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ZJHP fine small high temperature steam cast steel pneumatic film single seat control valve with valve positioner DN502 inch

price:USD$30380.00
discount 70% in 2018-09-22 to 2018-09-24
price: USD$ 21266.00
freight :USD$18.00,(Express)
freight :USD$7.00,(Postal parcel)
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Pneumatic fine film control valve is divided into: SZJHP pneumatic precision small film single seat control valve, SZJHM pneumatic fine film sleeve control valve.SZJHN pneumatic fine small film two seat control valve, with top guide structure, equipped with multi spring actuator. The utility model has the advantages of compact structure, light weight, sensitive action, fluid channel S streamline, small pressure drop loss, large valve capacity, accurate flow characteristics, convenient disassembly and assembly, etc.. It is widely used in the accurate control of gas, liquid and other media process parameters such as pressure, flow, liquid level maintained at a given value. It is especially suitable for the occasions where the leakage is small and the pressure difference between the front and rear valves is small.

 Pneumatic fine film control valve products have standard type, cut off type, bellows seal type, jacket insulation type and many other varieties. Nominal pressure levels of products are PN16, 40, 64; nominal diameter range DN20 ~ 300. Applicable liquid temperature ranges from -200 to +560 centigrade. The leakage standard has grade IV or grade VI, and the flow characteristic is linear or equal
Percentage。 A variety of character specifications to choose from.

 

 

Material of main parts;

Valve body, valve cover: HT200, ZG230 - 450, ZG1Cr18Ni9Ti
Valve core and valve seat: 1Cr18Ni9Ti, Ti Ti alloy surfacing
Soft sealing spool: Reinforced PTFE
Packing: PTFE, flexible graphite, stainless steel bellows
Gasket: Rubber asbestos sheet, 1Cr18Ni9Ti, asbestos winding gasket
Membrane cover: A3
Corrugated diaphragm: NBR reinforced polyester fabric
Spring: 60Si2Mn
Valve stem, push rod: 2Cr13, 1Cr18Ni9Ti
Bushing: 2Cr13

 

 

Main technical parameters:

Nominal diameter DN (mm)
(spool diameter DN)
20253240506580100125150200250300
(10)(12)(15)(20)
Rated flow coefficient Kvstraight line1.82.84.46.91117.627.5446911017627544069011001760
Equal percentage1.62.54.06.3101625406310016025040063010001600
Rated travel (mm)1016254060100
The effective area of diaphragm is Ae (CM228040060010001600
The signal range is Pr (KPa)20~100、40~200
Gas pressure Ps (KPa)0.14~0.4
Inherent flow characteristicsStraight line, equal percentage
Intrinsic adjustable ratio R50:1
Allowable leakageHard valve seat: level IV, soft seat: grade VI
Nominal pressure PN (MPa)1.6、4.0、6.4
Operating temperature T
(℃)
Room temperature type-20~200、-40~250、-60~250
Heat dissipation type-40~450、-60~450
High temperature type450~560
Low temperature type-60~-100、-100~-200、-200~-250

 

 

Main technical parameters of the actuator:

Model

ZHA(B)-1

ZHA(B)-2

ZHA(B)-3

ZHA(B)-4

ZHA(B)-5

ZHA(B)-6

Effective area cm2

200

280

400

630

1000

1600

Travel mm

10

16

25

40

60

1000

Spring range KPa

20~100 (standard); 40~200; 80~240; 20~60; 60~100

Allowable pressure difference:

Gas supply pressure
MPa

Spring pressure
KPa

Nominal diameter

20

20

20

20

25

32

40

50

65

80

100

125

150

200

250

300

Seat diameter

10

12

15

20

25

32

40

50

65

80

100

125

150

200

250

300

0.14

20-100

Allowable pressure difference MPa

5.3

3.7

2.3

1.3

0.8

0.5

0.5

0.3

0.25

0.2

0.12

0.12

0.08

0.05

0.05

0.035

0.24

40-200

6.4

6.4

5.5

3.1

1.8

1.2

1.1

0.7

0.65

0.45

0.18

0.18

0.10

0.10

0.10

0.07

 

 

Temperature range of material for main parts:

Part name

Material Science

temperature range

valve body
Top valve cover

HT200

-20~200℃

ZG230-450

-40~450℃

ZG1Cr18Ni9Ti

-250~550℃

Valve core, valve seat and valve stem

1Cr18Ni9

-250~550℃

Upper and lower diaphragm

A3 steel plate


Stent and tectum

HT200


Compression spring

60Si2Mn


Corrugated film

5806 glue clip 480D nylon 66 mesh fabric


filler

Teflon

-40~200℃

carbon fibre

-120~350℃

Flexible graphite

-40~600℃

Outline size

DN

D

PN(MPa)

H

H1

 

1.6

4.0

6.4

Room temperature type

Medium temperature type

25

280

185

190

200

685

835

115

32

280

200

210

210

696

847

120

40

325

220

230

235

754

905

130

50

325

250

255

265

784

935

145

65

410

275

285

295

1065

1219

180

80

410

300

310

320

1076

1239

195

100

410

350

355

370

1085

1248

200

125

495

410

425

440

1286

1498

245

150

495

450

460

475

1306

1518

255

200

495

550

560

570

1381

1593

275

250

620

670

740

752

1455

1645

380

300

620

770

803

819

1510

1690

430

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