Can the Screwed Quick-Connector Plug with Metric FG, Light Series DIN 2353, Galvanized Steel HS be tightened safely under residual pressure up to 50 bar?

Yes. The Screwed Quick-Connector Plug with Metric FG, Light Series DIN 2353, Galvanized Steel HS can be tightened safely under residual pressure up to 50 bar. The product description explicitly states the coupling allows safe tightening under residual pressure up to 50 bar, while offering a working pressure up to 450 bar (depending on size) and a 4:1 safety factor. Ensure the correct size and proper installation procedures are followed and that the NBR sealing element and threads are in good condition before use.

Is the Screwed Quick-Connector Plug with Metric FG, Light Series DIN 2353, Galvanized Steel HS compatible with hydraulic oils across its full temperature range (-25°C to +100°C)?

Yes. The Screwed Quick-Connector Plug with Metric FG, Light Series DIN 2353, Galvanized Steel HS is compatible with hydraulic oils across its full stated temperature range (-25°C to +100°C). The product uses an NBR (nitrile rubber) sealing element, which is specified in the description as providing secure, leak-free operation within that temperature span. NBR is commonly used for hydraulic oil applications and offers good resistance to mineral hydraulic oils over the given temperature range, supporting reliable sealing and performance. Ensure the specific hydraulic fluid used is a standard mineral-based oil and verify any extreme additive packages or synthetic fluids with the manufacturer if in doubt.

Screwed Quick-Connector Plug with Metric FG, Light Series DIN 2353, Galvanized Steel HS

All products, Hydraulic quick couplings/

Additional information

Material	CS – steel (cast iron)

The screw-on quick coupling plug type HS with external metric thread according to DIN 2353 (light series) is a reliable solution designed for demanding hydraulic applications. Manufactured from high-quality galvanized steel, it ensures durability and resistance to wear, while the NBR sealing element guarantees secure and leak-free operation within a wide temperature range from -25°C to +100°C. The coupling allows safe tightening even under residual pressure up to 50 bar, offering flexibility and efficiency in daily use. With a working pressure capacity of up to 450 bar, depending on the size, and a safety factor of 4:1, it provides maximum operational security and long service life. Optimized flow characteristics ensure minimal pressure loss, with performance calculated for a pressure drop of only 3 bar, making it an excellent choice for hydraulic power transmission with hydraulic oil. This robust and efficient quick coupling is ideal for professionals seeking reliability, safety, and consistent performance in high-pressure hydraulic systems.

List of product variants

Article number	Product variant name	Nominal inner diameter	Working pressure [bar]
HQ-HS06-M-08L	HS 1/4" screw connector with GZ M14x1.5 (8L), nitrile seal	-	450
HQ-HS10-M-10L	HS 3/8" screw connector with GZ M16x1.5 (10L), nitrile seal	-	450
HQ-HS12-M-12L	HS 1/2" screw connector with GZ M18x1.5 (12L), nitrile seal	-	400
HQ-HS12-M-15L	HS 1/2" screw connector with GZ M22x1.5 (15L), nitrile seal	-	400
HQ-HS19-M-22L	HS 3/4" screw connector with GZ M30x2 (22L), nitrile seal	-	400
HQ-HS25-M-28L	HS 1" screw connector with GZ M36x2 (28L), nitrile seal	-	300
HQ-HS32-M-35L	HS 1.1/4" screw connector with GZ M45x2 (35L), nitrile seal	-	300

The screw-on quick coupling plug type HS with external metric thread according to DIN 2353 (light series) is a reliable solution designed for demanding hydraulic applications. Manufactured from high-quality galvanized steel, it ensures durability and resistance to wear, while the NBR sealing element guarantees secure and leak-free operation within a wide temperature range from -25°C to +100°C. The coupling allows safe tightening even under residual pressure up to 50 bar, offering flexibility and efficiency in daily use. With a working pressure capacity of up to 450 bar, depending on the size, and a safety factor of 4:1, it provides maximum operational security and long service life. Optimized flow characteristics ensure minimal pressure loss, with performance calculated for a pressure drop of only 3 bar, making it an excellent choice for hydraulic power transmission with hydraulic oil. This robust and efficient quick coupling is ideal for professionals seeking reliability, safety, and consistent performance in high-pressure hydraulic systems.