Is the Quick connector DN12 double shut-off, with hose end, nickel-plated brass, series 57KB compatible with both liquids and gases at 35 bar working pressure?

Yes. Quick connector DN12 double shut-off, with hose end, nickel-plated brass, series 57KB is specified for liquid and gas media and has a working pressure of 35 bar, so it is compatible with both liquids and gases at that working pressure. Construction details supporting this: nickelâplated brass body, NBR sealing, operating temperature â20Â°C to +100Â°C, and manufacturer flow/performance data given for both air and water. Ensure compatibility with the specific fluid (chemical compatibility with NBR and brass) and application conditions (temperature, transient pressure spikes, and safety margins) before use.

Quick connector DN12 double shut-off, with hose end, nickel-plated brass, series 57KB

Q: Can the Quick connector DN12 double shut-off, with hose end, nickel-plated brass, series 57KB handle 3300 l/min air at Pe=6 bar?

Yes. The Quick connector DN12 double shut-off, with hose end, nickel-plated brass, series 57KB can handle 3300 l/min of air at Pe = 6 bar, because the product specification lists a flow rate of 3300 l/min at Pe = 6 bar (Îp = 0.5 bar) for air. Operating limits (working pressure 35 bar, sealing NBR, temperature â20Â°C to +100Â°C) are compatible with that condition.

Q: Does the Quick connector DN12 double shut-off, with hose end, nickel-plated brass, series 57KB require special maintenance for NBR seals?

No special maintenance is required for the NBR seals in the Quick connector DN12 double shut-off, with hose end, nickel-plated brass, series 57KB beyond standard good-practice care. NBR (nitrile) is compatible with the specified operating range and media if used within the given limits: pressure up to 35 bar and temperature from -20Â°C to +100Â°C. To ensure long service life, follow these recommendations: - Avoid prolonged exposure to temperatures near or above +100Â°C and below -20Â°C to prevent accelerated hardening, cracking or loss of elasticity. - Keep seals clean and free of grit, debris and aggressive contaminants that can cause abrasion or cutting. - Use fluids compatible with NBR (hydrocarbons, oils, water-based media); avoid strong oxidizers, concentrated ketones, and certain solvents that can swell or degrade NBR. - Periodically inspect seals for wear, swelling, cuts or leakageâespecially after heavy use at high flow (Kv 4.4) or high pressure. - Light lubrication with a compatible NBR-safe lubricant (e.g., silicone-free, NBR-compatible grease) can ease assembly and reduce wear; avoid petroleum-based lubricants unless confirmed compatible. - Replace seals when signs of aging or damage appear or during scheduled maintenance intervals. Following these standard steps will maintain reliable performance of the Quick connector DN12 double shut-off, with hose end, nickel-plated brass, series 57KB without special or unusual maintenance procedures.

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

Additional information

Material	B – brass (bronze)
Standard length [m]	10

Quick coupling plug DN12 with valve, with hose end, series 57 KB, high flow rate, for liquid and gas media. Working pressure: 35 bar. Flow rate: 3300 l/min, Pe=6 bar, Δp=0.5 bar – air, 73.5 l/min, Δp=1 bar, Kv=4.4 – water. Material: nickel-plated brass. Sealing: NBR. Operating temperature: from -20°C to +100°C.

List of product variants

Article number	Product variant name	DN	BAR	Availability	Actions
RE-57SBTF13MPN	Quick coupling plug 57SB DN12, with valve, for 13 mm hose, nickel-plated brass, NBR	12	35	In stock	Enquiry
RE-57SBTF16MPN	Quick coupling plug 57SB DN12, with valve, for 16 mm hose, nickel-plated brass, NBR	16	35	In stock	Enquiry
RE-57SBTF19MPN	Quick coupling plug 57SB DN12, with valve, for hose 19 mm, nickel-plated brass, NBR	20	35	In stock	Enquiry

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Quick coupling plug DN12 with valve, with hose end, series 57 KB, high flow rate, for liquid and gas media. Working pressure: 35 bar. Flow rate: 3300 l/min, Pe=6 bar, Δp=0.5 bar – air, 73.5 l/min, Δp=1 bar, Kv=4.4 – water. Material: nickel-plated brass. Sealing: NBR. Operating temperature: from -20°C to +100°C.