SS - Stainless Steel Braid 

Purpose  - Corroflon GP,SS is the general purpose grade of hose and has been carefully designed to satisfy the widest range of application requirements.

Design  - The hose liner is manufactured from hose quality grade PTFE conforming to FDA requirements 21 CFR 177.1550 and USP Class VI, extruded in to tube and helically convoluted.  It also includes a heavy gauge Grade 304 stainless steel reinforcing wire helically wound into the external root of the convolutions to strengthen the convoluted shape.  The braid is high tensile grade 304 stainless steel wire braid to give maximum protection to the hose against internal pressure and external abrasion.

PB - Polypropylene Braid

Purpose  - Polypropylene braided hose is often preferred to SS Braid in application involving frequent handling and movement of the hose, and where temperatures are within the range -30°C to +100°C.  PB braid is lighter in weight and any broken strands will not cut the operator's hands.  In addition, PB braid is not prone to chloride stress corrosion.

NB  Electrical Continuity is maintained between end fittings by welding the helix wire to the spigot or ferrule at each end.

Specification  As for GP,SS except that the operating temperature range (internal) is reduced to -30°C to +100°C, and the weight per meter is reduced by about 20%.

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.  One way in which this can happen is when Chlorine or Fluorine are being transferred.  Diffusion of trace quantities of such gases through the PTFE liner can lead to atmospherically wetted fluorine or chlorine attacking the braid material, in which case the Hastelloy Braid would be resistant.

Specifications  - Same as for SS except that Burst Pressure and MWP are 50%.

KYB - Kynar Braid  (Polyvinylidene Fluoride Monofilament)

Purpose  - Kynar Braid is primarily used where severe chemical corrosion conditions exist around the outsides of the hose.  This can happen when Chloride or Fluorine are being transferred.  Diffusion of these gases through the PTFE liner can lead to atmospherically wetted chlorine attacking the braid material, in which case the Kynar Braid would be resistant.  For such applications it is recommended that Aflex Hose should always be given full application details to ensure an appropriate recommendation.  Other, special braid alternatives for such applications include, Monel and Hastelloy C276 wire.

Specification  - As for GP,SS except that the maximum working pressure is reduced by 50%, the maximum operating temperature (internal) is 120°C and the weight per metre is reduced by 30%.

TO - Tube Only (no braid)

Purpose  TO grade hose 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.