Home > Duplex Needle Valve
Duplex Needle Valvesare critical for dependable operation in corrosive, high-pressure settings. Constructed from duplex stainless steel, these valves deliver outstanding durability and corrosion resistance, which makes them well suited for use in oil and gas, chemical processing, and marine industries. Thanks to their accurate flow control, duplex needle valves provide dependability and efficiency in essential fluid handling tasks, helping to boost safety and operational performance.
| MATERIAL | DUPLEX |
| ORIFICE SIZE | 2 MM – 9.5 MM |
| SIZE | 6 MM TO 50 MM and 1/8″ TO 2″ |
| THREAD | METRIC, NPT, BSPP, BSPT, JIC, UNF |
| FLOW PATTERN | STRAIGHT, ANGLE, CROSS PATTERNS |
| BODY SHAPE | ROUND, SQUARE, HEXAGON |
| FUNCTION | 3 WAY, 2 WAY |
| CONNECTION | THREADED, TUBE END, BUTT WELD, SOCKET WELD, FLANGE END |
| PRESSURE RATING | 15,000 PSI, 3000 PSI, 1500 PSI, 10000 PSI, 6000 PSI, 20000 PSI |
| BODY TYPE | FORGED, BAR STOCK |
| MEDIA | AIR, HYDRAULIC OIL, GAS, WATER, HOT WATER , STEAM, SEA WATER , COLD WATER , CHEMICAL |
| EQUIVALENT BRANDS | OLIVER VALVES, SWAGELOK, PARKER, DK-LOK, HAMLET, HOKE |
| HANDLE | KNOB HANDLE, BAR T-HANDLE, WHEEL HANDLE |
| MEDIA TEMPERATURE | (-120* C – 500*C ) AS PER PRESSURE RANGE |
| PACKING DETAILS | WOODEN PALLET, BOX PACKING |
| ELEMENT | DUPLEX 2205 | DUPLEX 31803 |
|---|---|---|
| NI | 4.50 – 6.50 | 4.50 – 6.50 |
| C | 0.030 max | 0.030 max |
| S | 0.20 max | 0.020 max |
| N | 0.08 – 0.20 | 0.14 – 0.20 |
| MN | 2.00 max | 2.00 max |
| P | 0.030 max | 0.030 max |
| FE | 63.54 min | 63.72 min |
| MO | 2.50 – 3.50 | 3.0 – 3.5 |
| SI | 1.00 max | 1.00 max |
| CR | 21.0 – 23.0 | 22.0 – 23.0 |
| Grade | % Elongation | YS (MPa) | Hardness(BHN) | UTS (MPa) |
| 31803 | 25 min. | 450 min. | 293 max. | 620 min. |
| 2205 | 25 min. | 450 min. | 293 max. | 655 min. |
At Koasteel, we take pride in being the largest supplier and manufacturer in the New Zealand, delivering advanced solutions for every one of your piping requirements. With cutting-edge production facilities strategically positioned in the New Zealand, we hold an extensive inventory of more than 25,000 tons of top-quality materials kept ready in stock.
Reach out to us for a fast quote tailored to your requirement.
We supply these Duplex Needle Valve conforming to DIN, ISO, JIS or ANSI Standard.
Duplex Needle Valve uses are as varied as the sectors they support, led mainly by the aerospace, railway, construction and automotive fields, along with petrochemical, nuclear, medical, Oil & Gas, Chemical, Pharmaceutical, Food & Beverage, Nuclear, Thermal Power plants, Paper and Pulp, marine and mining, etc.
When installing duplex needle valves, several factors are vital for achieving the best performance and durability. Verify that the valve matches the system’s pressure and temperature demands, since duplex stainless steel valves are commonly employed in high-pressure and corrosive settings. Correct alignment and firm mounting are essential to avoid leaks and guarantee dependable operation across changing conditions. Choose compatible sealing materials appropriate for duplex stainless steel to preserve the valve’s integrity and functionality. Adhere to the manufacturer’s instructions for installation to optimize the valve’s efficiency and service life.
Email: sales@koasteel.nz
