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TO - Tube Only (No braid)
TO grade hose (available in both GP and AS) is a lightweight
hose, used in applications where working pressures are low
and where there is no need for the physical protection offered
by an external braid. TO grade tube is fully vacuum proof up
to 100°C. TO grade hose assemblies are not Electrically
Continuous ('EC').
SS - Stainless Steel Braid
Stainless Steel braid hose is the general purpose product and can be used in applications involving high temperatures and working pressures. High tensile grade AISI 304L stainless steel wire is used, to give maximum pressure resistance and external protection to the hose.
PB - Polypropylene Braid
Polypropylene braided hose is often preferred to SS in applications involving frequent handling and movement of the hose, and where temperatures are within the range -30°C and +100°C (-22°F to +212°F). Polypropylene braid is lighter in weight, and any broken strands will not cut the operator's hands. Electrical Continuity is achieved by 2 monel wire plaited earthing strips, criss-crossed underneath the braid, and connected to the fittings at each end. In addition, Polypropylene braid is not prone to "chloride stress corrosion" and has generally good chemical resistance. To ensure *Electrical Continuity between end fittings 2 strands of Monel wire earthing strips are criss-crossed on to the liner, underneath the Polypropylene Braid. These are folded back underneath the ferrule at both end fittings, to make an electrical contact.
NOTE: Prolonged exposure to sunlight eventually results in UV degradation of PB braid.
HB - Hastelloy Braid (C276 Grade)
Purpose - Hastelloy Wire Braid is used instead of SS where severe
chemical corrosion conditions exist around the outside of the
hose. The most usual way in which this can happen is when
Chlorine, Bromine, Hydrogen Fluoride, Hydrogen Chloride or
Phosgene are being transferred. Diffusion of trace quantities
of such fluids or gases through the PTFE liner can lead to
atmospherically wetted halogen chemicals attacking the braid
material, in which case the Hastelloy Braid would be resistant
up to 60°C (140°F) maximum.
Full details about the applications should be given to Aflex
Hose for evaluation and recommendations. Specifications - Same as for SS except the Burst Pressure and MWP are both reduced to 50% of the SS pressures listed.
KYB - KYNAR (PVDF) Braid (Polyvinylidene Fluoride Monofilament)
Purpose - Kynar Braid is used in the same application as Hastelloy
Braid, but only in applications where the reduced pressure
ratings of KYB as listed are acceptable. A Safegard Sleeve is
always recommended. If Electrical Continuity (EC) is required
consult Aflex Hose.
Full details about the applications should be given to Aflex
Hose for evaluation and recommendations.
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