Can the Brass DN5 Quick-Connect Socket with Bulkhead Valve and Hose End, Series 21KA handle continuous operation at 35 bar and what maintenance is required?

Yes. The Brass DN5 Quick-Connect Socket with Bulkhead Valve and Hose End, Series 21KA is rated for a working pressure up to 35 bar and is specified to guarantee durability and safety in continuous use at that pressure. Its brass body, stainless-steel springs and balls, and NBR seals provide resistance to wear, corrosion and temperature fluctuations (-20°C to +100°C), supporting reliable continuous operation. Recommended maintenance: - Regular visual inspection for external damage, corrosion or wear (weekly to monthly depending on duty cycle). - Check seals and O-rings (NBR) for hardening, cracking or extrusion; replace proactively if aging or leaks appear (6–12 months typical; more frequent in harsh conditions). - Clean mating surfaces and internal passages from debris; flush with appropriate fluid or compressed air before reconnecting. - Inspect and, if necessary, replace stainless steel springs/balls if performance (sealing or locking) degrades. - Lubricate moving parts with a compatible lubricant that does not attack NBR, if manufacturer recommends. - Pressure-test after maintenance and after seal or component replacement. If operating continuously at maximum rating, shorten inspection intervals and keep spare seals/springs available. For critical applications, follow site-specific maintenance schedules and consider manufacturer service guidance.

Is the Brass DN5 Quick-Connect Socket with Bulkhead Valve and Hose End, Series 21KA compatible with food-grade fluids or potable water applications?

Brass DN5 Quick-Connect Socket with Bulkhead Valve and Hose End, Series 21KA is not specifically rated for food-grade fluids or potable water applications based on the provided description. Although it is made of brass with stainless steel springs/balls and NBR seals and offers good corrosion and temperature resistance, the description does not state any food-grade certifications (e.g., NSF/ANSI 61, WRAS, FDA compliance) or use of food-safe seal materials (such as EPDM or FDA-grade elastomers). NBR (nitrile) is not generally recommended for long-term potable water contact or certain food applications without explicit approval. For potable water or food-grade use you should request manufacturer documentation certifying materials and approvals, or select a coupling explicitly certified for drinking water and food-contact use.

Brass DN5 Quick-Connect Socket with Bulkhead Valve and Hose End, Series 21KA

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

Additional information

Material	B – brass (bronze)

The quick coupling socket with valve, Eurostandard DN5 (MINI), series 21KA, is a compact and highly efficient solution designed for demanding industrial applications where space-saving construction, reliable performance, and easy handling are essential. Available in two practical variants – with a corrugated hose end or with a nut end for thermoplastic hoses – this partition version is ideal for panel mounting, ensuring flexibility in installation. Engineered for one-handed operation, it delivers impressive flow rates of 560 l/min for air (Pe = 6 bar, Δp = 0.5 bar) and 8 l/min for water (Δp = 1 bar, Kv = 0.48), while maintaining a low pressure drop. With a working pressure of up to 35 bar, the socket guarantees durability and safety in continuous use. Manufactured from high-quality brass with stainless steel springs and balls, and sealed with NBR, it offers excellent resistance to wear, corrosion, and temperature fluctuations from -20°C to +100°C. This makes it a reliable and versatile choice for industries seeking compact yet powerful coupling solutions that combine efficiency, durability, and ease of use.

List of product variants

Article number	Product variant name	DN	BAR	Availability	Actions
RE-21KAKS06MPX	Quick coupling socket 21KA DN5, for hose 4x6 mm, partition, brass, NBR	4	35	In stock	Enquiry
RE-21KAKS08MPX	Quick coupling socket 21KA DN5, for hose 6x8 mm, partition, brass, NBR	6	35	In stock	Enquiry
RE-21KATS04MPX	Quick coupling socket 21KA DN5, for 4 mm hose, partition, brass, NBR	4	35	In stock	Enquiry
RE-21KATS06MPX	Quick coupling socket 21KA DN5, for 6 mm hose, partition, brass, NBR	6	35	In stock	Enquiry
RE-21KATS08MPX	Quick coupling socket 21KA DN5, for 8 mm hose, partition, brass, NBR	8	35	In stock	Enquiry
RE-21KATS10MPX	Quick coupling socket 21KA DN5, for 10 mm hose, partition, brass, NBR	10	35	In stock	Enquiry

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The quick coupling socket with valve, Eurostandard DN5 (MINI), series 21KA, is a compact and highly efficient solution designed for demanding industrial applications where space-saving construction, reliable performance, and easy handling are essential. Available in two practical variants – with a corrugated hose end or with a nut end for thermoplastic hoses – this partition version is ideal for panel mounting, ensuring flexibility in installation. Engineered for one-handed operation, it delivers impressive flow rates of 560 l/min for air (Pe = 6 bar, Δp = 0.5 bar) and 8 l/min for water (Δp = 1 bar, Kv = 0.48), while maintaining a low pressure drop. With a working pressure of up to 35 bar, the socket guarantees durability and safety in continuous use. Manufactured from high-quality brass with stainless steel springs and balls, and sealed with NBR, it offers excellent resistance to wear, corrosion, and temperature fluctuations from -20°C to +100°C. This makes it a reliable and versatile choice for industries seeking compact yet powerful coupling solutions that combine efficiency, durability, and ease of use.