Zhejiang Chengrui Valve Manufacturing Co., Ltd
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    Modao Industrial Zone, Oubei Town, Wenzhou, Zhejiang
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SZXP Pneumatic Thin Film Direct Single Seat Regulating Valve
Overview of SZXP Pneumatic Thin Film Direct Single Seat Regulating Valve:
Product details

Overview of SZXP Pneumatic Thin Film Direct Single Seat Regulating Valve:

The SZXP pneumatic thin film straight through single seat regulating valve adopts a top guide structure and is equipped with a multi spring actuator. It has the advantages of compact structure, light weight, sensitive action, S-shaped filling channel, low pressure drop loss, large valve capacity, precise flow characteristics, and easy disassembly and assembly. Widely used for precise control of gas, liquid and other media, process parameters such as pressure, flow rate, temperature, and liquid level are maintained at given values. Especially suitable for working environments where the pressure difference between the front and rear of the valve is not large and the leakage is allowed to be small.
There are various types of pneumatic thin film straight through single seat regulating valve products, including standard type, regulating cut-off type, corrugated pipe sealing type, jacket insulation type, etc. The nominal pressure rating of the product includes PN10, 16, 40, and 64; The valve body diameter range is DN20~200. Suitable for fluid temperatures ranging from -200 ℃ to 560 ℃ in various grades. The leakage standard has IV or VI level. The flow characteristics are linear or equal percentage. A variety of varieties and specifications are available for selection.

SZXP Pneumatic Thin Film Direct Single Seat Regulating Valve Main Component Materials

Valve body and valve cover: HT200,ZG230-450,ZG1Cr18Ni9Ti
Valve core and seat: 1Cr18Ni9Ti, welded with Stellite alloy
Soft seal valve core: reinforced polytetrafluoroethylene
Packing: polytetrafluoroethylene, flexible graphite
Bellows: 1Cr18Ni9Ti
Gasket: Rubber asbestos board, 10, 1Cr18Ni9Ti, asbestos wrapped gasket
Membrane cover: A3
Ripple film: Nitrile rubber clip reinforced polyester fabric
Valve stem and push rod: 2Cr13, 1Cr18Ni9Ti
Lining: 2Cr13

Main technical parameters of SZXP pneumatic thin film straight through single seat regulating valve

Nominal diameter DN (mm)

20

25

32

40

50

65

80

100

125

150

200

(10)

(12)

(15)

(20)

Rated flow coefficient KV

straight line

1.8

2.8

4.4

6.9

11

17.6

27.5

44

69

110

176

275

440

690

Equal percentage

1.6

2.5

4.0

6.3

10

16

25

40

63

100

160

250

400

630

Rated travel L (mm)

16

25

40

60

Effective area of membrane Ae (cm2)

280

400

600

1000

Signal range Pr (KPa)

20~100, 40~200

Gas source pressure Ps (MPa)

0.14~0.4

Inherent flow characteristics

Straight line, equal percentage

Inherent adjustable ratio

50

Allowable leakage amount

Hard seat: Class IV (rated capacity of 10-4 valves) Soft seat: Class VI

Nominal pressure PN (MPa)

1.0, 1.6, 4.0, 6.4

Working temperature t (℃)

Normal temperature type

-20-200- 40-240- 60~250

Heat dissipation type

-40-450- 60~450

High temperature type

450~560

Low temperature type

-60~-100, -100~-200, -200~-250

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