Series 526 is a family of quick couplings for hydraulic systems. A manually operated locking ring provides extra security against involuntary disconnection. All parts in both couplings and nipples are made of stainless steel for maximum durability in tough applications and environments.

The Series is also available in four other sizes: DN 10, DN 12.5, DN 20 and DN 25. For a steel version see Series 525.

Download drawings/3dmodels

Technical data
Nominal flow diameter:	1/4" (6.3 mm)
Rated flow:	7.7 GPM (29 l/min)
Max. working pressure connected:	3630 PSI (250 bar)
Max. working pressure disconnected:	3630 PSI (250 bar)
Min. burst pressure connected:	14500 PSI (1000 bar)
Min. burst pressure disconnected:	14500 PSI (1000 bar)
Temperature range:	-4°F — +401°F (-20°C — +205°C)
Material coupling:	Stainless steel, AISI 316
Material nipple:	Stainless steel, AISI 316
Material seal:	Viton (FPM)
Connectability:	Without pressure
Disconnection under pressure:	Not allowed

Rated flow is measured at 58 PSI pressure drop.

Pressure drop chart

Pressure drop, PSI

Flow, GPM

Couplings	Part No.	Connection	Length	Diameter	Hexagon	Seal
Female thread	105261212	G 1/4"	60	26	21	FPM

Nipples	Part No.	Connection	Length	Diameter	Hexagon	Seal
Female thread	105266212	G 1/4"	48.2	21	19	FPM

Thread connections are listed according to ISO Standards. All measurements are in mm. Check with an authorized CEJN distributor for availability and prices.

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Series 526, DN6.3

Hydraulic Products

Nordic Range Stainless Steel Couplings & Nipples

Series 526, DN6.3

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