Direct acting self-operated pressure control valve
Technical Parameter
Item model number: V231
Nominal diameter: DN20~250mm
Nominal pressure: PN1.6, 2.5, 4.0 MPa
Applicable temperature: liquid ≤ 140℃, gas ≤ 80℃
Main material: cast iron, cast steel, cast stainless steel
Flange standard: DIA (flange standard can also be provided according to user requirements)
Product overview
The direct-acting self-operated pressure regulating valve is composed of valve body, valve seat, valve core parts and other parts. It is an energy-saving product that does not require external energy but only relies on the pressure change of the medium to be adjusted itself to automatically adjust the pressure. Pressure control device for non-corrosive (maximum temperature 350°C) liquid, gas and steam media. It is widely used in petroleum, chemical, metallurgy, light industry and other industrial sectors as well as urban heating and heating systems.
Product model and specification
| Category | Pressure control valve | Differential pressure control valve | ||||||
| After the valve pressure regulating valve | Pre-valve pressure regulating valve | Differential pressure riser valve closed | Differential pressure riser valve opens | |||||
| Metal seat | Soft seal | Metal seat | Soft seal | Metal seat | Soft seal | Metal seat | Soft seal | |
| Model | V230 D01 | V230D01 | V230D02 | V231D02 | V230D03 | V231D03 | V230D04 | V231D04 |
| Size | DN15-250 | |||||||
The main technical parameters
| Nominal diameter mm | 15 | 20 | 25 | 32 | 40 | 50 | 65 | 80 | 100 | 125 | 150 | 200 | 250 | |
| Rated flow coefficient Kvs | 3.2 | 5 | 8 | 12.5 | 20 | 32 | 50 | 80 | 125 | 160 | 320 | 450 | 630 | |
| Nominal pressure MPa | 1.6、 4.0 | |||||||||||||
| 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 | |
| Maximum working temperature °C | V230 V231 | Liquid≤140, Gas≤80 | ||||||||||||
| Metal seat V230 | With isolation tank ≤ 200 | With isolation tank and extension ≤ 300 | ||||||||||||
| With isolation tank and heat sink ≤ 200 | ||||||||||||||
| Pressure balance element | Bellows | Rolling diaphragm | ||||||||||||
| Flange standard | DIA (Flange standard also available on request) | |||||||||||||
| Body Material | PN16: cast iron (working temperature ≤ 200 ℃); PN40: cast steel, cast stainless steel (working temperature ≤ 350 ℃) | |||||||||||||
| Spool Material | Stainless steel; soft seal is stainless steel inlaid rubber ring | |||||||||||||
| Maximum working pressure MPa | Nominal pressure (pay attention to △ Pmax and the relationship between working pressure and working temperature) | |||||||||||||
Note: 1. When liquid > 140 ℃, gas > 80 ℃, the valve is installed upside down 2. Z value: noise measurement coefficient, this value is used to measure the noise level. For details, please refer to the selection guide of self-operated control valve.
Main dimensions and weight
| Nominal diameter mm | 20 | 25 | 32 | 40 | 50 | 65 | 80 | 100 | 125 | 150 | 200 | 250 |
| L mm | 150 | 160 | 180 | 200 | 230 | 290 | 310 | 350 | 400 | 480 | 600 | 730 |
| B mm | 212 | 238 | 238 | 240 | 240 | 275 | 275 | 380 | 380 | 295 | 325 | 372 |
| Approx. weight kg | 6.7 | 9.7 | 13 | 14 | 17 | 29 | 33 | 60 | 70 | 80 | 140 | 220 |
Actuator size and weight
| Effective area cm 2 | 32 | 80 | 250 | 630 |
| D （mm） | 172 | 172 | 263 | 380 |
| H （mm） | 440 | 435 | 440 | 520 |
| Approx. weight kg | 7.5 | 7.5 | 13 | 28 |
Note: The total height and weight of the direct-acting self-operated valve are the sum of the height and weight of the control valve and the actuator.
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