Can the Air outlet coupling, double shut-off, DN7.2 Eurostandard, with hose connection, 16 bar be safely used with non-brass fittings or fluids other than air/nitrogen?

Short answer: No . not recommended. Explanation: The Air outlet coupling, double shut-off, DN7.2 Eurostandard, with hose connection, 16 bar is specified and designed for pneumatic installations (air, nitrogen, other nonâflammable gases). Materials and seals are brass body, stainless steel pins and spring, and NBR sealing. These components and the doubleâshutoff valve arrangement are optimized for gases; compatibility with nonâbrass fittings or with fluids other than specified gases is not guaranteed. Risks and reasons: - Dissimilar metals: Using nonâbrass fittings (e.g. steel, aluminum, or plated parts) can cause galvanic corrosion, increased wear, leakage, or seizure of the quickârelease mechanism. - Seal compatibility: NBR (nitrile) seals are suitable for air and many oils, but they are incompatible with numerous fluids (strong solvents, fuels, certain hydraulic oils, aggressive chemicals) which can swell, harden or degrade the sealing, causing leaks or failure. - Valve operation: The double shutâoff design and pressure/flow characteristics were tested with gases (flow rate 734 l/min at Pe=6 bar). Liquids introduce different flow dynamics and may prevent proper valve opening/closing or cause fluid retention. - Safety: Working pressure is 16 bar and easy oneâhand operation is assured up to 8 bar for gases; using other media may create unforeseen hazards (leakage, contamination, valve sticking) and is unsafe without specific validation. Recommendation: Use only with air, nitrogen and other nonâflammable gases as specified, and only with compatible brass or manufacturerâapproved fittings. For other fluids or nonâbrass fittings, consult the manufacturer for compatibility data or select a coupling specifically rated and certified for the intended fluid and materials.

Air outlet coupling, double shut-off, DN7.2 Eurostandard, with hose connection, 16 bar

Q: Is the Air outlet coupling, double shut-off, DN7.2 Eurostandard, with hose connection, 16 bar compatible with single shut-off couplers?

No - Air outlet coupling, double shut-off, DN7.2 Eurostandard, with hose connection, 16 bar is not compatible with single shut-off couplers. The description states the double shut-off version has valves in both socket and plug and it is not permissible to connect single shut-off with double shut-off because the valve will not open.

Q: Does the Air outlet coupling, double shut-off, DN7.2 Eurostandard, with hose connection, 16 bar require specific maintenance?

Yes. the Air outlet coupling, double shut-off, DN7.2 Eurostandard, with hose connection, 16 bar requires basic, regular maintenance to ensure safe, leakâfree and long service life. Recommended maintenance points: - Regular inspection: check external condition, coupling and hose connection for damage, corrosion (brass) or wear. Inspect stainless steel pins/spring for deformation. - Seal check and replacement: inspect NBR sealing regularly for cuts, hardening or swelling; replace if any damage or leakage appears. - Functional test: connect/disconnect periodically to ensure both valves operate and open/close smoothly; do not attempt to mate doubleâshutâoff with singleâshutâoff (valve wonât open). - Cleanliness: keep coupling and plug free of dirt, dust and debris; blow out with dry, oilâfree air before connection if contaminated. Avoid aggressive solvents that can damage NBR. - Lubrication: if recommended by manufacturer, use compatible lubricants sparingly on moving parts; avoid oil/grease that degrades NBR or attracts contaminants. - Pressure and temperature limits: do not exceed 16 bar working pressure (hand operation rated up to 8 bar) and keep within â20Â°C to +100Â°C operating temperature. - Leak test: perform periodic pressure/flow checks (e.g., at operating pressure like 6 bar) to confirm flow rate and absence of leaks. - Replace worn components: replace any damaged coupling, plug, seals or springs promptly to maintain safety with compressed air, nitrogen or other nonâflammable gases. Record maintenance and replace assemblies according to usage intensity or any sign of malfunction.

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

Additional information

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

Quick-release socket with double shut-off, featuring a popular Eurostandard DN7.2 profile with a valve, equipped with a hose coupling, for use in pneumatic installations (air, nitrogen, other non-flammable gases). The double shut-off version has a valve in both the socket and the plug, and it is not permissible to connect the single shut-off version with the double shut-off version, as the valve will not open. Easily operated with one hand up to a pressure of 8 bar. Working pressure: 16 bar. Material: brass (pins and spring made of stainless steel). Sealing: NBR. Flow rate: 734 l/min, Pe=6 bar, Δp=1 bar (air). Operating temperature: from -20°C to +100°C.

List of product variants

Article number	Product variant name	DN	BAR	Availability	Actions
TP-ES72D-GK-06X	Quick coupling socket DN7.2 double shut-off, for 6 mm hose, brass	6	16	In stock	Enquiry
TP-ES72D-GK-08X	Quick coupling socket DN7.2 double shut-off, for 8 mm hose, brass	8	16	In stock	Enquiry
TP-ES72D-GK-09X	Quick coupling socket DN7.2 double shut-off, for 9 mm hose, brass	8	16	In stock	Enquiry
TP-ES72D-GK-10X	Quick coupling socket DN7.2 double shut-off, for 10 mm hose, brass	10	16	In stock	Enquiry
TP-ES72D-GK-13X	Quick coupling socket DN7.2 double shut-off, for 13 mm hose, brass	12	16	In stock	Enquiry

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Quick-release socket with double shut-off, featuring a popular Eurostandard DN7.2 profile with a valve, equipped with a hose coupling, for use in pneumatic installations (air, nitrogen, other non-flammable gases). The double shut-off version has a valve in both the socket and the plug, and it is not permissible to connect the single shut-off version with the double shut-off version, as the valve will not open. Easily operated with one hand up to a pressure of 8 bar. Working pressure: 16 bar. Material: brass (pins and spring made of stainless steel). Sealing: NBR. Flow rate: 734 l/min, Pe=6 bar, Δp=1 bar (air). Operating temperature: from -20°C to +100°C.