ASTM A351 gr CN7M Alloy 20 Valves are made up of an austenitic stainless steel grade that is often used as equivalent to Monel 400 grade in making valves. The material has 19% chromium minimum with cobalt, carbon, copper, manganese, molybdenum, 32% nickel phosphorus, sulfur, silicon and tantalum in the composition. The astm a351 cn7m butterfly valves are type of gate valves with butterfly shaped gates made in this grade of material. It is corrosion resistant to acids. The material is also specifically corrosion resistant to up to 40% concentrated boiling sulfuric acid. For this reason, the valves are used in acid production plants. The a351 gr. cn7m flanged ball valves have a ball for the regulation of the liquid flow with flanged ends.
Alloy 20 Valves
ASTM A351 gr CN7M Ball Valve
UNS N08020 Check Valve
The flanged ends connect face to face with flanged pipe ends. The dimensions vary and the sizes of the valves range from ½ inches to 48 inches. The material also has good fabricability to make valves. The a351 gr cn7m plug valves use a plug inside the valve body to regulate the liquid flow.
The plug can be made of the same material or a different material depending on the application requirements. The asme sa351 cn7m check valves are used to regulate the flow in one direction. The check valves and others are used in chemical and allied industries, pharmaceutical processing industries, food and dying industries, pickling racks, tanks and other severe environments.
Material | Alloy 20 |
---|---|
Seal Material | PTFE/ RPTFE |
Working Pressure | 1.6 – 6.4Mpa |
Working Temperature |
-29°C — +180°C |
Availabe Size | 1/2″-4″,(DN15-DN100) |
Available Connection | BSP/ BSPT/ NPT/ Flanged/ Welded |
Nominal Pressure | P10/PN16 |
Operation | Manual,Pneumatic, Electric |
Suitable Medium | Water,Sewage,Seawater,Gas,Food,Oils,etc |
Standards | GB9112,DIN2501,BS4504,ISO2084,ANSI125 |
Applications | Water, Oil, Gas, |
Nominal Diameter |
DN40-DN300 handle lever
|
Operation Temperature | -10°C~150°C |
Grade | C | Mn | Si | S | Cu | Ni | Cr | Fe | Mo | P |
Alloy 20 | 0.07 max | 2.00 max | 1.00 max | 0.035 max | 3.0-4.0 | 32.0-38.0 | 19.0-21.0 | 29.85 min* | 2.0-3.0 | 0.045 max |
Density | Melting Point | Tensile Strength | Yield Strength (0.2%Offset) | Elongation |
8.1 g/cm3 | 1443 °C (2430 °F) | Psi -80,000, MPa -551 | Psi – 35,000, MPa – 241 | 30% |
STANDARD | WERKSTOFF NR. | UNS | AFNOR | EN |
Alloy 20 | 2.4660 | N08020 | Z2NCUD31-20AZ | NiCr20CuMo |
Alloy UNS N08020 Ball Valve | 20 Alloy Gate Valve |
Alloy N08020 Ball Valve | Carpenter 20 Gate Valve |
DIN 2.4660 Tri-Clamp Ball Valve | Alloy 20 UNS N08020 Check Valve |
Alloy 20 Z types Globe Valve | Alloy 20Cb-3® Check Valve |
20 Alloy Stainless Steel Globe Valve | Carpenter 20 Plug Valve |
Alloy 20 Gate Valve
Alloy 20 Butterfly Valve
Alloy 20 Plug Valves
Alloy 20 Globe Valve
Alloy 20 Diaphragm Valve
Alloy 20 Swing Check Valve
Density | 8.05 g/cm3 |
Thermal conductivity | 12.3 W/mK |
Temperature ºF | 150 | 300 | 600 | 900 | 1500 | 2500 | 4500 |
-20 to 100 | 290 | 750 | 1,500 | 2,250 | 3,750 | 6,250 | 11,250 |
200 | 260 | 750 | 1,500 | 2,250 | 3,750 | 6,250 | 11,250 |
300 | 230 | 730 | 1,455 | 2,185 | 3,640 | 6,070 | 10,925 |
400 | 200 | 705 | 1,410 | 2,115 | 3,530 | 5,880 | 10,585 |
500 | 170 | 665 | 1,330 | 1,995 | 3,325 | 5,540 | 9,965 |
600 | 140 | 605 | 1,210 | 1,815 | 3,025 | 5,040 | 9,070 |
650 | 125 | 590 | 1,175 | 1,765 | 2,940 | 4,905 | 8,825 |
700 | 110 | 570 | 1,135 | 1,705 | 2,840 | 4,730 | 8,515 |
750 | 95 | 530 | 1,065 | 1,595 | 2,660 | 4,430 | 7,970 |
800 | 80 | 510 | 1,015 | 1,525 | 2,540 | 4,230 | 7,610 |
850 | 65 | 485 | 975 | 1,460 | 2,435 | 4,060 | 7,305 |
900 | 50 | 450 | 900 | 1,350 | 2,245 | 3,745 | 6,740 |
950 | 35 | 375 | 755 | 1,130 | 1,885 | 3,145 | 5,655 |
1000 | 20 | 255 | 505 | 760 | 1,270 | 2,115 | 3,805 |
1050 | 20(1) | 170 | 345 | 515 | 855 | 1,430 | 2,570 |
1100 | 20(1) | 115 | 225 | 340 | 565 | 945 | 1,695 |
1150 | 20(1) | 75 | 150 | 225 | 375 | 630 | 1,130 |
1200 | 20(1) | 50 | 105 | 155 | 255 | 430 | 770 |
Design standard | ASME B 16.34 |
Testing standard | API 598/ BSEN 12266 PART-1/MSS-SP-61 |
face to face dimensions forbutt weld & flanged valves | ASME B 16.10 |
flanged design | ASME B 16.5 |
Butt -weld design | ASME B 16.25 |
pressure- temp rating | ASME B 16.34 |
Valve Type | Class Rating | Size Range |
Gate Valve | 150# | 1/2" to 72" |
Gate Valve | 300# | 2" to 48" |
Gate Valve | 600# | 2" to 42" |
Gate Valve | 800# | 1/2" to 2" |
Gate - PRESSURE SEAL VALVE | 900# | 1/2" to 24" |
Gate - PRESSURE SEAL VALVE | 1500# | 1/2" to 24" |
Gate - PRESSURE SEAL VALVE | 2500# | 1/2" to 12" |
Gate - CRYOGENIC VALVE | 150# | 2" to 36" |
Gate - CRYOGENIC VALVE | 300# | 2" to 36" |
Gate - CRYOGENIC VALVE | 600# | 2" to 24" |