New in the Stauff range: universal plug-in couplings with cone valve

Source: press release, 3 March 2020

With the QRC-IB, Stauff presents the revised version of the universal, standard-compliant plug-in couplings for industrial hydraulics. A zinc-nickel coating provides effective corrosion protection
With the QRC-IB, Stauff presents the revised version of the universal, standard-compliant plug-in couplings for industrial hydraulics. A zinc-nickel coating provides effective corrosion protection (photo: Stauff)

Stauff has added the revised QRC-IB series to its range of plug-in couplings for quick connecting and releasing of hydraulic lines. This series can be used universally in industrial and stationary hydraulics and features particularly high corrosion resistance, among other things.

The QRC-IB series complies with the requirements of ISO 7241/Series B, targeting the broad international market of standard hydraulic couplings. These couplings – where design and performance are defined by a standard – are widely used, especially in the aftermarket and replacement sectors.

With this series, Stauff demonstrates that distinctions can be made even on standardised couplings, for example with regard to service life under difficult ambient conditions. The revised series of these plug-in couplings is extraordinarily corrosion resistant. It uses a zinc-nickel-based corrosion protection coating, which Stauff chose after intensive trials and comparative tests.

The coating offers maximum resistance to red rust/base metal corrosion in practical application and exceeds even the highest requirements of corrosion protection class K5, which are defined in VDMA standards sheet 24576 for tube connections. The high ductility of the coating is the prerequisite for the above-average wear protection under high mechanical strain.

The QRC-IB series is available from stock in eight sizes from DN 6 to DN 51 for operating pressures up to 500 bar (depending on coupling size) at rated flows up to 1000 litres/minute. The range also includes stainless steel and brass versions.

The compact design of this standardised coupling allows use in tight machine spaces of stationary and mobile hydraulics. Convenient and reliable operation is ensured even then: The operator only has to pull back the sliding sleeve of the loose coupling half.

In addition, the QRC-IB couplings now feature a coding which allows quick identification and traceability. The high safety factor is also typical for Stauff: The bursting pressure of the QRC-IB is at least four times the operating pressure.