V230/V231D self operated pressure regulating valve
- sell：021-32051999
- sell：021-32050777
- fax：021-66099555
Details
- Product Introduction
- Service Promise
- Ordering Process
V230D/V231D self-acting pressure (differential pressure) regulating valve is composed of membrane (piston) actuator, valve body, valve seat, valve core, balance spring and other components. It is a kind of valve which can automatically adjust the pressure without external energy and only rely on the change of the pressure of the regulated medium itself. It is produced by introducing the controlled medium into the actuator according to the mechanical principle. The energy-saving products with constant or reduced pressure in front or behind the valve are suitable for the pressure control of non-corrosive liquids, gases, steam and other media. They are widely used in petroleum, chemical, metallurgical, light industry and urban heating and heating systems.
Product characteristics of self operated pressure (differential pressure) regulating valve
The greatest characteristic of self-operated pressure (differential pressure) regulating valve is that it can work in the place without electricity and gas, and the pressure setting value can be adjusted at will during operation.
This product has nominal pressure PN1.6, 2.5, 4.0; nominal diameter range 20 300 mm; service temperature 300 Various varieties available.
Type specification of self pressure (differential pressure) regulating valve
category | Pressure control valve | Differential pressure control valve | ||||||
Valve rear pressure regulating valve | Pressure regulating valve before valve | Differential pressure rising valve closing type | Differential pressure rising valve open type | |||||
Hard seal | Soft seal | Hard seal | Soft seal | Hard seal | Soft seal | Hard seal | Soft seal | |
Model | V230D01 | V231D01 | V230D02 | V231D02 | V230D03 | V231D03 | V230D04 | V231D04 |
Specifications | DN15~200 | |||||||
Material code | C(WCB) | P(304) | R(316) | |
main Spare parts | valve body | WCB(ZG230-450) | ZG1Cr18Ni9Ti(304) | ZG1Cr18Ni12Mo2Ti(316) |
Valve core and valve seat | 1Cr18Ni9Ti(304) | 1Cr18Ni9Ti(304) | 1Cr18Ni12Mo2Ti(316) | |
Stem | 1Cr18Ni9Ti | 1Cr18Ni9Ti | 1Cr18Ni12Mo2Ti | |
diaphragm | EPDM或FKM夹纤维 | |||
Membrane cover | A3钢镀锌 | |||
filler | 聚四氟乙烯,柔性石墨 | |||
Spring | 60Si2Mn | |||
Nominal pathDN(mm) | 20 | 25 | 32 | 40 | 50 | 65 | 80 | 100 | 125 | 150 | 200 | ||||
Rated discharge coefficientKv | 6.3 | 8 | 16 | 20 | 32 | 50 | 80 | 125 | 160 | 320 | 450 | ||||
Noise measurement coefficient Z value | 0.6 | 0.6 | 0.55 | 0.55 | 0.5 | 0.5 | 0.45 | 0.4 | 0.35 | 0.3 | 0.2 | ||||
Allowable pressure difference | 1.6(MPa) | 1.6 | 1.5 | 1.2 | 1.0 | ||||||||||
4.0(MPa) | 2.0 | 1.5 | 1.2 | 1.0 | |||||||||||
Nominal pressure(MPa) | 1.6 2.5 4.0 | ||||||||||||||
Adjustment precision(%) | ±5 | ||||||||||||||
working temperature(℃) | Liquid < 140; Gas < 80; Condenser < 200; Condenser and radiator < 350; Condenser and extension < 300; | ||||||||||||||
Applicable medium | Holding water, gas, steam, low viscosity medium | ||||||||||||||
Pressure balance element | corrugated pipe | Rolldiaphragm | |||||||||||||
Allowable leakage | Hard seal(L/h) | Less than 4 * 10-4 * valve rated capacity | |||||||||||||
Soft seal | 10Bubble/min | 20Bubble/min | 40Bubble/min | ||||||||||||
Maximum working pressureMPa | Relationship between Nominal pressure (delta Pmax and working pressure and working temperature) | ||||||||||||||
Model | V230D01(D03) V231D01(D03) | V230D02(D04) V231D02(D04) | ||||||
effective areacm2 | 32※ | 80※ | 250 | 630 | 32※ | 80※ | 250 | 630 |
Pressure setting rangeMPa | 0.3~1.2 | 0.1~0.6 | 0.015~0.15 | 0.005~0.035 | 0.3~1.1 | 0.1~0.5 | 0.015~0.12 | 0.005~0.035 |
0.8~1.6 | 0.05~0.3 | 0.01~0.07 | 1.0~1.6 | 0.05~0.25 | 0.01~0.06 | |||
Ensure minimum pressure difference for normal working pressure.△P MPa | ≥0.05 | ≥0.04 | ≥0.01 | ≥0.05 | ≥0.05 | ≥0.04 | ≥0.01 | ≥0.05 |
Allow maximum pressure difference between upper and lower membrane chambers.MPa | 2.0 | 1.25 | 0.4 | 0.15 | 2.0 | 1.25 | 0.4 | 0.15 |
Tripmm | 18 | 18 | 23 | 23 | 18 | 18 | 23 | 23 |
Control pipeline, connector | Copper tube or steel pipe 10 * 1; card sleeve joint R1/4 " | |||||||
Note: the pressure setting range is not applicable to DN150~200.
Self operated pressure (pressure difference) regulating valve structure
 1 | valve body | 2 | valve seat | 3 | Valve shaft | 4 | Valve cover | 5 | Membrane cover | 6 | diaphragm |
7 | Spring | 8 | Adjusting nut | 9 | Pressure tube | 10 | corrugated pipe | 11 | balancediaphragm | 12 | Filling valve |
Nominal pathDN(mm) | 15 | 20 | 25 | 32 | 40 | 50 | 65 | 80 | 100 | 125 | 150 | 200 |
L(mm) | 130 | 150 | 160 | 180 | 200 | 230 | 290 | 310 | 350 | 400 | 480 | 600 |
B(mm) | 212 | 212 | 238 | 238 | 240 | 240 | 275 | 275 | 380 | 380 | 295 | 325 |
effective areacm2 | 32 | 80 | 250 | 630 | |
ΦR(mm) | 172 | 172 | 263 | 380 | |
H | D01(D03) | 435 | 430 | 470 | 520 |
D02(D04) | 440 | 435 | 440 | 520 | |
The best quality, first-class service Qigao creates more value for you!
"Qigao Valve" expects to continuously improve service quality and strive for excellence. "Sincere service" is the eternal theme of "Qigao". "Qigao" strictly followsIS09001-2000 Quality system certification requirements, strict quality control, responsibility to people, to ensure the healthy operation of production, sales and service. Strengthen communication with users and provide quality products to our customers with perfection and perfect service. Hereby our factory makes the following commitments:
Product Standards：
Products in strict accordance with ChinaGB、HG Standard and USAPISuch as standard design, manufacturing, acceptance. The hardness of the sealing surface meets the requirements of the state and the width exceeds the national standard.
pre-sale service：
Product introduction, technical exchange, non-standard product design, troubleshooting。
Sale service：
A trustworthy contract guarantees timely delivery and keeps in touch with customers. For special or duplicate products, our factory arranges technicians to use and troubleshoot the products for users.
After sales service：
1、"Qigao" brand product quality period is from the factory12In the month, the implementation of the "three guarantees" service (return, replacement, warranty).
2、During the use of our products, our factory regularly organizes technical and quality inspection personnel to visit and consult users for feedback on product quality, usage status and improvement opinions, so as to further improve product quality.
3、Respond quickly to the quality of user complaints, after-sales service personnel rushed to the scene in 24-36 hours (48 hours outside the province).
4、For after-sales service, users are required to fill out the quality feedback information form after the service and make an appraisal opinion in order to improve the service quality of Qigao.
1、If the customer has special requirements for the product, the following instructions must be provided in the order contract.：
a、Structure length；
b、Connection Type；
c、Nominal diameter, full diameter, reduced diameter, pipe size;
d、Operating medium and temperature, pressure range；
e、Tests, inspection standards and other requirements
2、The factory can configure various types of driving devices according to customer's specific requirements.。
3、If the type and model of the valve are determined by the customer, the customer shall correctly state the meaning and requirements of the model and sign the contract under the condition that the supplier and the buyer understand each other.
4、For futures and order customers, please call us in advance to tell the required valve model, specification, quantity, delivery time and location, and timely transfer to the factory account according to the total 30% deposit or full payment. The rest of the payment is pending. Import before shipment to arrange delivery in time.
Order Process：
1、Customer purchase list fax to021-33872143，Or call us 021-33872141
2、Receive customer purchase list, provide valve model selection and quotation (price list)。
3、Specific agreement: delivery date, special requirements, etc.。
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1、If the customer has special requirements for the product, the following instructions must be provided in the order contract.：
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2、The factory can configure various types of driving devices according to customer's specific requirements.。
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3、If the type and model of the valve are determined by the customer, the customer shall correctly state the meaning and requirements of the model and sign the contract under the condition that the supplier and the buyer understand each other.
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4、For futures and order customers, please call us first to tell the required valve model, specifications, quantity, delivery time and location, and press the total30%The deposit or full payment will be remitted to our factory account in time.， The rest of the payment will be remitted before shipment to arrange delivery in time.。
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Sale service：
Trustworthy contract, guarantee timely delivery, keep in touch with customers at any time。
For special or duplicate products, our factory arranges technicians to use and troubleshoot the products for users.
After sales service：
1、"Qigao" product quality period is from the factory12Month, practice“Three packs”Service (return, replacement, warranty)。
2、During the use of our products, our factory regularly organizes technical and quality inspection personnel to visit and consult users for feedback on product quality, usage status and improvement opinions.，
In order to further improve product quality。
3、Respond quickly to the quality of user complaints, after-sales service personnel24-36Hours (outside the province48Hour) rushed to the scene。
4、For after-sales service, the user is required to fill out the quality feedback information form after the service and make an appraisal opinion in order to improve the service quality of “Qigao”.。
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