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.
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, while the ZXMQ 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. ZXMV type bellows sealed regulating valve forms a complete seal on the moving valve stem, blocking fluid leakage.
7. The ZXMJ 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 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
actuator
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.
(1) Before installation, check that the product model, tag number, and specifications match the requirements. Inspect the entire valve for missing or loose parts.
(2) Prior to installation, clean the pipeline. Ensure there is sufficient straight pipe section at the valve inlet and install a filter. When connecting the valve body to the pipeline flanges, ensure coaxiality.
(3) Thoroughly clean the pipeline before installing the valve.
(4) The installation site should ensure the safety of personnel and equipment, facilitating operation, disassembly, and maintenance.
(5) The valve should be installed vertically upright on horizontal pipelines. If necessary, it can be installed at an angle, but horizontal installation should be avoided. For occasions with heavy valve weight or vibration, use a support frame.
(6) The medium flow direction must align with the arrow on the valve body. The air supply should be dry and oil-free. The valve should be used in environments with temperatures ranging from -20℃ to 55℃.
(1) Cleaning the Valve: For general media, cleaning with water is sufficient. For media harmful to health, first understand their properties and then select an appropriate cleaning method.
(2) Disassembly: Remove rust from exposed rusted parts first. Before derusting, protect the machined surfaces of precision parts such as the valve seat, valve plug, valve stem, and push rod. Use special tools when disassembling the valve seat.
(3) Valve Seat: Minor rust or wear on the sealing surface can be repaired by machining. If damage is severe, replace the seat. However, both repaired and replaced hard sealing surfaces must be lapped.
(4) Valve Stem: If the surface is damaged, it must be replaced.
(5) Damage to Push Rod, Guide, and Sealing Surfaces: Reverse-acting actuators must be replaced; direct-acting actuators can be reused after proper repair.
(6) Compression Spring: If there are cracks or other defects affecting strength, replace it immediately.
(7) Wear Parts: Packing, gaskets, and O-rings must be replaced entirely during each maintenance. Check the valve plug and diaphragm for cracks, aging, or corrosion that may cause future failures. Decide whether to replace them based on inspection results, but the diaphragm service life should not exceed 2-3 years.
(8) When reassembling the valve, ensure alignment. Tighten bolts diagonally and lubricate sliding parts. After reassembly, debug the valve according to the factory test items and methods. During this period, accurately adjust the packing compression force and the valve plug closing position.
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If the model has not been selected before ordering, please provide us with the operating parameters:
(1) Nominal diameter DN (mm);
(2) Nominal pressure (MPa or bar);
(3) Fluid properties (including medium temperature, viscosity, or acidity/alkalinity);
(4) Pressure before and after the valve (pressure differential);
(5) Requirements for flow characteristics;
(6) Materials of valve body and valve core;
(7) Connection type;
(8) Driving method (provide air supply pressure, driving voltage);
(9) Supporting accessories (for pneumatic valves, it is recommended that users install an air filter triplet and a 2-position 5-way solenoid valve);
(10) On-site working conditions. -
If the product model of our company has been selected by the design unit, please order directly from our production department according to the model;
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When the application occasion is very important or the pipeline is relatively complex, please provide the design drawings and detailed parameters as much as possible, and our experts will review and check them for you.
