Product Description:
The ZXM series pneumatic thin film bellows sleeve 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 fluid 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 products in this series, including standard type, adjustable cutting 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.
Product features:
1. Top guided single seat regulating valve, compact structure, few components, easy to maintain.
2. The metal valve core is suitable for various working environments and meets the IV level leakage standard. The ZXPQ soft seal structure valve core meets the VI level leakage standard.
3. The valve body is designed according to the principles of fluid mechanics as a low flow resistance channel with equal cross-section, increasing the rated flow coefficient by 30%.
4. The adjustable range is large, with an inherent adjustable ratio of 50.
5. The actuator adopts a multi spring structure, reducing height by 30% and weight by 30%.
6. ZXPV type bellows sealed regulating valve forms a complete seal on the moving valve stem, blocking fluid leakage.
7. The ZXPJ type regulating valve is equipped with an insulation jacket, which is used in situations where the fluid is prone to crystallization and solidification after cooling, causing blockage.
Material of parts:
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
Spring: 60SIMN
Valve stem and push rod: 2Cr13, 1Cr18Ni9Ti
Lining: 2Cr13
Executing Agency
Type: Multi spring thin film actuator
ZP280B/K， ZP400B/K，ZP600B/K， ZP1000B/K
Valve function: positive action, negative action
Membrane material: Nitrile rubber clip reinforced polyester fabric
Spring range: 20-100KPa, 40-200KPa
80～240KPa
Gas supply pressure: 0.14-0.4MPa
Signal interface: Internal thread M16 × 1.5 (M10 × 1)
Environmental temperature:- 30℃～+70℃
Attachment (configured according to requirements)
Positioner, air filter pressure reducing valve, handwheel mechanism, limit switch, solenoid valve, valve position transmitter, relay, holding valve, others

Note 1) For ZXMW type sleeve bellows sealed regulating valve, the maximum allowable pressure difference is 1.0MPa. If the value in the table is less than 1.0MPa, it remains unchanged. If the value is greater than 1.0MPa, it is taken as 1.0MPa.

External dimensions and weight
Standard heat dissipation corrugated tube sealing type, external dimensions and weight

Note 1) The weight in the table is for standard models without accessories, and side mounted handwheels can also be installed.
2) The valve body flange and flange end face distance can be manufactured according to user specified standards, such as ANSI, JIS, DIN, etc.

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