Model NO.: deca
Actuator: Electric
Seal Surface: Parallel Gate Valve
Thread Position of Valve Rod: Inside Gate Valve
Usage: Regulation, Safety, Flow Control
Standard: ANSI
Application: Industrial Usage
Trademark: DECRRD
Transport Package: Wooden Case
Specification: custom
Origin: China
HS Code: 8481803190
Model NO.: deca
Actuator: Electric
Seal Surface: Parallel Gate Valve
Thread Position of Valve Rod: Inside Gate Valve
Usage: Regulation, Safety, Flow Control
Standard: ANSI
Application: Industrial Usage
Trademark: DECRRD
Transport Package: Wooden Case
Specification: custom
Origin: China
HS Code: 8481803190
The Z42 model parallel double disc gate valve developed by our company is a new generation fast shut-off gate valve that is independently designed and successfully researched and developed after introducing and absorbing advanced technologies from abroad. The pneumatic parallel double disc gate valve has been identified as a High-tech Product in Zhejiang Province, and been granted many national patents (patent No.: ZL2010 1 0282929.5, ZL2010 1 0246138.1). The product has been checked to be up to standard by the inspection center designated by General Administration of Quality Supervision, Inspection and Quarantine of the Peopleˇs Republic of China. We have also been issued the manufacturing license of special equipment (pressure pipe parts) of the Peopleˇs Republic of China, and been fire-safe certified to API 6FA by TUV SUD.Replacing the traditional wedge disc with the parallel floating round disc sealing assembly, the parallel double disc gate valve exhibits its great superiority and greatly improves its sealing performance and prolongs its service life. Featured by fast opening and closing, labor saving, low vibration, safe operation and simple maintenance, it is very suitable for shut-off or discharging in transportation pipes of gas and liquid media, and shows its excellence especially in shut-off and remote automatic control in transportation pipes of gas and liquid media. With no leakage, it can meet the requirements of high temperature, high pressure, explosion-proof and anticorrosive service conditions. It is widely applied in such industries as petroleum, chemical industry, oil refining, light industry, metallurgy, electric power, etc. With successful application and excellent service over the years, it has won trust and comment from users.
1. Nominal pressure (MPa): 1.6, 2.0, 2.5, 4.0, 5.0, 6.3, 10.0, 11.0
2. Applicable temperature: low temperature type (-46~+345ºC), normal temperature type (-29~+250ºC), medium temperature type (-29~+425ºC), high temperature type (+425~+600ºC)
3. Applicable media: water, steam, gas, oil
4. Bonnet type: standard type (-20~+300ºC), high temperature (cooling fin) type (+300~+600ºC) low temperature (extension) type (-60~-20ºC)
5. Valve shut-off class: hard seal V class, soft seal VI class (Hard seal VI class is for special order.) conforming to GB/T4213 and ASME B16.104
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Standard |
Design and manufacture |
Length of the structure |
Flange size |
Pressure temperature rating |
Inspection and testing |
Leakage level |
National Standards With industry standards |
GB/T 12234 GB/T 19672Â Â Â Â Â Â Â Â |
GB/T12221 | JB/T 79 GB/T 9113 HG/T 20592~20635 SH 3406 |
GB/T 9124 GB/T 12224 |
JB/T 9092 GB/T 13927 |
GB/T4213 |
American Standard |
API 6D API 600 |
ASME B16.10 API 6D |
ASME B16.5 ASME B16.47 |
ASME B16.34 | API 598 API 6D |
ANSI/FCI 70-2 ASME B16.104 |
Nominal Pressure |
Nominal diameter |
Face-to-face dimensions |
Flange connection dimensions |
RFÂ Â Â Â Â Â Sealing surface |
Opening height |
(kg) Reference weight |
|||||
NPS | DN | L | D | K | n-L | C | d | f1 | H | ||
Class 150 |
11/2 | 40 | 165 | 125 | 98.4 | 4-16 | 15.9 | 73.0 | 2 | 630 | 42 |
2 | 50 | 178 | 150 | 120.7 | 4-18 | 17.5 | 92.1 | 2 | 640 | 45 | |
21/2 | 65 | 190 | 180 | 139.7 | 4-18 | 20.7 | 104.8 | 2 | 690 | 55 | |
3 | 80 | 203 | 190 | 152.4 | 4-18 | 22.3 | 127.0 | 2 | 750 | 68 | |
4 | 100 | 229 | 230 | 190.5 | 8-18 | 22.3 | 157.2 | 2 | 780 | 80 | |
5 | 125 | 254 | 255 | 215.9 | 8-22 | 22.3 | 185.7 | 2 | 850 | 110 | |
6 | 150 | 267 | 280 | 241.3 | 8-22 | 23.9 | 215.9 | 2 | 940 | 130 | |
8 | 200 | 292 | 345 | 298.5 | 8-22 | 27.0 | 269.9 | 2 | 1120 | 220 | |
10 | 250 | 330 | 405 | 362.0 | 12-26 | 28.6 | 323.8 | 2 | 1330 | 270 | |
12 | 300 | 356 | 485 | 431.8 | 12-26 | 30.2 | 381.0 | 2 | 1530 | 370 | |
14 | 350 | 381 | 535 | 476.3 | 12-30 | 33.4 | 412.8 | 2 | 1710 | 510 | |
16 | 400 | 406 | 595 | 539.8 | 16-30 | 35.0 | 469.9 | 2 | 1880 | 650 | |
18 | 450 | 432 | 635 | 577.9 | 16-33 | 38.1 | 533.4 | 2 | 2160 | 1150 | |
20 | 500 | 457 | 700 | 635.0 | 20-33 | 41.3 | 584.2 | 2 | 2360 | 1380 | |
24 | 600 | 508 | 815 | 749.3 | 20-36 | 46.1 | 692.2 | 2 | 2660 | 1520 | |
28 | 700 | 610 | 835 | 795.3 | 40-22 | 43.0 | 762 | 2 | 3350 | 2390 | |
32 | 800 | 660 | 940 | 900.1 | 48-22 | 44.6 | 864 | 2 | 3860 | 2890 | |
36 | 900 | 711 | 1055 | 1009.6 | 44-26 | 50.9 | 972 | 2 | 4280 | 3620 |
Nominal Pressure |
Nominal diameter |
Face-to-face dimensions |
Flange connection dimensions |
RFÂ Â Â Â Â Â Sealing surface |
Opening height |
(kg) Reference weight |
|||||
NPS | DN | L | D | K | n-L | C | d | f1 | H | ||
Class 300 |
11/2 | 40 | 190 | 155 | 114.3 | 4-22 | 19.1 | 73.0 | 2 | 640 | 45 |
2 | 50 | 216 | 165 | 127.0 | 8-18 | 20.7 | 92.1 | 2 | 650 | 50 | |
21/2 | 65 | 241 | 190 | 149.2 | 8-22 | 23.9 | 104.8 | 2 | 690 | 70 | |
3 | 80 | 283 | 210 | 168.3 | 8-22 | 27.0 | 127.0 | 2 | 750 | 80 | |
4 | 100 | 305 | 255 | 200.0 | 8-22 | 30.2 | 157.2 | 2 | 800 | 100 | |
5 | 125 | 381 | 280 | 235.0 | 8-22 | 33.4 | 185.7 | 2 | 910 | 180 | |
6 | 150 | 403 | 320 | 269.9 | 12-22 | 35.0 | 215.9 | 2 | 1000 | 210 | |
8 | 200 | 419 | 380 | 330.2 | 12-26 | 39.7 | 269.9 | 2 | 1160 | 250 | |
10 | 250 | 457 | 445 | 387.4 | 16-30 | 46.1 | 323.8 | 2 | 1350 | 420 | |
12 | 300 | 502 | 520 | 450.8 | 16-33 | 49.3 | 381.0 | 2 | 1620 | 590 | |
14 | 350 | 762 | 585 | 514.4 | 20-33 | 52.4 | 412.8 | 2 | 1820 | 870 | |
16 | 400 | 838 | 650 | 571.5 | 20-36 | 55.6 | 469.9 | 2 | 1930 | 1180 | |
18 | 450 | 914 | 710 | 628.6 | 24-36 | 58.8 | 533.4 | 2 | 2150 | 1380 | |
20 | 500 | 991 | 775 | 685.8 | 24-36 | 62.0 | 584.2 | 2 | 2350 | 1980 | |
24 | 600 | 1143 | 915 | 812.8 | 24-42 | 68.3 | 692.2 | 2 | 3060 | 2380 | |
28 | 700 | 1346 | 920 | 857.2 | 36-36 | 87.4 | 787 | 2 | 3400 | 3300 | |
32 | 800 | 1524 | 1055 | 977.9 | 32-42 | 101.6 | 902 | 2 | 4400 | 6400 | |
36 | 900 | 1727 | 1170 | 1089 | 32-45 | 101.6 | 1010 | 2 | -- | -- |
Nominal Pressure |
Nominal diameter |
Face-to-face dimensions  |
Flange connection dimensions |
RFÂ Â Â Â Â Â Sealing surface |
Opening height |
(kg) Reference weight |
||||||||
NPS | DN | L | D | K | n-L | C | RF | RJ | H | |||||
RF | RJ | d | f1 | P | E | |||||||||
Class 600 |
11/2 | 40 | 241 | 241 | 155 | 114.3 | 4-22 | 22.3 | 73.0 | 7 | 90.5 | 6.35 | 650 | 60 |
2 | 50 | 292 | 295 | 165 | 127.0 | 8-18 | 25.4 | 92.1 | 7 | 108 | 7.92 | 650 | 70 | |
21/2 | 65 | 330 | 333 | 190 | 149.2 | 8-22 | 28.6 | 104.8 | 7 | 127 | 7.92 | 710 | 95 | |
3 | 80 | 356 | 359 | 210 | 168.3 | 8-22 | 31.8 | 127.0 | 7 | 146 | 7.92 | 765 | 110 | |
4 | 100 | 432 | 435 | 275 | 215.9 | 8-26 | 38.1 | 157.2 | 7 | 175 | 7.92 | 820 | 180 | |
5 | 125 | 508 | 511 | 330 | 266.7 | 8-30 | 44.5 | 185.7 | 7 | 210 | 7.92 | 960 | 270 | |
6 | 150 | 559 | 562 | 355 | 292.1 | 12-30 | 47.7 | 215.9 | 7 | 241 | 7.92 | 1050 | 330 | |
8 | 200 | 660 | 664 | 420 | 349.2 | 12-33 | 55.6 | 269.9 | 7 | 302 | 7.92 | 1250 | 620 | |
10 | 250 | 787 | 791 | 510 | 431.8 | 16-36 | 63.5 | 323.8 | 7 | 356 | 7.92 | 1450 | 980 | |
12 | 300 | 838 | 841 | 560 | 489.0 | 20-36 | 66.7 | 381.0 | 7 | 413 | 7.92 | 1720 | 1360 | |
14 | 350 | 889 | 892 | 605 | 527.0 | 20-39 | 69.9 | 412.8 | 7 | 457 | 7.92 | 2040 | 1720 | |
16 | 400 | 991 | 994 | 685 | 603.2 | 20-42 | 76.2 | 469.9 | 7 | 508 | 7.92 | 2150 | 2150 | |
18 | 450 | 1092 | 1095 | 745 | 654.0 | 20-45 | 82.6 | 533.4 | 7 | 575 | 7.92 | 2320 | 2980 | |
20 | 500 | 1194 | 1200 | 815 | 723.9 | 24-45 | 88.9 | 584.2 | 7 | 635 | 9.52 | 2650 | 3400 | |
24 | 600 | 1397 | 1407 | 940 | 838.2 | 24-51 | 101.6 | 692.2 | 7 | 749 | 11.13 | 3150 | 4700 |



 The Z42 model parallel double disc gate valve developed by our company is a new generation fast shut-off gate valve that is independently designed and successfully researched and developed after introducing and absorbing advanced technologies from abroad. The pneumatic parallel double disc gate valve has been identified as a High-tech Product in Zhejiang Province, and been granted many national patents (patent No.: ZL2010 1 0282929.5, ZL2010 1 0246138.1). The product has been checked to be up to standard by the inspection center designated by General Administration of Quality Supervision, Inspection and Quarantine of the Peopleˇs Republic of China. We have also been issued the manufacturing license of special equipment (pressure pipe parts) of the Peopleˇs Republic of China, and been fire-safe certified to API 6FA by TUV SUD.
Replacing the traditional wedge disc with the parallel floating round disc sealing assembly, the parallel double disc gate valve exhibits its great superiority and greatly improves its sealing performance and prolongs its service life. Featured by fast opening and closing, labor saving, low vibration, safe operation and simple maintenance, it is very suitable for shut-off or discharging in transportation pipes of gas and liquid media, and shows its excellence especially in shut-off and remote automatic control in transportation pipes of gas and liquid media. With no leakage, it can meet the requirements of high temperature, high pressure, explosion-proof and anticorrosive service conditions. It is widely applied in such industries as petroleum, chemical industry, oil refining, light industry, metallurgy, electric power, etc. With successful application and excellent service over the years, it has won trust and comment from users.
1. Nominal pressure (MPa): 1.6, 2.0, 2.5, 4.0, 5.0, 6.3, 10.0, 11.0
2. Applicable temperature: low temperature type (-46~+345ºC), normal temperature type (-29~+250ºC), medium temperature type (-29~+425ºC), high temperature type (+425~+600ºC)
3. Applicable media: water, steam, gas, oil
4. Bonnet type: standard type (-20~+300ºC), high temperature (cooling fin) type (+300~+600ºC) low temperature (extension) type (-60~-20ºC)
5. Valve shut-off class: hard seal V class, soft seal VI class (Hard seal VI class is for special order.) conforming to GB/T4213 and ASME B16.104
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Standard |
Design and manufacture |
Length of the structure |
Flange size |
Pressure temperature rating |
Inspection and testing |
Leakage level |
National Standards With industry standards |
GB/T 12234 GB/T 19672Â Â Â Â Â Â Â Â |
GB/T12221 | JB/T 79 GB/T 9113 HG/T 20592~20635 SH 3406 |
GB/T 9124 GB/T 12224 |
JB/T 9092 GB/T 13927 |
GB/T4213 |
American Standard |
API 6D API 600 |
ASME B16.10 API 6D |
ASME B16.5 ASME B16.47 |
ASME B16.34 | API 598 API 6D |
ANSI/FCI 70-2 ASME B16.104 |
Nominal Pressure |
Nominal diameter |
Face-to-face dimensions |
Flange connection dimensions |
RFÂ Â Â Â Â Â Sealing surface |
Opening height |
(kg) Reference weight |
|||||
NPS | DN | L | D | K | n-L | C | d | f1 | H | ||
Class 150 |
11/2 | 40 | 165 | 125 | 98.4 | 4-16 | 15.9 | 73.0 | 2 | 630 | 42 |
2 | 50 | 178 | 150 | 120.7 | 4-18 | 17.5 | 92.1 | 2 | 640 | 45 | |
21/2 | 65 | 190 | 180 | 139.7 | 4-18 | 20.7 | 104.8 | 2 | 690 | 55 | |
3 | 80 | 203 | 190 | 152.4 | 4-18 | 22.3 | 127.0 | 2 | 750 | 68 | |
4 | 100 | 229 | 230 | 190.5 | 8-18 | 22.3 | 157.2 | 2 | 780 | 80 | |
5 | 125 | 254 | 255 | 215.9 | 8-22 | 22.3 | 185.7 | 2 | 850 | 110 | |
6 | 150 | 267 | 280 | 241.3 | 8-22 | 23.9 | 215.9 | 2 | 940 | 130 | |
8 | 200 | 292 | 345 | 298.5 | 8-22 | 27.0 | 269.9 | 2 | 1120 | 220 | |
10 | 250 | 330 | 405 | 362.0 | 12-26 | 28.6 | 323.8 | 2 | 1330 | 270 | |
12 | 300 | 356 | 485 | 431.8 | 12-26 | 30.2 | 381.0 | 2 | 1530 | 370 | |
14 | 350 | 381 | 535 | 476.3 | 12-30 | 33.4 | 412.8 | 2 | 1710 | 510 | |
16 | 400 | 406 | 595 | 539.8 | 16-30 | 35.0 | 469.9 | 2 | 1880 | 650 | |
18 | 450 | 432 | 635 | 577.9 | 16-33 | 38.1 | 533.4 | 2 | 2160 | 1150 | |
20 | 500 | 457 | 700 | 635.0 | 20-33 | 41.3 | 584.2 | 2 | 2360 | 1380 | |
24 | 600 | 508 | 815 | 749.3 | 20-36 | 46.1 | 692.2 | 2 | 2660 | 1520 | |
28 | 700 | 610 | 835 | 795.3 | 40-22 | 43.0 | 762 | 2 | 3350 | 2390 | |
32 | 800 | 660 | 940 | 900.1 | 48-22 | 44.6 | 864 | 2 | 3860 | 2890 | |
36 | 900 | 711 | 1055 | 1009.6 | 44-26 | 50.9 | 972 | 2 | 4280 | 3620 |
Nominal Pressure |
Nominal diameter |
Face-to-face dimensions |
Flange connection dimensions |
RFÂ Â Â Â Â Â Sealing surface |
Opening height |
(kg) Reference weight |
|||||
NPS | DN | L | D | K | n-L | C | d | f1 | H | ||
Class 300 |
11/2 | 40 | 190 | 155 | 114.3 | 4-22 | 19.1 | 73.0 | 2 | 640 | 45 |
2 | 50 | 216 | 165 | 127.0 | 8-18 | 20.7 | 92.1 | 2 | 650 | 50 | |
21/2 | 65 | 241 | 190 | 149.2 | 8-22 | 23.9 | 104.8 | 2 | 690 | 70 | |
3 | 80 | 283 | 210 | 168.3 | 8-22 | 27.0 | 127.0 | 2 | 750 | 80 | |
4 | 100 | 305 | 255 | 200.0 | 8-22 | 30.2 | 157.2 | 2 | 800 | 100 | |
5 | 125 | 381 | 280 | 235.0 | 8-22 | 33.4 | 185.7 | 2 | 910 | 180 | |
6 | 150 | 403 | 320 | 269.9 | 12-22 | 35.0 | 215.9 | 2 | 1000 | 210 | |
8 | 200 | 419 | 380 | 330.2 | 12-26 | 39.7 | 269.9 | 2 | 1160 | 250 | |
10 | 250 | 457 | 445 | 387.4 | 16-30 | 46.1 | 323.8 | 2 | 1350 | 420 | |
12 | 300 | 502 | 520 | 450.8 | 16-33 | 49.3 | 381.0 | 2 | 1620 | 590 | |
14 | 350 | 762 | 585 | 514.4 | 20-33 | 52.4 | 412.8 | 2 | 1820 | 870 | |
16 | 400 | 838 | 650 | 571.5 | 20-36 | 55.6 | 469.9 | 2 | 1930 | 1180 | |
18 | 450 | 914 | 710 | 628.6 | 24-36 | 58.8 | 533.4 | 2 | 2150 | 1380 | |
20 | 500 | 991 | 775 | 685.8 | 24-36 | 62.0 | 584.2 | 2 | 2350 | 1980 | |
24 | 600 | 1143 | 915 | 812.8 | 24-42 | 68.3 | 692.2 | 2 | 3060 | 2380 | |
28 | 700 | 1346 | 920 | 857.2 | 36-36 | 87.4 | 787 | 2 | 3400 | 3300 | |
32 | 800 | 1524 | 1055 | 977.9 | 32-42 | 101.6 | 902 | 2 | 4400 | 6400 | |
36 | 900 | 1727 | 1170 | 1089 | 32-45 | 101.6 | 1010 | 2 | -- | -- |
Nominal Pressure |
Nominal diameter |
Face-to-face dimensions  |
Flange connection dimensions |
RFÂ Â Â Â Â Â Sealing surface |
Opening height |
(kg) Reference weight |
||||||||
NPS | DN | L | D | K | n-L | C | RF | RJ | H | |||||
RF | RJ | d | f1 | P | E | |||||||||
Class 600 |
11/2 | 40 | 241 | 241 | 155 | 114.3 | 4-22 | 22.3 | 73.0 | 7 | 90.5 | 6.35 | 650 | 60 |
2 | 50 | 292 | 295 | 165 | 127.0 | 8-18 | 25.4 | 92.1 | 7 | 108 | 7.92 | 650 | 70 | |
21/2 | 65 | 330 | 333 | 190 | 149.2 | 8-22 | 28.6 | 104.8 | 7 | 127 | 7.92 | 710 | 95 | |
3 | 80 | 356 | 359 | 210 | 168.3 | 8-22 | 31.8 | 127.0 | 7 | 146 | 7.92 | 765 | 110 | |
4 | 100 | 432 | 435 | 275 | 215.9 | 8-26 | 38.1 | 157.2 | 7 | 175 | 7.92 | 820 | 180 | |
5 | 125 | 508 | 511 | 330 | 266.7 | 8-30 | 44.5 | 185.7 | 7 | 210 | 7.92 | 960 | 270 | |
6 | 150 | 559 | 562 | 355 | 292.1 | 12-30 | 47.7 | 215.9 | 7 | 241 | 7.92 | 1050 | 330 | |
8 | 200 | 660 | 664 | 420 | 349.2 | 12-33 | 55.6 | 269.9 | 7 | 302 | 7.92 | 1250 | 620 | |
10 | 250 | 787 | 791 | 510 | 431.8 | 16-36 | 63.5 | 323.8 | 7 | 356 | 7.92 | 1450 | 980 | |
12 | 300 | 838 | 841 | 560 | 489.0 | 20-36 | 66.7 | 381.0 | 7 | 413 | 7.92 | 1720 | 1360 | |
14 | 350 | 889 | 892 | 605 | 527.0 | 20-39 | 69.9 | 412.8 | 7 | 457 | 7.92 | 2040 | 1720 | |
16 | 400 | 991 | 994 | 685 | 603.2 | 20-42 | 76.2 | 469.9 | 7 | 508 | 7.92 | 2150 | 2150 | |
18 | 450 | 1092 | 1095 | 745 | 654.0 | 20-45 | 82.6 | 533.4 | 7 | 575 | 7.92 | 2320 | 2980 | |
20 | 500 | 1194 | 1200 | 815 | 723.9 | 24-45 | 88.9 | 584.2 | 7 | 635 | 9.52 | 2650 | 3400 | |
24 | 600 | 1397 | 1407 | 940 | 838.2 | 24-51 | 101.6 | 692.2 | 7 | 749 | 11.13 | 3150 | 4700 |



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