Series HH

The HH series screw-to-connect couplings with poppet valve from STAUFF are designed for high-pressure applications where maximum safety and resilience are required. They consist of a coupling sleeve with a screw sleeve and a coupling plug with an external thread and allow hydraulic lines to be safely connected and disconnected without tools. The HH series is particularly suitable for industrial hydraulic systems, rescue hydraulics and clamping hydraulics.

The precise design minimises play in the internal components after coupling, effectively preventing material fatigue. In addition, the risk of "brinelling" - permanent indentations on the surface of the plug - is eliminated, which often occurs in extreme applications with conventional plug-in couplings.

The HH series is available in several nominal sizes and is designed for operating pressures of up to 650 bar. The burst pressure is at least four times the operating pressure and ensures maximum safety.

Available options:

• Nominal sizes: 10, 12.5, 19, 25, 31, 38, 51 (3/8" to 2")

• Connection under pressure up to 100 bar possible

• Stainless steel versions available

The HH series from STAUFF offers a combination of high load capacity, maximum safety and effective corrosion resistance. It is the preferred choice for high-pressure connections in demanding environments.

• screw-to-connect coupling for secure connection under extreme conditions

• Dome bar under pressure

• Minimised play of internal components reduces material fatigue

• No brinelling - ideal for pulsating applications

• Corrosion protection class K5 due to zinc/nickel coating

• High safety factor: burst pressure ≥ 4 × operating pressure

• High availability and fast delivery from the STAUFF programme

The HH series couplings fulfil the requirements of international standards for high-pressure screw-to-connect couplings. The surface treatment fulfils the requirements for reliable corrosion protection in accordance with VDMA 24576.