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Control valve

Huijin Valve: a professional manufacturer of regulating valves.

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  • E-mail: sale@w8down.com
  • Sales Hotline: 0577-6731 8881/8882
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  • Headquarters Address: No. 8 Industrial Road, Dajia Industrial Zone, Oubei Town, Yongjia County, Wenzhou City, Zhejiang Province

ZJHPF46 Pneumatic film-lined PTFE single-seat regulating valve

ZJHPF46 Pneumatic film-lined PTFE single-seat regulating valve
Pneumatic membrane-lined PTFE single-seat control valve ZMJBP-16F46P is an execution unit in automatic control instruments. It consists of a pneumatic membrane actuator and a straight-through single-seat fluorine-plastic valve. Because the valve is in contact with the medium using high-pressure injection molding process, lined with corrosion-resistant and aging resistant polyfluoroethylene propylene (referred to as F46), and sealed with polytetrafluoroethylene bellows, the valve is widely used in chemical, petroleum , Metallurgy, medicine, electric power and other industries for acid, alkali strong corrosive media and toxic and volatile gas and liquid media process control.

Product Features
1. Corrosion resistance: The valve body, valve core, valve seat, and valve stem are all 316 stainless steel, which is resistant to acid, alkali and strong corrosion.
2. Good sealing performance: double sealed with polytetraethylene bellows and packing to ensure no leakage.
3. Small leakage: Because the valve core and valve seat are soft seals, the leakage is lower than the national level IV standard.
4. Light and small multi-spring actuator, small size, light weight and high adjustment accuracy.

Part materials
Body and bonnet: HT200, ZG230-450, ZG1Cr18Ni9Ti
Valve core and valve seat: 1Cr18Ni9Ti, Stellite alloy surfacing
Soft-sealed spool: reinforced Teflon
Bellows: 1Cr18Ni9Ti PTFE bellows
Filler: Rubber asbestos sheet, 10 '', 1Cr18Ni9Ti asbestos wound gasket
Membrane cover: A3
Corrugated diaphragm: Polyester fabric reinforced with nitrile rubber
Spring: 30SIMN
Valve stem and push rod: 2Cr13, 1Cr18Ni9Ti
Bushing: 2Cr13

Third, the technical parameters
Performance index: (Table 1)

project

Performance

Basic error%

≤ ± 8

Back difference%

≤8

dead zone%

≤6

Rated flow coefficient error

≤ ± 10% (± 15% when Kv≤5)

Leakage

≤0.01% valve rated capacity

Technical parameters: (Table 2)

Nominal diameter DN (mm)

G3 / 4 ''

20

25

32

40

50

65

80

100

150

Valve seat diameter DN (mm)

3

4

5

6

7

8

10

12

15

20

26

32

40

50

65

80

100

150

Rated flow coefficient KV

0.08

1.12

0.20

.032

0.50

0.80

1.2

2

3.2

5

8

12

20

32

50

70

100

240

Flow characteristics

straight line

Straight \ Equal Percent

Nominal pressure PN (Mpa)

1.01.6

Equipped with actuator

model

ZHA-22

ZHA-23

ZHA-34

ZHA-45

Effective area cm

200

280

400

630

1000

Working stroke mm

10

10

16

25

40

60

Spring range KPa

20-10040-200

Mode of action

Air-closed or air-opened

Operating temperature

-30 ~ 200 ℃

Inherent adjustable ratio R

30: 1

Allowable pressure difference of regulating valve: (see Table 3)
The output of the pneumatic single-seat valve as a standard configuration is constant. In order to achieve the ideal adjustment and closing, the pressure difference of the valve must be limited to a certain value. This product should be selected according to Table 3. When the pressure difference exceeds the allowable value, the spring pretension force can be adjusted, and the valve positioner or other actuators can be used to overcome the unbalanced force. However, when ordering, please contact our company and explain the specific conditions before ordering.
Allowable differential pressure: (Table 3)

Air supply pressure (MPa)

Spring range (MPa)

Nominal diameter (DN)

G3 / 4 ''

20

25

32

40

50

65

80

100

150

Seat diameter (DN

3-8

10

12

15

20

26

32

40

50

65

80

100

150

0.14

20 ~ 100

Allowable pressure difference △ P (MPa)

Note: flow-open flow state, p2 = 0 when closed
Material of main parts: (Table 4)

Part Name

material

Part Name

material

Valve body

ZG25 lined with F46 (FEP)

Bellows

F4 (PTFE)

Spool

2Cr13 lined with F46 (FEP)

Hastelloy, Monel

filler

F4 (PTFE)

Valve seat

2Cr13 lined with F46 (FEP)

Flexible graphite

Hastelloy, Monel

Note: For media containing impurities and particles, the valve core and valve seat can use Hastelloy.
Dimensions: (Table 5)

Nominal diameter DN (㎜)

3/4 ″

20

25

32

40

50

65

80

100

150

L

116

180

185

200

220

250

275

300

350

480

A

245

245

245

245

290

290

362

362

362

454

H

401

445

485

495

523

532

697

699

699

817

H1

50

65

70

80

71

88

102

140

170

190

weight

17

17

19

twenty one

28

31.5

54

64

80

120

Note: The flange standard conforms to JB78-59, JB79-59 standards. Other standards such as ANSI American standard can also be used.
Supporting accessories:
1. Various types of valve positioners, electrical converters, air filter regulators.
2. Handwheel mechanism.
3. Solenoid valve, proximity switch.

Fourth, the model establishment instructions

Z

J

H

P

16

C

G

K

Self-control valve

Implementing agency:

Multi-spring pneumatic film actuator

Valve structure type:

Nominal pressure:

Body material:

Temperature type:

Function type:

J: indicates small size

P: indicates a single seat

16: indicates 1.6 MPa

C: indicates carbon steel

G: Medium temperature type

Omitted at room temperature

K: indicates air-open type

N: two-seater

25: indicates 2.5MPa

P: stainless steel

B: Air-off type

M: sleeve valve

40: 4.0MPa

F46: indicates that the valve body is lined with fluorine

64: indicates 6.4 MPa

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