Is the DN7.8 Quick-Connect Socket with Valve, Threaded Nickel-Plated Brass, Series 25KA compatible with Eurostandard DN7.2 couplings from other manufacturers?

Yes. The DN7.8 Quick-Connect Socket with Valve, Threaded Nickel-Plated Brass, Series 25KA is fully interchangeable with all Eurostandard DN7.2 quick couplings from other manufacturers. It offers both external BSPT and internal BSP thread options for flexible installation, features the high-flow ULTRA-FLOW valve, and delivers excellent performance (1800 l/min air at 6 bar; 33.5 l/min water at Δp=1 bar). Rated up to 35 bar and -20°C to +100°C, and made from nickel-plated brass, nickel-plated steel, nickel-plated zinc alloy, and stainless steel with NBR seals, it ensures compatibility, durability, and reliable sealing across compressed air, liquid, and gas applications.

Can the DN7.8 Quick-Connect Socket with Valve, Threaded Nickel-Plated Brass, Series 25KA be used safely with liquids other than water, such as oils or solvents, without degrading seals or materials?

The DN7.8 Quick-Connect Socket with Valve, Threaded Nickel-Plated Brass, Series 25KA can be used with liquids other than water, including some oils and non-aggressive solvents, but with important caveats. Its body materials (nickel-plated brass, nickel-plated steel/zinc alloy, stainless steel parts) offer good chemical and corrosion resistance for many industrial fluids. However, the seals are made of NBR (nitrile rubber), which has limited compatibility: it performs well with mineral oils, hydraulic oils, and many non-polar hydrocarbons, but degrades with strong polar solvents, ketones (e.g., acetone), some esters, aromatic hydrocarbons, and aggressive chemicals (acids, strong oxidizers). Temperature limits (-20°C to +100°C) and working pressure (up to 35 bar) must also be respected, as elevated temperatures and pressures accelerate seal aging and swelling with incompatible fluids. Recommendation: verify chemical compatibility of your specific fluid with NBR and the listed metals (consider additives, contaminants, and solvent strength). For aggressive solvents or higher chemical resistance needs, select couplings with compatible seals (e.g., FKM/Viton, EPDM, PTFE) or consult the manufacturer to confirm safe use and avoid premature seal failure or component corrosion.

DN7.8 Quick-Connect Socket with Valve, Threaded Nickel-Plated Brass, Series 25KA

All products, General-purpose low-pressure quick couplings/

Additional information

Material	B – brass (bronze)

The quick coupling socket with valve DN7.8 is designed for maximum efficiency and reliability, offering either an external BSPT thread or an internal BSP thread to ensure flexible installation. Its robust construction, combined with the innovative ULTRA-FLOW valve, guarantees an exceptionally high flow coefficient, making it a top choice for demanding industrial environments. Fully interchangeable with all Eurostandard DN7.2 quick couplings from other manufacturers, it provides seamless compatibility and versatility across a wide range of applications, including compressed air systems, liquids, and gases. Delivering impressive performance of 1800 l/min for air at 6 bar and 33.5 l/min for water at Δp=1 bar, this coupling ensures optimal flow with minimal pressure loss. With a working pressure of up to 35 bar and a temperature range from -20°C to +100°C, it is engineered to withstand challenging conditions. The use of premium materials such as nickel-plated brass, hardened nickel-plated steel, nickel-plated zinc alloy, and stainless steel components ensures durability, corrosion resistance, and long service life, while NBR sealing provides reliable tightness. This makes the coupling an ideal solution for industries seeking efficiency, safety, and long-term performance.

List of product variants

Article number	Product variant name	DN	BAR	Availability	Actions
RE-25KAAK13MPN	Quick coupling socket 25KA DN7.8, GZ 1/4" BSPT, nickel-plated brass, NBR	-	35	In stock	Enquiry
RE-25KAAK17MPN	Quick coupling socket 25KA DN7.8, GZ 3/8" BSPT, nickel-plated brass, NBR	-	35	In stock	Enquiry
RE-25KAAK21MPN	Quick coupling socket 25KA DN7.8, GZ 1/2" BSPT, nickel-plated brass, NBR	-	35	In stock	Enquiry
RE-25KAIW13MPN	Quick coupling socket 25KA DN7.8, GW 1/4" BSP, nickel-plated brass, NBR	-	35	In stock	Enquiry
RE-25KAIW17MPN	Quick coupling socket 25KA DN7.8, GW 3/8" BSP, nickel-plated brass, NBR	-	35	In stock	Enquiry
RE-25KAIW21MPN	Quick coupling socket 25KA DN7.8, GW 1/2" BSP, nickel-plated brass, NBR	-	35	In stock	Enquiry

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The quick coupling socket with valve DN7.8 is designed for maximum efficiency and reliability, offering either an external BSPT thread or an internal BSP thread to ensure flexible installation. Its robust construction, combined with the innovative ULTRA-FLOW valve, guarantees an exceptionally high flow coefficient, making it a top choice for demanding industrial environments. Fully interchangeable with all Eurostandard DN7.2 quick couplings from other manufacturers, it provides seamless compatibility and versatility across a wide range of applications, including compressed air systems, liquids, and gases. Delivering impressive performance of 1800 l/min for air at 6 bar and 33.5 l/min for water at Δp=1 bar, this coupling ensures optimal flow with minimal pressure loss. With a working pressure of up to 35 bar and a temperature range from -20°C to +100°C, it is engineered to withstand challenging conditions. The use of premium materials such as nickel-plated brass, hardened nickel-plated steel, nickel-plated zinc alloy, and stainless steel components ensures durability, corrosion resistance, and long service life, while NBR sealing provides reliable tightness. This makes the coupling an ideal solution for industries seeking efficiency, safety, and long-term performance.