Home > Duplex Check Valve
Duplex Check Valvesare essential elements within industrial systems, and they are recognized for their outstanding corrosion resistance and superior strength. These valves are constructed from duplex stainless steel and deliver dependable performance in challenging environments including oil and gas, chemical processing, and marine applications. Engineered to stop backflow and maintain system integrity, duplex check valves deliver exceptional durability, temperature tolerance, and cost-effectiveness, making them a favored option across numerous industries.
| INSTRUMENTATION VALVES MATERIAL | DUPLEX 2205 |
| INSTRUMENTATION VALVES SIZE | 6 MM TO 50 MM and 1/8″ TO 2″ |
| PATTERN FLOW | STRAIGHT |
| THREADS | BSPP, NPT, METRIC, BSPT,UNF, JIC |
| INSTRUMENTATION VALVES ORIFICE SIZE | 2 MM – 40 MM |
| CONNECTION | SOCKET WELD END, TUBE END, THREADED, FLANGE END |
| INSTRUMENTATION VALVES BODY SHAPE | HEXAGON |
| EQUIVALENT BRANDS | PARKER, SWAGELOK, DK-LOK, STAUFF, OLIVER VALVES, HAMLET, HOKE |
| CRACKING PRESSURE | 0.5 BAR |
| TYPE | SPRING TYPE, POPPET TYPE |
| RATING PRESSURE | 20000 PSI, 1500 PSI, 10000 PSI, 3000 PSI, 6000 PSI, 15,000 PSI |
| MEDIA TEMPERATURE | (-50* C – 350*C ) AS PER PRESSURE RANGE |
| MEDIA | SEA WATER , HYDRAULIC AIR, OIL, GAS, WATER, HOT WATER , STEAM, COLD WATER , CHEMICAL |
| BODY TYPE | FORGED, BAR STOCK |
| INSTRUMENTATION VALVES PACKING DETAILS | WOODEN PALLET, BOX PACKING |
| ELEMENT | DUPLEX 31803 | DUPLEX 2205 |
|---|---|---|
| C | 0.030 max | 0.030 max |
| NI | 4.50 – 6.50 | 4.50 – 6.50 |
| MN | 2.00 max | 2.00 max |
| S | 0.020 max | 0.20 max |
| FE | 63.72 min | 63.54 min |
| P | 0.030 max | 0.030 max |
| SI | 1.00 max | 1.00 max |
| MO | 3.0 – 3.5 | 2.50 – 3.50 |
| CR | 22.0 – 23.0 | 21.0 – 23.0 |
| N | 0.14 – 0.20 | 0.08 – 0.20 |
| Grade | Hardness(BHN) | UTS (MPa) | YS (MPa) | % Elongation |
| 2205 | 293 max. | 655 min. | 450 min. | 25 min. |
| 31803 | 293 max. | 620 min. | 450 min. | 25 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 maintain an extensive inventory of more than 25,000 tons of top-quality materials kept ready in stock.
Get in touch with us to receive a fast quote for your requirement.
We supply these Duplex Check Valve conforming to DIN, ISO, JIS or ANSI Standard.
Duplex Check Valve uses are as varied as the sectors they support, led chiefly by the aerospace, railway, construction and automotive sectors along with petrochemical, nuclear, medical, Oil & Gas, Chemical, Pharmaceutical, Food & Beverage, Nuclear, Thermal Power plants, Paper and Pulp, marine and mining, etc.
When installing a Duplex check valve, verify that the materials are compatible with the system’s fluids to avoid corrosion and degradation. Proper alignment and firm fastening are essential to prevent leaks and guarantee correct functioning. The valve must be positioned in the proper flow direction, leaving adequate room for maintenance and inspection. In addition, follow the manufacturer’s guidelines for pressure ratings and torque settings to achieve the best performance and durability. Thoroughly clean and prepare the piping system to avoid contamination and harm to the valve.
Email: sales@koasteel.nz
