Is the Screwed quick-connector, socket with METRIC GZ (DIN 2353) in zinc-nickel coated carbon steel, HOLMBURY type RH compatible with hydraulic oil at -25Â°C to +100Â°C under residual pressure 50 bar?

Yes. The Screwed quick-connector, socket with METRIC GZ (DIN 2353) in zinc-nickel coated carbon steel, HOLMBURY type RH is compatible with hydraulic oil at -25Â°C to +100Â°C under residual pressure 50 bar. Rationale: the product specification lists application as hydraulic power (hydraulic oil), socket sealing material NBR, and operating temperature range â25Â°C to +100Â°C. The coupling is explicitly allowed for connection/disconnection under residual pressure of 50 bar and has working pressure ratings up to 420 bar (size-dependent), so service at 50 bar residual pressure within the stated temperature range is within its specified limits.

Screwed quick-connector, socket with METRIC GZ (DIN 2353) in zinc-nickel coated carbon steel, HOLMBURY type RH

Q: Can the Screwed quick-connector, socket with METRIC GZ (DIN 2353) in zinc-nickel coated carbon steel, HOLMBURY type RH be used for hydraulic systems up to 420 bar?

Yes. Screwed quick-connector, socket with METRIC GZ (DIN 2353) in zinc-nickel coated carbon steel, HOLMBURY type RH can be used in hydraulic systems up to 420 bar, provided the specific coupling size selected is rated for that working pressure. It is designed for hydraulic oil, has NBR sealing, an operating temperature range â25Â°C to +100Â°C, and allows connection under residual pressure up to 50 bar. Ensure you choose the correct size (pressure rating varies by size) and verify compatibility with your system fluid and temperature.

All products, Hydraulic quick couplings/

Additional information

Material	CS – steel (cast iron)

Screw quick coupling with zero leakage – socket, type RH, with external metric thread DIN 2353. The flat design of the front surface prevents fluid loss during disconnection. Coupling is allowed under residual pressure of 50 bar. Application: hydraulic power (hydraulic oil). Material: carbon steel with zinc-nickel coating. Socket sealing: NBR. Operating temperature: from -25°C to +100°C. Working pressure: up to 420 bar (depending on the size of the quick coupling). Flow has been provided for a pressure drop of 3 bar.

List of product variants

Article number	Product variant name	Nominal inner diameter	Working pressure [bar]
HQ-RH12-F-15L	Screw socket RH 1/2", GZ M22x1.5 (15L)	-	420
HQ-RH12-F-16S	Screw socket RH 1/2", GZ M24x1.5 (16S)	-	420
HQ-RH20-F-30S	Screw socket RH 3/4", GZ M42x2 (30S)	-	350

Screw quick coupling with zero leakage – socket, type RH, with external metric thread DIN 2353. The flat design of the front surface prevents fluid loss during disconnection. Coupling is allowed under residual pressure of 50 bar. Application: hydraulic power (hydraulic oil). Material: carbon steel with zinc-nickel coating. Socket sealing: NBR. Operating temperature: from -25°C to +100°C. Working pressure: up to 420 bar (depending on the size of the quick coupling). Flow has been provided for a pressure drop of 3 bar.