE packing Graphite packing
Unbalanced single seat structure Balanced single seat structure Unbalanced single seat structure Balanced single seat structure
DN20 Mt1 4.3 – 1.9 –
DN25 MT1 3.6 – 1.6 –
DN32 MT1 1.9 6 0.9 2.2
DN40 MT1 1.3 6 0.7 2.2
DN50 MT1 0.8 6 0.4 2.2
DN65 MT2 1.2 8.7 1.1 5
DN80 MT2 0.8 8.7 0.7 6.5
DN100 MT2 0.5 6.8 0.4 5
DN125 MT3 0.7 10 0.2 9.2
DN150 MT3 0.5 9.8 – 7.7
DN200 MT3 – 6 – 4.6
DN250 MT4 – 7.2 – 5.6
DN300 Mt4 – 5.7 – 4.5

V8000 Series Control Valve Dimensions and Weight

11.1 Overall dimensions (mm)
Nominal diameter Actuator model L H1 H2 H3 ΦA
PN16 PN25 PN40 CLASS 150 CLASS 300 PN63 PN100 CLASS600 Standard type bonnet Radiator fin type bonnet Without handwheel With handwheel
DN15 MT1 160 160 160 160 194 206 75 130 285 300 450 180
DN20 MT1 160 160 160 160 194 206 75 130 285 300 450 180
DN25 MT1 160 160 160 160 197 210 75 130 285 300 450 180
DN32 MT1 180 180 180 180 222 251 90 140 290 300 450 180
DN40 MT1 200 200 200 200 235 251 90 140 290 300 450 180
DN50 MT1 230 230 230 230 267 286 105 180 330 300 450 180
DN65 MT2 290 290 290 290 292 311 115 196 346 398 651 270
DN80 MT2 310 310 310 310 318 337 120 196 346 398 651 270
DN100 MT2 350 350 350 350 368 394 145 221 371 398 651 270
DN125 MT3 400 400 400 400 425 457 189 260 460 681 890 400
DN150 MT3 480 480 480 480 473 508 189 260 460 681 890 400
DN200 MT3 600 600 600 600 568 610 239 292 492 681 890 400
DN250 MT4 673 708 708 673 708 752 305 357 607 1100 1700 590
DN300 MT4 737 775 775 737 775 819 335 394 644 1100 1700 590
11.2 Weight (kg)
Nominal Diameter Actuator model Weight
PN≤5MPa PN≤10MPa
Without handwheel With handwheel Without handwheel With handwheel
DN15 MT1 17 24 20 27
DN20 MT1 17 24 20 27
DN25 MT1 17 24 20 27
DN32 MT1 33 40 41 48
DN40 MT1 34 41 42 49
DN50 MT1 35 42 43 50
DN65 MT2 65 75 79 89
DN80 MT2 67 77 82 92
DN100 MT2 86 96 106 116
DN125 MT3 171 190 209 228
DN150 MT3 202 221 249 268
DN200 MT3 285 304 357 376
DN250 MT4 531 566 662 697
DN300 MT4 703 738 885 920

12.Valve Body Casting Material Comparison Table

ASTM DIN EN JIS
A216 WCB 1.0619 GS-C25 G5151 SCPH2
A536 60-40-80 Js1049 GGG40 G5502 FCD400-15
A352 LCB 1.1131 G17Mn5 G5152 SCPL1
A217 WC6 1.7357 G17CrMo5-5 G5151SCPH21
A217 WC9 1.7379 G17CrMo9-10 G5151 SCPH-32
A351 CF8 1.4308 GX5CrNi19-10 G5151SCS13A
A351 CF3 1.4309 GX2CrNi19-11 G5151SCS19A
A351 CF8M 1.4408 GX5CrNiMo19-11-2 G5151SCS14A
A351 CF3M 1.4409 GX2CrNiMo19-11-2 G5151SCS16A
A351 CF8C 1.4552 GX5CrNiNb19-11 G5151 SCS21

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