Nozzle- and rubber flanges
In hoses featuring SL flanges, a steel support is placed at the end of the hose in the core. The end of the support is furnished with a coil. On this coil the core rubber is moulded to a sealant with embedded O-rings. The pressure and stability carrier is fixed on the outside of the support.
This results in a heavy-duty design that enables very high pressure hoses to be fitted with this flange. The entire construction is covered with rubber and is thus protected from outside influences. Behind the support coil, a freely rotatable flange is mounted.
The SL flange is suitable for the absorption of high tensile forces in combination with side drag. These stresses are common for hoses that are often bent during use. With its metallic surface the support provides the opportunity to assemble overlay hoses and earthing mechanisms.
The GR flange is basically the same as the FR flange but comes without the rear steel flange. This design is often used in areas where hoses are built into machines or when seal effects are required on both sides of the flange. One particular area of application for this type of flange is in the construction of squeeze valves. When using this flange it must be noted that for manufacturing reasons, the flange thickness is characterised by its high level of tolerance.
The flange-type GG is a variety of the type GR, which has no built in steel reinforcement. It is flexible and available with small thickness. Type GG-flange is not suited for use in pressure pipings.
The construction of this flange is very similar to the SL model, the only difference is that instead of a coil, the flange is mounted on the support.
The SF flange also shares the same areas of application and advantages with the SL flange. It is recommended for use where the assembly situation is not a problem and unlimited rotatability of the flange is not required.
Both support-flange designs are available as 150 < NW < 400 for DIN flanges. The standard material is steel. Flanges made from other metals are available on request. This also applies to non-standard measurements.