192 www.stauff.com/5/en/#192 Colour Marking Rings for STAUFF Quick Release Couplings Introduction If multiple identical or similar quick release couplings are used in a vehicle, machine or system, there is a risk of confusion when connecting coupling elements. The option of using colour marking rings for STAUFF Quick Release Couplings allows the quick and correct matching of lines. Initially, STAUFF offers the colour marking rings for the following Series: § QRC-FF (flat-face push-to-connect couplings) § QRC-FC (flat-face push-to-connect couplings) § QRC-HP (push-to-connect couplings with poppet valve) § QRC-HS (screw-to-connect couplings with poppet valve) § QRC-RH (flat-face pipeline couplings) § QRC-FG (flat-face screw-to-connect couplings) Successive introduction of colour marking rings for additional Series is planned for the future. How exactly has STAUFF implemented the colour marking ring option for quick release couplings? As a standard, all male tips and female bodies from the Series listed above are supplied with grooves in easily visible locations on external parts. The customer/user can insert rings into these grooves for colour marking the couplings. Which material is used to manufacture the rings for colour marking the couplings? The rings are manufactured from thermoplastic polyurethane (TPU). TPU is a lightweight, elastic material with very good abrasion and wear resistance, paired with high resilience. Do these grooves impact the performance or durability of the quick release couplings? No, the integrity of the coupling is not affected. The grooves for the colour marking rings are placed in non-critical areas on external parts, such as the sliding sleeve. Extensive finite-element-method (FEM) simulations during the development phase and additional burst and pressure tests at the STAUFF Technology Centre delivered the clear conclusion that the grooves have no impact on performance and that the quick release couplings continue to meet or exceed the usual high requirements. Grooves for colour marking rings Colour marking rings in the corresponding groove How are the colour marking rings installed on the couplings? The rings for colour marking the couplings can be installed by the customer/user as required. Does STAUFF also supply couplings with pre-assembled colour marking rings? No, this is currently not planned due to the large number of possible combinations. Is a special tool required for installing the colour marking rings? No special tools are required. Simple hook tools can make installation easier, though. The development focused especially on a user-friendly solution. If necessary, the rings can also be expanded manually and pushed into the corresponding position. FEM simulations with colour marking groove FEM simulations without groove Catalogue 5 § Edition 03/2024 Colour Marking Rings / Spare Parts / Accessories
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