Many applications require a metal “bellows” type hose which provides an all welded, flexible alternative to rigid pipe and tubing with zero permeation even at high pressures and cryogenic temperatures. A variety of alloys, safety features and options are available so that an assembly matching your precise needs can be provided. All hose assemblies are constructed with heavy-gauge end fittings. Maximum allowable working pressure and date of manufacture are permanently marked on each assembly. 316 SS pigtails are designed for strong, safe and flexible operation in demanding specialty gas environments. Zero permeation characteristics do not allow gas or atmosphere to pass through its wall in either pressure or vacuum applications. Ideal for flammable, toxic, high purity and small molecule gases.
The convoluted inner tube is made in stainless steel, material grade AISI 316L, and the braid in stainless steel, material grade AISI 304. The convoluted profile makes the hose flexible even under high pressure. The braid is closely wrought over the tube, making the high pressure hose suitable for very high pressures. The stainless steel alternative is often used when the demands are high regarding purity, because of the fact that the stainless steel high pressure hose is 100% free from permeation. To obtain maximum quality control of the manufactured applications, we burst pressure tests every batch of hose brought into stock. The results are archived for minimum 10 years. Our pressure test certificate of the manufactured batch is sent together with goods. To ensure the purity of the high pressure products sent out, we clean the hoses internally, cap the fittings and pack them individually in plastic bags. We also label all products with a batch number to ensure traceability.