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Cage Type Pneumatic Double Seat Bellows Sealed Control Valves

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Cage Type Pneumatic Double Seat Bellows Sealed Control Valves

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Brand Name : WEYO

Model Number : HCBW

Place of Origin : China

MOQ : Negotiable

Price : Based on oroiect reauirements

Payment Terms : L/C, T/T

Supply Ability : 5000 units per month for small parts. 1000 units per month for large parts

Delivery Time : 7 - 15 days for small orders, 15 - 30 days for large orders

Packaging Details : Customized packaging to protect products

Type : Straight-through double-seat cast ball valve

Nominal Diameter : 40, 50, 65, 80, 100, 150, 200mm

Nominal Pressure : ANSI 150, 300, 600 JIS 10, 20, 30, 40K PN 1.6, 4.0, 6.4MPa

Operating Pressure : 1MPa, 2MPa, 3.5MPa

Connection Type : Flanged: RF, RJ Standards: ANSI B16.5, JIS B2201, JB/T79.1 (PN1.6MPa), JB/T79.2 (male and female face) Welded: Socket Weld (SW) (40～50mm) Butt Weld (BW) (65～200mm)

Materials : HT200, ZG25, ZG1Cr18Ni9, ZG0Cr17Ni12Mo2, 1.25Cr0.5Mo, 5.0Cr0.5Mo, or SCPH21, SCPH61, Ti

Upper Valve Bonnet : Normal temperature type (P): -17～+230℃ Extended type Ⅰ (E1): +230～+350℃; -45～-17℃ Note: The operating temperature shall not exceed the allowable range of each material.

Gland Type : Bolt compression type

Packing : V-type PTFE packing, PTFE-impregnated asbestos packing, asbestos braided packing

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HCBW Pneumatic Cage-Type Double-Seat Bellows Sealed Control Valve
HCBW bellows sealed cage-type double-seat control valve is a pressure-balanced control valve. It features a compact valve body structure with an S-shaped fluid channel, which results in small pressure drop loss, large flow rate, and a wide adjustable range. The upper valve bonnet adopts a bellows sealing structure, which can completely eliminate the possibility of process medium leaking out from the valve stem movement gap—this is one of the significant characteristics of bellows sealed valves. Due to the deformability and excellent anti-aging property of the bellows element itself, this type of control valve completely overcomes the common weaknesses of packing-sealed valves, such as packing aging and temperature difference sensitivity. Secondly, the adoption of a bellows-packing double sealing structure ensures better safety and reliability. Therefore, it is widely used in automatic control systems for rare and special media such as highly toxic, strongly corrosive, and radioactive substances.

The control valve is equipped with a multi-spring diaphragm actuator, which has a compact structure and large output force.
Cv value and stroke are shown in Table 1. Table 1

Nominal diameter

(mm)		 40 50 65 80 100 150 200

Valve seat diameter

(mm)		 25 32 40 32 40 50 40 50 65 50 65 80 65 80 100 100 125 150 125 150 200

Rated Cv value

High-precision, ordinary sleeve

 11 17 24 17 24 44 24 44 68 44 68 99 68 99 175 175 275 360 275 360 650

High-capacity sleeve

Equal percentage

 36 60 100 140 220 420 820

Linear

 40 75 110 150 240 435 850

Rated stroke

(mm)		 25 38 50 75
Remark: The flow characteristics of high-precision metal valve seats comply with IEC534-2.

Allowable pressure difference: See Tables 2-5

Ⅰ. Metal Valve Seat
A. Air-closed Valve Table 2

Actuator

Supply pressure

Spring range

Positioner

Allowable pressure difference

(MPa)

Nominal diameter

(mm)
40 50 65 80 100 150 200
HA2D 0.14 0.02-0.10

With or without

 0.5 0.38 0.33 0.27 0.21
0.16 0.02-0.10 With 2.0
24.6		 1.9 1.65 1.37 2.04
0.4 0.08-0.24 With 2.0
5.0		 2.0
5.0		 2.0
4.9		 2.0
4.1		 2.0
3.14
HA3D 0.14 0.02-0.10 With or without 0.85 0.7 0.6 0.5 0.37 0.26
0.16 0.02-0.10 With 2.0
4.35		 2.0
3.35		 2.0
2.9		 2.0
2.43		 1.85 1.3
0.4 0.08-0.24 With 2.0
5.0		 2.0
5.0		 2.0
5.0		 2.0
5.0		 2.0
5.0		 2.0
3.93
HA4D 0.14 0.02-0.10 With or without 1.01 0.83 0.64 0.45 0.37
0.16 0.02-0.10 With 2.0
.0		 2.0
4.2		 2.0
3.1		 2.0
2.25		 1.85
0.4 0.08-0.24 With 2.0
5.0		 2.0
5.0		 2.0
5.0		 2.0
5.0		 2.0
5.0

B. Air-to-open valve Table 3

Actuator

Supply pressure

(MPa)

Spring range

(MPa)

Positioner

Allowable pressure difference (MPa)

Nominal diameter (mm)
40 50 65 80 100 150 200
HA2R 0.14 0.02-0.1

With or without

 0.5 0.38 0.33 0.27 0.21
0.28 0.08-0.24 With 2
3.4		 2
2.7		 2
2.3		 1.92 1.45
HA3R 0.14 0.02-0.1 With or without 0.9 0.7 0.6 0.5 0.37 0.26
0.28 0.08-0.24 With 2
5		 2
4.8		 2
4.1		 2
3.4		 2
2.6		 1.83
HA4R 0.14 0.02-0.1 With or without 1.01 0.83 0.64 0.45 0.37
0.28 0.08-0.24 With 2
5		 2
5		 2
4.5		 2
3.15		 2
2.55

Ⅱ. Soft Valve Seat
A. Air-closed Valve Table 4
Actuator

Supply pressure

(MPa)

Spring range

(MPa)		 Positioner Allowable pressure difference (MPa)
Nominal diameter (mm)
40 50 65 80 100 150 200
HA2D 0.14 0.02-0.10 With or without 0.35 0.27 0.23 0.19 0.14
0.16 0.02-0.10 With 1.5 1.33 1.15 0.96 0.73
0.4 0.08-0.24 With 1.5 1.5 1.5 1.5 1.5
HA3D 0.14 0.02-0.10 With or without 0.61 0.48 0.41 0.34 0.26 0.18
0.16 0.02-0.10 With 1.5 1.5 1.5 1.5 1.3 0.9
0.4 0.08-0.24 With 1.5 1.5 1.5 1.5 1.5 1.5
HA4D 0.14 0.02-0.10 With or without 0.7 0.6 0.45 0.31 0.26
0.16 0.02-0.10 With 1.5 1.5 1.5 1.5 1.3
0.4 0.08-0.24 With 1.5 1.5 1.5 1.5 1.5

B. Air-to-open Valve Table 5
Actuator

Supply pressure

(MPa)

Spring range

(MPa)		 Positioner Allowable pressure difference (MPa)
Nominal diameter (mm)
40 50 65 80 100 150 200
HA2R 0.14 0.02-0.10 With or without 0.35 0.27 0.23 0.19 0.14
0.28 0.08-0.24 With 1.5 1.5 1.5 1.34 1
HA3R 0.14 0.02-0.10 With or without 0.51 0.48 0.41 0.68 0.52 0.36
0.28 0.08-0.24 With 1.5 1.5 1.5 1.5 1.5 1.3
HA4R 0.14 0.02-0.10 With or without 0.7 0.6 0.45 0.31 0.26
0.28 0.08-0.24 With 1.5 1.5 1.5 1.5 1.5

Flange distance: See Table 6
Table 6 Unit: mm
Nominal diameter A
ANSI150
JIS10K
PN1.6MPa
RF		 ANSI300
JIS2030K
RF
PN4.0MPa		 JIS20K
LG		 JIS30K
LG		 ANSI
150
RJ		 ANSI
300
RJ		 ANSI
300
LG		 ANSI
150
SW,BW		 ANSI
300
SW,BW
40 222 235 236 248 235 248 244 251 251
50 254 267 267 276 267 283 276 286 286
65 276 292 292 303 289 308 302 311 311
80 298 317 317 326 311 333 327 337 337
100 352 368 368 379 365 384 378 394 394
150 451 473 473 486 464 489 483 473 508
200 543 568 568 580 556 584 578 568 610


Product Tags:

Pneumatic Control Valves

      

Cage Type Control Valves

      

200mm cage type control valve

      
China Cage Type Pneumatic Double Seat Bellows Sealed Control Valves wholesale

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