Self-acting Flow Control Valve Product Overview
Our ZZLP/M self-operated flow control valve is a new type of regulating valve. Compared to manual regulating valves, its advantage is automatic adjustment. In contrast to electric regulating valves, it does not require external power. Application practice has proven that, when used correctly in closed-loop water circulation systems (such as hot water heating systems, air conditioning cooling systems), this valve can easily achieve system flow distribution; it can achieve dynamic balance of the system; it can greatly simplify system debugging; and it can stabilize the pump's operating state. Therefore, the self-operated flow control valve has a broad application prospect in heating and air conditioning engineering. The function of the self-operated flow control valve is to maintain a constant flow through the valve under the change of pressure difference between the valve's inlet and outlet, thereby maintaining a constant flow of the controlled objects in series with the valve (such as a loop, a user, a piece of equipment, etc., etc.). There are many names for the self-operated flow control valve, such as self-operated flow balance valve, fixed flow valve, self-balancing valve, dynamic flow balance valve, etc. Different types of self-operated flow control valves have different structures but similar working principles.
Self-actuated flow control valve Technical specifications
| Nominal Pipe Size DN | 15 | 20 | 25 | 32 | 40 | 50 | 65 | 80 | 100 | 125 | 150 | 200 | 250 |
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| Rated Flow Coefficient Kvs | 4 | 6.3 | 8 | 16 | 20 | 32 | 50 | 80 | 125 | 160 | 280 | 320 | 400 |
| Greater flow rate under effective pressure (m³/h) | 0.02MPa | 1.5 | 2.5 | 3.5 | 5.5 | 9.0 | 14 | 22 | 36 | 55 | 70 | 125 | 180 | 250 |
| 0.05 MPa | 2.5 | 3.5 | 5.5 | 9.0 | 12 | 22 | 36 | 55 | 85 | 110 | 180 | - | - |
| Noise Measurement Coefficient Z value | 0.6 | 0.6 | 0.6 | 0.55 | 0.55 | 0.5 | 0.5 | 0.45 | 0.4 | 0.35 | 0.3 | 0.2 | 0.2 |
| Permitted pressure difference | PN16 | 1.6 | 1.5 | 1.2 | 1.0 |
| PN40 | 2.0 |
| Valve cover style | Standard Type -17 to +450℃ |
| Bolted type cap | Bolt-tensioned |
| Sealed packing material | V-shaped polytetrafluoroethylene filler, impregnated polytetrafluoroethylene asbestos filler, asbestos textile filler, graphite filler |
| Valve core type | Single seat, sleeve type valve core |
| Flow Characteristics | Linear |
Self-contained Flow Control Valve Actuator Parameters
| Effective Area (cm²) | 250 | 630 |
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| Throttle Pressure Difference (MPa) | 0.02；0.05 |
| Permits a greater pressure difference (MPa) between the upper and lower membrane chambers. | 0.4 | 0.15 |
| Material | Film cover: Zinc-coated steel; Film sheet: Filled with EPDM or FKM fibers |
| Control pipes, fittings | Copper or steel pipes, 10x1; Compression fittings: R1/4" |
Self-acting flow control valve - Performance specifications
| Control Accuracy | ±5% |
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Permitted leakage amount
Under specified experimental conditions | Hard seal | 4 x 0.01% rated capacity |
| Soft-sealed | DN15～50 | DN65～125 | DN150～250 |
| 10 bubbles/min | 20 bubbles/min | 40 bubbles/min |
Self-contained flow control valve connection size diagram
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| ZZLP/M Self-Operated Flow Control Valve (外形连接尺寸) |
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Self-contained flow control valve - Connection size
| Nominal Bore mm | 15 | 20 | 25 | 32 | 40 | 50 | 65 | 80 | 100 | 125 | 150 | 200 | 250 |
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| L | 130 | 150 | 160 | 180 | 200 | 230 | 290 | 310 | 350 | 400 | 480 | 600 | 730 |
| H | 50 | 52.5 | 57.5 | 75 | 75 | 85.5 | 92.5 | 100 | 110 | 142.5 | 158 | 170 | 640 |
| H1 | 212 | 212 | 238 | 238 | 240 | 240 | 275 | 275 | 380 | 380 | 326 | 354 | 404 |
| H2 | - | - | - | - | - | - | - | - | - | - | 326 | 354 | 404 |
| H3 | - | - | - | - | - | - | - | - | - | - | 630 | 855 | 1205 |
| H4 | 150 |
| R | 263 |
Self-contained Flow Control Valve Product Selection
Body Parameters: Nominal Bore Size, Working Pressure, Process Medium, Application, Material of Body, etc.
Please provide as much detail as possible regarding the above technical specifications to facilitate our production and technical staff in accurately selecting the right model for you. Should you have any questions, feel free to call us, and we will do our utmost to provide you with excellent service!
Related Name: ZZLP/M Self-Operated Flow Control Valve
