Selecting proper hoses and fittings
Proper hose selection means choosing a product which meets the technical requirements of a particular system or equipment. These requirements must be precisely specified to ensure safe and reliable operation. Proper hose selection is possible only if full information on hose operating conditions or variables in the application are known as well as such aspects as required certificates, compliance with standards.
Basic information needed to select the proper hose:
medium (substance to be conveyed through the hose assembly),
maximum working pressure,
temperature (internal, ambient),
any other factors that may affect operation and service life of the hose assembly, e.g.: vibrations, deformation of the hose assembly during operation, exposure to damage, etc.,
hose end connections (fitting type, thread size, sealing type),
fitting attachment method (clip, clamp),
hose length (hose assembly – overall length with fittings),
additional requirements (certificates, compliance with standards).
The guidelines listed above apply when selecting other products such as: couplings, valves, fittings, quick release couplings etc.
The most popular industrial hoses
NR, NBR, EPDM, SBR, CR
PVC (PCV), PU, PA, PE, PP
The most popular couplings
Standard ways to assemble fittings to industrial hoses
Each hose assembly produced at Tubes International is customer driven, so either it is mass production or single-item output, we always do it according to the strictly defined specifications of our Customer.
Fittings are mechanically crimped from the outside (compressed) and secured with a lock (collar) against sliding off from the hose tail of the fitting.
Installation with smooth ferrules
Fitting is attached to a low pressure hose with a smooth ferrule using a crimping machine.
Band-It banding system
Fitting is attached to an industrial hose with a steel band which is tensioned on the hose.
Safety clamp installation
Safety clamps tighten the hose on the hose tail and secure with a lock (collar) against sliding off from the hose tail of the fitting.
Steam clamp installation
Special fittings for steam are mounted with clamps bolted together on the hose.
Malleable iron clamp installation
Fittings are mounted with malleable iron clamps.
Installation with clips or clamps
Different types of clips or clamps are used to tighten the hose on the hose tail.
Installation with bridge clamps
Fittings are attached to ducting hoses with special bridge clamps (clockwise and counter-clockwise).
PUSH-ON fitting installation
Special PUSH-ON fittings are mounted to rubber hose intended for use with these fittings.
Product example: Corroflon DN50 (2″) hose assembly with stainless steel AISI 316 fittings type DIN 11851
used by the companies leading in the food, chemicals and cosmetics industries.
the conveyed product is only in contact with PTFE, which meets all hygiene and chemical resistance standards.
no crevices, no potential for product entrapment
smooth PTFE hose wall with wide-profile convolutions ensures cleanability.
blue antistatic EPDM rubber
helically convoluted, very thick PTFE (convolutions ensure high flexibility)
AISI 304 stainless steel braid and wire helix (wire helix ensures excellent resistance to mechanical damage and vacuum)
stainless steel hygienic coupling according to DIN 11851 standard.