Overview of ZMAN Pneumatic Thin Film Double Seat Regulating Valve
ZMAN series pneumatic thin film double seat regulating valveAdopting a dual directional structure and equipped with multiple spring actuators. It has the advantages of compact structure, light inlet, sensitive action, small pressure drop, large allowable pressure difference, large valve capacity, accurate flow characteristics, and easy maintenance, and can be used under harsh working conditions. Especially suitable for work environments where there is a large pressure difference between the front and rear of the valve and leakage requirements are essential. This series of products includes various types such as standard type, regulating shut-off valve, 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 DN20~300. The applicable fluid temperature ranges from -196 ℃ to+560 ℃ in various grades. The leakage star standard has IV or VI level. The flow characteristics are linear or equal percentage. A variety of varieties and specifications are available for selection.

Pneumatic filmtwo-seaterCommon materials for main components of regulating valves

Pneumatic filmtwo-seaterMain technical parameters of regulating valves

Pneumatic diaphragm double seat regulating valveMain performance indicators

Note: The performance of this product complies with GB/T4213-2008

Gas closed (positive action) metal sealed type allowable differential pressure gauge Unit: MPa

Pneumatic diaphragm double seat regulating valveAir opening (reactive) metal seal type allowable differential pressure gauge Unit: MPa

Note on allowable differential pressure gauge:
1. The packing material is PTFE
2. The flow direction of the medium is opposite to the direction in which the valve core closes
3. The leakage level of metal sealed type is IV level
4. Values are limited by nominal pressure, pressure, and temperature
5. When the sealing type P2 of the corrugated pipe is ≠ 0, it needs to be rechecked;

Pneumatic diaphragm double seat regulating valveDimensions and weight unit: mm

When ordering a pneumatic diaphragm double seat regulating valve, please fill out the "Specification Book" or indicate the following content:
1、 If the model has not been selected before placing the order, please provide us with your usage parameters
1. Nominal diameter and rated current coefficient Kv
2. Fluid properties (including nominal pressure, temperature, viscosity, or acidity/alkalinity)
3. Valve action form (gas closed or gas open)
4. Flow characteristics
5. Pressure before and after the valve
6. Valve body, wide core material
7. Input signal
8. Do you have any attachments? Please specify the attachment model so that we can make the correct selection for you.

2、 Special requirements
1. Special Inspection
2. Complete oil and water removal treatment;
3. Copper prohibition treatment;
4. Special interfaces and piping;
5. Used under vacuum conditions;
6. Specify coating color
7. Special media (gas, chlorine, nitrogen)
8. Use stainless steel connectors;

3、 If the design unit has already selected our company's product model, please place an order directly with our sales department based on the model
4、 When the application is very important or the pipeline is complex, please provide design drawings and detailed parameters, and our experts will review and control them for you.