Hydraulic coupling, Series B, nickel-plated brass, G 1/4 IT - Riegler 107728

Hydraulic coupling, Series B, nickel-plated brass, G 1/4 IT, I.D. 6.3, Operating pressure max. 400 bar Acc. to ISO 7241-1, B Series. This coupling series combines an extremely small pressure drop with maximum hydraulic power transmission. Interchangeable with all couplings and plugs manufactured according to the above standard. The patented pressure eliminator permits disconnection even if back pressure has built up (up to 200 bar). The pressure eliminator can be used in all applications where there is a risk of pressure build-up after the line has been separated. It allows effortless connection under pressure. The mating part must be pressureless in order for the eliminator to function optimally. Areas of application: chemical industry, food technology, automotive, offshore.

Standards and origin

• Customs tariff number: 84812010
• Country of origin: SE

About Hydraulic couplings

Hydraulic couplings disconnect and reconnect fluid lines without tools. Versions that shut off on both sides hold the medium in each half of the line, so very little oil is lost when uncoupling. Maximum operating pressure runs from 10 to 400 bar depending on size, with connections from G 1/8 IT to G 1 IT.

What matters when choosing

• Connection: G 1/8 IT through G 1 IT, which together with the nominal bore sets the flow that can be reached.
• Operating pressure: the maximum lies between 10 and 400 bar. Smaller bores cover the higher pressures, larger bores correspondingly less.
• Housing material: plain brass, nickel plated brass, steel, stainless steel 1.4305 or white POM (Delrin), chosen by medium, corrosion load and weight.
• Sealant: NBR for mineral oil and normal temperatures, FKM where medium temperature reaches up to 200 °C.
• Overall length: allow 29.5 to 96 mm when the coupling sits inside a power unit or behind a cover.

Typical applications

• Machine and plant construction with hydraulic lines that are opened regularly
• Manufacturing industry, for example on clamping fixtures and tool change points
• Chemical and pharmaceutical plant using the stainless steel 1.4305 versions
• Automotive applications with changing test and filling points
• Food technology where lines are disconnected for cleaning

The couplings that shut off on both sides for liquid media follow ISO 7241 series B and are sealed with NBR or FKM. Production takes place in Germany, Sweden and Spain.