Applications
In chemical and refining service the pressure rating is rarely the hard part. Material compatibility is. A component that holds 20,000 psi indefinitely on nitrogen can fail in weeks on the wrong media, and the selection decision belongs at enquiry rather than after commissioning.
Metal-to-metal
Sealing
5 alloys
316, Hastelloy, Inconel, Ni 200, Ti
At enquiry
Material advice
01
Stainless steel 316 is standard across the HIFLUX range, cold-formed for corrosion resistance at pressure. Where the media rules it out, the following alloys are available:
| Material | Typical reason for specifying |
| Stainless steel 316 | Standard — general chemical and process service |
| Hastelloy | Strongly oxidising and reducing media |
| Hastelloy C276 (wetted parts) | Aggressive media where full-body alloy is not required |
| Inconel 600 / 625 / 825 | High temperature and chloride-bearing service |
| Nickel 200 | Caustic service |
| Titanium | Chloride and seawater-bearing process streams |
Send the media composition, concentration and temperature and we will confirm what is appropriate. Material selection is not something to infer from a datasheet alone.
02
Cone and thread connections seal metal against metal, with no elastomer, gasket or thread sealant in the pressure path. On a process line carrying solvents, acids or high-temperature media, that removes an entire category of compatibility problem — there is no seal material to swell, harden or leach.
Operating range across the fitting family is −423°F (−252°C) to 1200°F (649°C).
03
| Component | Application |
| High-pressure needle valves | Isolation and throttling on process and sample lines |
| Check valves | Backflow prevention on injection and dosing |
| Line filters | Particulate protection upstream of instrumentation |
| Relief valves | Overpressure protection, several set types |
| Safety head and rupture disc | Defined-failure protection where a relief valve is unsuitable |
| Cone and thread fittings | Elbow, tee and cross, 10,000 to 150,000 psi |
| High temperature valves | Elevated-temperature process duty |
| Pressure regulators | Setting and holding line pressure |
| Manifold blocks | Multi-port distribution and instrument hook-ups |
