Duplex Steel Valves are made up of the duplex grade of steels. The duplex grade has high strength and high corrosion resistance with austenitic and ferritic phases in the microstructure. The metallurgy makes these steels to be used in a wide range of applications. The valves made up of this material are reliable, strong and corrosion resistant. The duplex stainless steel valves can come in three categories as standard duplex, super duplex and lean duplex grades. Each of them better than the former with corrosion and strength. There are different types of valves such as ball valves and gate valves and they are used for specific purposes in an application. In applications which require to control a bidirectional flow, the duplex stainless steel butterfly valves are used.
Duplex Stainless Steel Ball Valve
Duplex 2205 Globe Valve
1000WOG UNS S31803 Duplex Steel Gate Valve
These are gate valves with butterfly gates. The size of the valves ranges from ½ inches to 48 inches and more depending on the standard specification. The valve types vary and the operational models vary as well.
The duplex stainless steel ball valves use a ball for the control of liquids where the gate valves use a gate for the control. These valves are used in the oil and gas, water, petroleum, pharmaceutical, chemical and other applications. The duplex stainless steel gate valves are the most used of this grade of valves.
Material | Duplex Steel 2205 |
---|---|
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 |
Fe |
Ni |
Duplex Steel S32205 201 |
0.02 max |
0.35 max |
0.35 max |
0.01 max |
0.25 max |
0.40 max |
99.0 min |
Element |
Density |
Melting Point |
Tensile Strength |
Yield Strength (0.2%Offset) |
Elongation |
Duplex Steel S32205 201 |
8.9 g/cm3 |
1446 °C (2635 °F) |
Psi – 67000 , MPa – 462 |
Psi – 21500 , MPa – 148 |
45 % |
STANDARD |
WERKSTOFF NR. |
UNS |
JIS |
BS |
GOST |
AFNOR |
EN |
Duplex Steel S32205 |
1.4462 |
S32205 |
NW 2201 |
NA 12 |
НП-2 |
– |
LC-Ni 99 |
UNS S32205 F60 Check Valve
Duplex Stainless Steel Butterfly Valves
2205 Duplex Trunnion Ball Valve
Duplex 2205 UNS S32205 Globe Valves
UNS S32205 Angle Control Valve
Duplex Steel Grade 2205 NRV Valves
Specification | ASTM A351 / A494 & ASME SA351 / SA494 |
Valve Design | EN 593 (BS 5155), API 609 Cat A, MSS SP-67 |
Pressure Testing | EN 12266 Part 1&2, API 598, ISO 5208 |
End Connection | Wafer Flangeless, Lugged (EN 1092), ASME B16.42 & ASME B16.5 Class150, BS 4504 PN 10/16, ASME B 16.47 Series A & B, AWWA C 207 Class E |
Face-to-Face | EN 558 Series 20 (For 350mm - EN 558 series 25), API 609 Cat A, MSS SP-67 (Narrow Body), ISO 5752 (Short) |
Body | SG Iron EN 1563-400/ 18, Carbon Steel A 216 Gr. WCB |
Seat/ Liner | Nitrile Rubber, EPDM |
Disc | SG Iron EN 1563-400/ 18 with Nylon-coating, Stainless Steel A351 CF8, CF8M to A 351, CF3M, AB2 |
Shaft | ASTM A479 Type 410 with Xylan® Coating, 17-4 Ph |
Bearing | Acetal, PTFE, Phosphor Bronze |
Cd4mcun Gate Valve | 25cr-7ni-mo-n Globe Valve |
ASTM A995 Cd3mn 3a Duplex Globe Valve | 27cr-7ni-mow-n Check Valve |
Uns J93372 Check Valve | Cd3mwcun Pressure Relife Valve |
J93404 Ball Valve | Ce3mn Safety Valve |
24cr-10ni-mo-n Gate Valve | Duplex 2205 Plug Valve |