Instrument & Manifold valves
Compression fittings are used extensively in hydraulic, gas, and water systems to enable the connection of tubing to threaded components like valves and tools.[1] Compression fittings are suited to a variety of applications, such as plumbing systems in confined spaces where copper pipe would be difficult to solder without creating a fire hazard, and extensively in hydraulic industrial applications. A major benefit is that the fittings allow easy disconnection and reconnection.
In small sizes, the compression fitting is composed of an outer compression nut and an inner compression ring (ferrule) that is typically made of brass, copper, or steel. Ferrules vary in shape and material but are most commonly in the shape of a ring with beveled edges. When the nut is tightened, the ferrule is compressed between the nut and the receiving fitting; causing both ends of barrel shaped copper olives to be clamped around the pipe when the middle of the ferrule bows away from the pipe, in the case of hydraulic style ferrules they currently have one end which is larger with a 45 degree chamfer which tapers away (from installation contact with the nut) and the small end generally has two internal biting edges, for applications demanding much higher pressure, that penetrate the outside diameter of the tube, the fittings must be tightened to guidelines as per DIN2353 as not to exceed the elastic limit of the steel ferrules
Compression fittings are especially useful in installations that may require occasional disassembly or partial removal for maintenance etc.
Technical Specifications of Tube Fittings
| Size | 1/16 OD to 2 OD, Od to 50mm OD |
| Pressure Rating | 300/1000/3000 psi for Brass and 6000 psi for Stainless Steel |
| Thread Types | NPT/NPTF Threads, BSP Thread, JIS Tapered Pipe Thread-PT, SAE Thread, Metric Tapered/Parallel Thread. |
| Materials | Titanium, Monel, Nickel, Stainless Steel Inconel, Hastelloy, Aluminum, Copper, Brass, and Bronze |
| Material Grades | 304 | 304L | 316 | 316L | 316TI | 321 | 347H | 310S | 317L | 904L |
| Schedules | 5S, 10S, THE 40S, 80S, 10, 20, 40, STD, 60, 80, XS, 100, 120, 140, 160, and XXS |
| Forms | Seamless, welded & Fabricated |
Specification(s)
| Size | ½” To 6” | ½” To 6” | ½” To 6” | ½” To 6” | ||
|---|---|---|---|---|---|---|
| ANSI Class | 1000 | 3000 | 6000 | 9000 | ||
| TEST PRESSURE BODY(KG/CM2) | 32 | 79 | 156 | 236 | ||
| TEST PRESSURE SEAT (KG/CM2) | 22 | 57 | 115 | 172 | ||
| MATERIAL OF CONS. | CS, SS304, SS304L, SS318, SS16L, P11, P22 | |||||
| DESIGN STANDARDS | Manufacturer, Standard Design | |||||
| TESTING STANDARDS | As per relivent pressure class | |||||
| END CONNECTION | SCREWED & SOCKETWELD | |||||