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SS - Stainless Steel Braid
Purpose
Stainless Steel braided hose is the general purpose product, and can be used in applications involving high temperatures and working pressures. High tensile AISI 304 stainless steel wire is used, to give maximum pressure resistance and external protection to the hose.
PB - Polypropylene Braid
Purpose
Polyproylene 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 to +100°C (-22°F to +212°F). PB briad is lighter in weight, and any broken strands will not cut the operator's hands. In addition , PB briad is not prone to "chloride stress corrosion", and has generally good chemical resistance.
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. This should only be used,
however, in conjunction with a Monel or Hastelloy Helix Wire.
Full details about the applications should be given to Aflex
Hose for evaluation and recommendations. Specifications - Same as for SS except that Burst
Pressure and Maximum Working Pressures are both reduced by 50% of the SS pressures listed.
Also, the sizes range is restricted from 1/2" up to 2" bore only.
KYB - Kynar 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. Monel or Hastelloy wire should be
used.
Full details about the applications should be given to Aflex
Hose for evaluation and recommendations.
TO - Tube Only (no braid)
Purpose 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.
SPECIAL NOTE:
EC - Electrical Continuity
(Also known as 'Electrically Bonded')
The requirements for this are specified in the German Document
BRG 132 and EN ISO 8031:2009 Annex A, when tested in
accordance with EN ISO 8031:2009 Clause 5, which requires that
the resistance between end fittings shall be less than 102 ohms per
assembly. For hose assemblies which meet this requirement a
Grade "M" marking can be applied in accordance with EN ISO
8031:2009 Annex A if requested.
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