Basic Info.
Connection
Flanged Diaphragm Valve
Material
Cast Steel/Cast Iron/Stainless Steel/Brass
Structure
Wedge Diaphragm Valve
Pressure
Ordinary Temperature
Flow Direction
Bidirectional
Function
Solenoid Valve, Electronic Type, Intelligent Type, Field Bus
Usage
Safety, Emptying, Drain, Temperature Control, Flow Control
Standard
DIN, GB, ANSI, BSW, JIS
Trademark
Qingjiang Valve
Transport Package
Wooden Case
Product Description
The structure of the diaphragm valve is different with general valve, is a new type of valve, is a special kind of block valves, its opening and closing is a diaphragm, made with soft materials within the valve body cavity with the valve cover cavity and drive components separated, is now widely used in various fields. The commonly used diaphragm valves are lined with a diaphragm valve, a fluoridated diaphragm valve, an unlined diaphragm valve, and a plastic diaphragm valve.
Diaphragm valves are fitted with a flexible diaphragm or composite diaphragm in the valve body and bonnet, and the closing part is a compression device connected to the diaphragm. The seat can be a weir or a pipe wall of a straight channel. The advantage of the diaphragm valve is that its control mechanism is separated from the dielectric pathway, which not only guarantees the purity of the working medium, but also prevents the possibility of working parts of the medium in the pipeline. In addition, the stem does not need to be sealed in any form unless used as a safety facility in the control of harmful media. Diaphragm valve, the work is only in contact with the medium diaphragm and the valve body, both can be used in a variety of different materials, so the valve can be ideal to control a variety of working medium, especially suitable for medium with chemical corrosive or suspended particles. Diaphragm valve working temperature is usually limited by the diaphragm and body lining material used, its working temperature range is about - 50 ~ 175 ºC. The diaphragm valve structure is simple and consists of body, diaphragm and valve head. The valve is easy to disassemble and repair quickly, and the diaphragm can be completed on site and in a short time.
Principle and composition:
Diaphragm valves are used to replace the valve core components with corrosion-resistant lining and to use diaphragm movement to adjust. The valve body material of diaphragm valve is cast iron, cast steel, or cast stainless steel, and lined with all kinds of corrosion resistant or abrasion resistant material, diaphragm material rubber and polytetrafluoroethylene. The lining diaphragm has strong corrosion resistance and is suitable for adjustment of strong corrosive medium such as strong acid and strong alkali.
The diaphragm valve has a simple structure, small fluid resistance, and other types of valves with the same size. No leakage can be used for high viscosity and the regulation of suspended particle medium. The diaphragm insulates the medium from the stem, so there is no filler medium. However, as a result of the limitation of the diaphragm and lining material, pressure resistance, low temperature resistance, generally applies only to 1.6 MPa nominal pressure and under 150 ºC.
The flow characteristics of the diaphragm valve are close to the fast opening feature, which is approximately linear before 60% of the trip, and the flow rate of 60% is not large. The diaphragm valves of pneumatic form can be equipped with feedback signals, limiters and locators to meet the needs of automatic control, program control or regulating flow. The feedback signal of the pneumatic diaphragm valve adopts the contactless sensing technology. The product adopts thin film type propulsion cylinder, which can replace piston cylinder, which eliminates the damage of piston ring and causes leakage, which can not promote the valve opening and closing. When the gas source failure, can operate handwheel to open the valve.
Structure classification:
The diaphragm valve can be divided into three types: house type, direct current, cut-off type, straight-through type, gate type and right Angle type. The form of connection is usually flange. The driving mode can be divided into three kinds: manual, electric and pneumatic. The aerodynamic drive is divided into three types: regular, closed and reciprocating.
Folded rectangular
Also known as the border type, is the most basic commonly used code name (G41). Its structure is shown in the following figure. As can be seen from the diagram, the valve body is lined. The diaphragm body lining is designed to perform its corrosion resistance better.
Folded roof type
This kind of diaphragm valve, fluid resistance is larger than the right Angle diaphragm valve, but the sealing area is large and the sealing performance is good, which can be used for the vacuum high pipe.
The fluid resistance of gate diaphragm valve is minimal, suitable for conveying sticky materials.
Straight through
The diaphragm material is commonly used in natural rubber, chloroprene rubber, butyl rubber, butyl rubber, isobutyl rubber, fluorinated rubber and polyfluorinated ethylene propylene plastic (F46).
The disadvantage of diaphragm valve is that it is not high pressure, usually within 6kgf/cm2 (0.6mpa). Temperature resistant performance is restricted by the diaphragm, generally can only 60 ~ 80 ºC, the highest (rubber fluoride) also does not exceed 180 ºC.
| NO. | PART | MATERIAL |
| 1 | BODY | Cast iron GG25/Ductile iron GGG40 |
| 2 | BODY LINED | NATURAL RUBBER |
| 3 | DIAPHRAGM | NATURAL RUBBER |
| 4 | VALVE CLACK | Ductile iron GGG40 |
| 5 | BONNET | Ductile iron GGG40 |
| 6 | STEM | STAINLESS STEEL |
| 7 | BUSH | PLASTIC |
| 8 | HANDWHEEL | Ductile iron GGG40 |
| 9 | PIN | CARBON STEEL |
| 10 | BOLT | STAINLESS STEEL |
| (DIN)VALVE |
| Dimension(mm) | Working pressure (/C) |
SizeDN (De) | D | D1 | d | H1 | H | T | L | Distance between two holes | Diameter of flange hole | Number of Flanges |
| 15(20) | 95.00 | 80.00 | 16.00 | 14.00 | 90.00 | 13.00 | 121.00 | 65.00 | 14.00 | 4 | 10 |
| 20(25) | 105.00 | 80.00 | 21.00 | 18.00 | 102.00 | 14.00 | 142.00 | 75.00 | 14.00 | 4 | 10 |
| 25(32) | 115.00 | 94.00 | 28.00 | 21.00 | 119.00 | 15.00 | 151.00 | 85.00 | 14.00 | 4 | 10 |
| 32(40) | 140.00 | 117.00 | 36.00 | 26.00 | 126.00 | 15.00 | 169.00 | 100.00 | 16.00 | 4 | 10 |
| 40(50) | 150.00 | 117.00 | 45.00 | 33.00 | 139.00 | 17.00 | 193.00 | 110.00 | 16.00 | 4 | 7 |
| 50(63) | 165.00 | 152.00 | 57.00 | 39.00 | 172.00 | 17.00 | 227.00 | 125.00 | 19.00 | 4 | 7 |
| 65(75) | 185.00 | 152.00 | 85.00 | 91.00 | 173.00 | 17.00 | 290.00 | 145.00 | 19.00 | 4 | 6 |
| 80(90) | 197.00 | 264.00 | 85.00 | 109.00 | 226.00 | 18.00 | 310.00 | 160.00 | 19.00 | 8 | 6 |
| 100(110) | 220.00 | 264.00 | 106.00 | 134.00 | 234.00 | 20.00 | 350.00 | 180.00 | 19.00 | 8 | 4 |
| De125 | 250.00 | 264.00 | 106.00 | 134.00 | 234.00 | 22.00 | 350.00 | 210.00 | 22.00 | 8 | 4 |
| 125(140) | 250.00 | 264.00 | 106.00 | 134.00 | 234.00 | 22.00 | 350.00 | 210.00 | 22.00 | 8 | 4 |
| 150(160) | 286.00 | 393.00 | 150.00 | 212.00 | 333.00 | 24.00 | 480.00 | 240.00 | 22.00 | 8 | 4 |
| (ASTM)VALVE |
| Dimension(mm) | Working pressure (/C) |
Size (") | D | D1 | d | H1 | H | T | L | Distance between two holes | Diameter of flange hole | Number of Flanges |
| 1/2" | 89.00 | 80.00 | 16.00 | 14.00 | 90.00 | 13.00 | 121.00 | 60.33 | 16.00 | 4 | 10 |
| 3/4" | 98.00 | 80.00 | 21.00 | 18.00 | 102.00 | 14.00 | 142.00 | 69.85 | 16.00 | 4 | 10 |
| 1" | 108.00 | 94.00 | 28.00 | 21.00 | 119.00 | 15.00 | 151.00 | 79.38 | 16.00 | 4 | 10 |
| 1-1/4" | 117.00 | 117.00 | 36.00 | 26.00 | 126.00 | 15.00 | 169.00 | 88.90 | 18.00 | 4 | 10 |
| 1-1/2" | 127.00 | 117.00 | 45.00 | 33.00 | 139.00 | 17.00 | 193.00 | 98.43 | 18.00 | 4 | 7 |
| 2" | 152.00 | 152.00 | 57.00 | 39.00 | 172.00 | 17.00 | 227.00 | 120.65 | 18.00 | 4 | 7 |
| 2-1/2" | 178.00 | 152.00 | 85.00 | 91.00 | 173.00 | 17.00 | 250.00 | 139.70 | 18.00 | 4 | 6 |
| 3" | 189.00 | 264.00 | 85.00 | 109.00 | 226.00 | 18.00 | 264.00 | 152.40 | 18.00 | 4 | 6 |
| 4" | 229.00 | 264.00 | 106.00 | 134.00 | 234.00 | 20.00 | 329.00 | 190.50 | 18.00 | 8 | 4 |
| 5" | 250.00 | 264.00 | 106.00 | 134.00 | 234.00 | 22.00 | 350.00 | 210.00 | 22.00 | 8 | 4 |
| 6" | 286.00 | 393.00 | 150.00 | 212.00 | 333.00 | 24.00 | 480.00 | 241.30 | 22.00 | 8 | 4 |
| (JIS)VALVE |
| Dimension(mm) | Working pressure (/C) |
SizeDN (De) | D | D1 | d | H1 | H | T | L | Distance between two holes | Diameter of flange hole | Number of Flanges |
| 15(20) | 95.00 | 80.00 | 15.00 | 14.00 | 90.00 | 15.00 | 125.00 | 70.00 | 15.00 | 4 | 10 |
| 20(25) | 100.00 | 80.00 | 20.00 | 18.00 | 102.00 | 15.00 | 145.00 | 75.00 | 15.00 | 4 | 10 |
| 25(32) | 125.00 | 94.00 | 25.00 | 21.00 | 119.00 | 15.00 | 151.00 | 90.00 | 19.00 | 4 | 10 |
| 32(40) | 135.00 | 117.00 | 30.00 | 26.00 | 126.00 | 16.00 | 170.00 | 100.00 | 19.00 | 4 | 10 |
| 40(50) | 140.00 | 117.00 | 40.00 | 33.00 | 139.00 | 17.00 | 193.00 | 105.00 | 19.00 | 4 | 7 |
| 50(63) | 155.00 | 152.00 | 50.00 | 39.00 | 172.00 | 21.00 | 235.00 | 120.00 | 19.00 | 4 | 7 |
| 65(75) | 175.00 | 152.00 | 63.00 | 91.00 | 173.00 | 23.00 | 262.00 | 140.00 | 19.00 | 4 | 6 |
| 80(90) | 185.00 | 264.00 | 80.00 | 109.00 | 226.00 | 23.50 | 275.00 | 150.00 | 19.00 | 8 | 6 |
| 100(110) | 210.00 | 264.00 | 100.00 | 134.00 | 234.00 | 23.50 | 336.00 | 175.00 | 19.00 | 8 | 4 |
| 125(140) | 250.00 | 264.00 | 125.00 | 134.00 | 234.00 | 25.50 | 357.00 | 210.00 | 23.00 | 8 | 4 |
| 150(160) | 280.00 | 393.00 | 140.00 | 212.00 | 333.00 | 27.50 | 488.00 | 240.00 | 23.00 | 8 | 4 |
| MATERIAL TABLE |
| No. | Parts | Quantity | Material |
| 01 | Body | 1 | PVC-U/PVC-C |
| 02 | Diaphragm | 1 | EPDM/FPM |
| 03 | Diaphragm water seal sleeve | 1 | PP+GF30% |
| 04 | Hex bolt | 1 | Stainless Steel |
| 05 | Hex nut | 1 | Stainless Steel |
| 06 | Disc insert | 1 | Brass(H62) |
| 07 | Hanndwheel lock block | 1 | PP |
| 08 | Indicator stem(both insert) | 1 | PP |
| 09 | Handwheel | 1 | PP+GF30% |
| 10 | Body nut | 1 | PP+GF30% |
| 11 | Stem | 1 | Stainless Steel304 |
| 12 | ø4 pins | 1 | Stainless Steel |
| 13 | Stem screw insert | 1 | Brass(H62) |
| 14 | Stem screw | 1 | PPS+GF40% |
| 15 | Disc | 1 | PP+GF30% |
| 16 | Body nut located gear | 1 | PP+GF30% |
| 17 | One piece flange | 2 | PVC-U/PVC-C |
| 18 | Transparent cover(DN 65-DN150) | 1 | PC |
| 19 | Handwheel(DN 65-DN150) | 1 | PVC-U/PVC-C |
| 20 | Flanged body | 1 | PVC-U/PVC-C |
| Packing Details |
| No | Description | Size | Pcs/ctn | Weight (g/pcs) | Length (cm) | Width (cm) | Height (cm) |
| 1 | Flanged diaphragm valve | DN15 | 24 | 339.35 | 45 | 32 | 42 |
| 2 | DN20 | 24 | 490.38 | 49 | 35 | 43 |
| 3 | DN25 | 16 | 698.83 | 53 | 38 | 38 |
| 4 | DN32 | 18 | 1020.14 | 61.5 | 45 | 39.5 |
| 5 | DN40 | 8 | 1611.17 | 45 | 33 | 46 |
| 6 | DN50 | 8 | 2431.22 | 53 | 37 | 51.5 |
| 7 | DN65 | 1 | 3828.66 | 37 | 34 | 33 |
| 8 | DN80 | 1 | 6296.62 | 44.5 | 33 | 34.5 |
| 9 | DN100 | 1 | 9149.47 | 48 | 41 | 35 |
| 10 | DN125 | 1 | 10427.67 | 48 | 41 | 35 |
| 11 | DN150 | 1 | 21961.28 | 70 | 50 | 46 |
| Certificates |
| M.L.S.E.PRC | Manufacture License of Special Equitment People's Republic of China |
| HPNMERC | High Polymer New Material Engineering Research Center |
| JPPSERC | Jiangsu Plastic Piping System Engineering Research Center |
| GB/T24001 / ISO14001:2004 | Certificate of Environment Management System |
| GB/T19001-2008 / ISO9001-2008 | Certificate of Approval Certificate |
| NPQTC | National Quality Supervision Testing Centre of Plastic Product |
| SGS | Society General de Surveillance |
| C.PQI&SI | Changzhou Product Quality Inspection & Supervision Institute |
| CMC | CERTIFICATION FOR MEASUREMENT CONTRACT |
| SI | Sanitary Inspection Report |
Our company introduction:
Shanghai Qingjiang Valve Manufacturing Co, . Ltd. Is located in Shanghai Fengxian Industrial Zone, is a commitment to scientific research, production, sales of professional valve manufacturer.
Company to an international metropolis -- Shanghai as the basis, make full use of regional advantages and industry, is committed to the introduction of international advanced management experience and technological innovation, and actively promote the enterprise comprehensive strength, and expand market share, formed with the gate valve, globe valve, ball valve, check valve, butterfly valve, hydraulic control valve, balance valve, relief valve, regulating valve and so on more than 60 series nearly 1000 varieties of products structure. Products nominal diameter is 1/4"-80" (DN6-2600mm) pressure 0.1MPa - 32.0MPa, temperature -196-595º C. Valve of the main materials are cast iron, ductile iron, carbon steel, alloy steel, stainless steel, copper and other materials, and according to the special needs of customers and manufacture of metal products. Widely used in construction, municipal, water supply and drainage, HVAC, fire, electricity, metallurgical, petrochemical, gas and other industries, and exported to the Middle East. Europe and the United States and Southeast Asia and other countries and regions. High quality wins the customer the consistent high praise and trust.
Address:
207A Block C No. 205, Tianhe District, Guangzhou
Business Type:
Manufacturer/Factory, Trading Company
Business Range:
Industrial Equipment & Components
Management System Certification:
ISO 9001, ISO 9000, ISO 14001, ISO 14000
Company Introduction:
Shanghai Qingjiang Valve Manufacturing Co, . Ltd. Is located in Shanghai Fengxian Industrial Zone, is a commitment to scientific research, production, sales of professional valve manufacturer.
The company has a technical department, production department, marketing department, quality department, financial department enterprise management agencies. Built to international advanced level of processing center, spraying line, CNC lathes, plasma welding, chemical composition analysis, mechanical property testing, hardness testing, spectral analysis, nondestructive testing, thickness testing equipment more than 320 Taiwan (sets) of sophisticated processing, testing equipment and improve the detection process, for the production of high quality valves products to provide a strong guarantee.
Company to an international metropolis -- Shanghai as the basis, make full use of regional advantages and industry, is committed to the introduction of international advanced management experience and technological innovation, and actively promote the enterprise comprehensive strength, and expand market share, formed with the gate valve, globe valve, ball valve, check valve, butterfly valve, hydraulic control valve, balance valve, relief valve, regulating valve and so on more than 60 series nearly 1000 varieties of products structure. Products nominal diameter is 1/4"-80" (DN6-2600mm) pressure 0.1MPa - 32.0MPa, temperature -196-595º C. Valve of the main materials are cast iron, ductile iron, carbon steel, alloy steel, stainless steel, copper and other materials, and according to the special needs of customers and manufacture of metal products. Widely used in construction, municipal, water supply and drainage, HVAC, fire, electricity, metallurgical, petrochemical, gas and other industries, and exported to the Middle East. Europe and the United States and Southeast Asia and other countries and regions. High quality wins the customer the consistent high praise and trust.
New century Qingjiang Valve will be the spirit of " forever we cherish human harmony with nature, for which we in the water industry continue to strive to "business philosophy, and actively expand the market both at home and abroad, and create new brilliance in the twenty-first Century!
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