Is the Brass Quick Release Coupling DN2.7 with Valve and Hose End, Series 20KA suitable for use with potable water and food-grade gases?

Brass Quick Release Coupling DN2.7 with Valve and Hose End, Series 20KA is specified for use with water, air, nitrogen and other non‑flammable gases. Its double shut‑off valves (in both socket and plug), brass body, stainless steel components (AISI 301/420) and NBR seals provide reliable leak prevention and durability. Temperature range (‑20°C to +100°C) and working pressure up to 35 bar are suitable for many potable water and food‑grade gas applications; however, the description does not explicitly state certification for potable water or food‑contact use (e.g., NSF/ANSI, WRAS, ACS) nor qualification for food‑grade gases (e.g., food‑grade lubricant/ointment compatibility or specific material food approvals). Conclusion: Functionally suitable for potable water and food‑grade non‑flammable gases from a performance and materials standpoint, but you should confirm required regulatory/food‑contact certifications with the manufacturer before using it in certified potable water systems or food/gas applications.

Can the Brass Quick Release Coupling DN2.7 with Valve and Hose End, Series 20KA be used with oxygen or other oxidizing gases?

No. The Brass Quick Release Coupling DN2.7 with Valve and Hose End, Series 20KA is specified for water, air, nitrogen, and other non-flammable gases. It is not qualified for oxygen or other oxidizing gases. Materials (brass, AISI 301/420 steel and NBR seals) and the product description do not meet the special cleanliness, material compatibility and safety requirements for oxygen service. Using it with oxygen or oxidizers could create fire/explosion hazards or cause material degradation. For oxygen applications, use couplings specifically certified and cleaned for oxygen service.

Brass Quick Release Coupling DN2.7 with Valve and Hose End, Series 20KA

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

Additional information

Material	B – brass (bronze)

The quick-release coupling plug series 20KA DN 2.7 is a compact and highly efficient solution designed for demanding applications with water, air, nitrogen, and other non-flammable gases. Equipped with a double shut-off system, it ensures maximum safety and reliability by integrating valves both in the socket and in the plug, preventing any unwanted leakage during connection or disconnection. Available in two practical variants—one with a corrugated hose end and another with a nut end for thermoplastic hoses—it offers flexibility for diverse installation needs. With a flow rate of 165 l/min at 6 bar for air and 3 l/min at 1 bar for water, this coupling guarantees excellent performance even in intensive operating conditions. Built from durable brass with high-quality AISI 301 and AISI 420 steel components, and sealed with robust NBR material, it withstands working pressures up to 35 bar and temperatures ranging from -20°C to +100°C. Compact in size yet powerful in functionality, the 20KA plug is the perfect choice for industries seeking reliability, safety, and efficiency in fluid and gas transfer systems.

List of product variants

Article number	Product variant name	DN	BAR	Availability	Actions
RE-20SBKO04MPX	Quick coupling plug 20SB DN2.7, for hose 3x4 mm, brass, NBR	3	35	In stock	Enquiry
RE-20SBKO05MPX	Quick coupling plug 20SB DN2.7, for hose made of 3x5 mm, brass, NBR	3	35	In stock	Enquiry
RE-20SBKO06MPX	Quick coupling plug 20SB DN2.7, for hose 4x6 mm, brass, NBR	4	35	In stock	Enquiry
RE-20SBTF04MPX	Quick coupling plug 20SB DN2.7, for 4 mm hose, brass, NBR	4	35	In stock	Enquiry

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The quick-release coupling plug series 20KA DN 2.7 is a compact and highly efficient solution designed for demanding applications with water, air, nitrogen, and other non-flammable gases. Equipped with a double shut-off system, it ensures maximum safety and reliability by integrating valves both in the socket and in the plug, preventing any unwanted leakage during connection or disconnection. Available in two practical variants—one with a corrugated hose end and another with a nut end for thermoplastic hoses—it offers flexibility for diverse installation needs. With a flow rate of 165 l/min at 6 bar for air and 3 l/min at 1 bar for water, this coupling guarantees excellent performance even in intensive operating conditions. Built from durable brass with high-quality AISI 301 and AISI 420 steel components, and sealed with robust NBR material, it withstands working pressures up to 35 bar and temperatures ranging from -20°C to +100°C. Compact in size yet powerful in functionality, the 20KA plug is the perfect choice for industries seeking reliability, safety, and efficiency in fluid and gas transfer systems.