Can the Safety coupling socket DN7.4, for air, swivel, non-pressurised disconnected, with thread, 12 bar be used with EURO DN7.2 steel plugs only, or are other plug materials compatible?

Safety coupling socket DN7.4, for air, swivel, non-pressurised disconnected, with thread, 12 bar is designed for plugs with the EURO DN7.2 profile. Although the description explicitly recommends using steel plugs (not brass), compatibility depends on matching the EURO DN7.2 profile and material suitability for the socketâs components and operating conditions. Steel plugs are recommended because they resist wear and deformation and match the socketâs stainless steel springs/balls and sealing (NBR) for reliable sealing and safe two-stage disconnection. Brass plugs are discouraged by the manufacturer and may wear faster or risk improper sealing; other materials (e.g. plastics, aluminum) are generally not recommended unless the manufacturer certifies them for DN7.2 profile, pressure (up to 12 bar), temperature range (â10Â°C to +90Â°C) and compatibility with NBR seals. For safe, reliable operation use EURO DN7.2 steel plugs or obtain explicit manufacturer approval before using alternative materials.

Is the Safety coupling socket DN7.4, for air, swivel, non-pressurised disconnected, with thread, 12 bar compatible with brass or other plug materials besides steel?

Safety coupling socket DN7.4, for air, swivel, non-pressurised disconnected, with thread, 12 bar Format is recommended for use with steel plugs and specifies that recommended plugs are made of steel (not brass). Although the plug profile is EURO DN7.2 standard, the manufacturer explicitly advises against brass plugs; therefore compatibility with brass is not recommended. Other materials may be usable if they match the EURO DN7.2 profile and meet mechanical, wear and sealing requirements (temperature, pressure, NBR sealing compatibility), but only steel plugs are recommended by the producer.

Are there size or profile limits for plugs used with the Safety coupling socket DN7.4, for air, swivel, non-pressurised disconnected, with thread, 12 bar?

Yes. Safety coupling socket DN7.4, for air, swivel, non-pressurised disconnected, with thread, 12 bar requires plugs with a profile compatible with the popular EURO standard DN7.2. Recommended plugs are made of steel (not brass). No other specific size or profile limits are stated in the product description, but use EURO DN7.2âcompatible steel plugs to ensure proper sealing and safe two-stage disconnection.

Socket quick coupling safe DN7.4, for air, swivel, disconnected without pressure, with a thread, 12 bar

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

Additional information

Material	CS – steel (cast iron)

Rotary socket with a shut-off valve, EWO series EW-411 SAFETY DN7.4, with a BSP male or female thread. A quick coupling for air, disconnected without pressure, fitted with a push-button locking mechanism. Compliant with ISO 4414 and EN 983 standards. The rotary version of the sockets allows the button to be easily set in a convenient position after screwing it to the installation. Disconnection occurs in two stages: the first press of the button vents the quick coupling with the plug secured. The second press releases the plug, which can then be safely removed. Plug with a profile compliant with the popular EURO DN7.2 standard. Steel plugs are recommended (not brass). Material: – socket body: outlet – galvanized steel, central part – anodized aluminum, inlet part – nickel-plated brass; – springs and balls of stainless steel. Flow rate: 1800 l/min (Pe = 6 bar, Δp = 1 bar, air). Working pressure: 12 bar. Operating temperature: from -10°C to +90°C. Sealing: NBR.

List of product variants

Article number	Product variant name	DN	BAR	Availability	Price	Quantity	Actions	Catalogue
EW-411-201	Quick coupling socket EW-411 SAFETY DN7.4 with 1/4" BSP male, swivel	-	12	In stock	0 zł		Enquiry
EW-411-202	Quick coupling socket EW-411 SAFETY DN7.4 with 1/4" BSP female, swivel	-	12	In stock	0 zł		Enquiry

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Rotary socket with a shut-off valve, EWO series EW-411 SAFETY DN7.4, with a BSP male or female thread. A quick coupling for air, disconnected without pressure, fitted with a push-button locking mechanism. Compliant with ISO 4414 and EN 983 standards. The rotary version of the sockets allows the button to be easily set in a convenient position after screwing it to the installation. Disconnection occurs in two stages: the first press of the button vents the quick coupling with the plug secured. The second press releases the plug, which can then be safely removed. Plug with a profile compliant with the popular EURO DN7.2 standard. Steel plugs are recommended (not brass). Material: – socket body: outlet – galvanized steel, central part – anodized aluminum, inlet part – nickel-plated brass; – springs and balls of stainless steel. Flow rate: 1800 l/min (Pe = 6 bar, Δp = 1 bar, air). Working pressure: 12 bar. Operating temperature: from -10°C to +90°C. Sealing: NBR.