Can the Screwed quick-connection socket with GZ NPT without valve, carbon steel, type HPA be disconnected under residual system pressure and what end caps are compatible?

Yes. The Screwed quick-connection socket with GZ NPT without valve, carbon steel, type HPA is designed for connection and disconnection even when residual system pressure is present. It is built for very high-pressure, high-mechanical-load applications (working pressure up to 700 bar) and uses NBR sealing. End caps are not included and must be ordered separately; choose caps compatible with the GZ NPT thread and the specific size (1/4" or 3/8") of the socket. Ensure the selected end caps are rated for the system pressure and compatible with carbon steel and NBR seals and operating temperature range (-25Â°C to +100Â°C).

Is the Screwed quick-connection socket with GZ NPT without valve, carbon steel, type HPA suitable for use in hydraulic presses and rescue equipment under high mechanical loads?

Yes. The Screwed quick-connection socket with GZ NPT without valve, carbon steel, type HPA is suitable for use in hydraulic presses and rescue equipment under high mechanical loads. It is specifically designed for very high pressures and significant mechanical stresses, rated to 700 bar working pressure with high burst pressures (up to 2100 bar connected for 1/4"), can be connected/disconnected under residual pressure, uses durable carbon steel with NBR seals, and operates from â25Â°C to +100Â°C. Ensure correct size/flow selection (1/4" or 3/8"), order end caps separately, and verify compatibility with your system and safety factors for your specific application.

What are the recommended maintenance intervals for the Screwed quick-connection socket with GZ NPT without valve, carbon steel, type HPA?

Recommended maintenance intervals for Screwed quick-connection socket with GZ NPT without valve, carbon steel, type HPA: - Daily / Before use: Visual inspection for external damage, corrosion, contamination and correct coupling engagement; check that end caps (if fitted) are present and clean. Confirm absence of leakage at working pressure during a brief functional test. - Weekly (or every 40â80 operating hours): Clean external surfaces and coupling faces; remove debris from sealing area; inspect threads and mating surfaces for wear or damage; check NBR seal condition for cuts, swelling or hardening. - Monthly (or every 200 operating hours): Perform pressure test at working pressure (700 bar) to verify no leakage and correct sealing under load; inspect for any deformation from mechanical loads; verify coupling/disconnection operation under residual pressure where applicable. - Quarterly (every 500â1000 operating hours depending on duty cycle): Replace NBR seals if signs of wear, aging or if operating near temperature/pressure limits; inspect internal components for wear, scoring or corrosion; check burst-pressure integrity history and any incidents of overpressure. - Annually (or every 2000 operating hours): Full service: disassemble, inspect all internal parts, replace seals and any worn components, clean and re-lubricate threads and moving parts with appropriate hydraulic-compatible lubricant; perform a proof pressure test above working pressure but within safety margins (consult manufacturer for exact value). - After any overload, impact, exposure above limits (temperature >+100Â°C or <â25Â°C), or suspected contamination: Immediate inspection and functional/pressure testing; replace seals or socket if damaged. Notes: Adjust intervals based on actual duty cycle, contamination level and severity of mechanical loads (high-load applications like presses or rescue equipment may require more frequent checks). Always follow safety procedures and manufacturer instructions for testing and replacement.

Screw-together quick-coupling socket with NPT male thread without a valve, carbon steel, type HPA

All products, UHP quick couplings/

Additional information

Material	CS – steel (cast iron)

The HPA screw-together socket of a hydraulic quick coupling, intended for installations at very high pressures with large mechanical loads. Used in hydraulic presses, rescue equipment, hydraulic lifts, cutters, etc. It can be connected / disconnected when residual pressure is present in the system. Caps should be ordered separately. Material: carbon steel. Sealing: NBR. Flow: 1/4″ – 16.4 l/min; (Δp=4 bar), 3/8″ – 21.3 l/min; (Δp = 4 bar). Working pressure: 700 bar. Burst pressure: 1/4″ – 2100 bar (coupling connected), 3/8″ – 1850 bar (coupling connected), 1/4″ – 1800 bar (socket disconnected), 3/8″ – 1850 bar (socket disconnected). Operating temperature: from -25°C to +100°C.

List of product variants

Article number	Product variant name	DN	BAR	Availability	Price	Quantity	Actions	Catalogue
HQ-HPA06-F-04NM	Socket screw-together HPA 1/4", 1/4" NPT male, seal nitryl	-	700	In stock	0 zł		Enquiry
HQ-HPA10-F-06NM	Socket screw-together HPA 3/8", 3/8" NPT male, seal nitryl	-	700	In stock	0 zł		Enquiry

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The HPA screw-together socket of a hydraulic quick coupling, intended for installations at very high pressures with large mechanical loads. Used in hydraulic presses, rescue equipment, hydraulic lifts, cutters, etc. It can be connected / disconnected when residual pressure is present in the system. Caps should be ordered separately. Material: carbon steel. Sealing: NBR. Flow: 1/4″ – 16.4 l/min; (Δp=4 bar), 3/8″ – 21.3 l/min; (Δp = 4 bar). Working pressure: 700 bar. Burst pressure: 1/4″ – 2100 bar (coupling connected), 3/8″ – 1850 bar (coupling connected), 1/4″ – 1800 bar (socket disconnected), 3/8″ – 1850 bar (socket disconnected). Operating temperature: from -25°C to +100°C.