Is the Bolt-on quick-connector, zinc-plated steel BSP GW plug, HOLMBURY, type HS safe to use at 50 bar installation pressure with hydraulic oil and NBR sealing?

Yes . Bolt-on quick-connector, zinc-plated steel BSP GW plug, HOLMBURY, type HS is safe to use at 50 bar with hydraulic oil and NBR sealing, provided normal operating conditions are met. Rationale: - The product description states the coupling can be screwed in under a maximum pressure of 50 bar. - Application explicitly lists hydraulic power (hydraulic oil). - Material is galvanized steel suitable for hydraulic use. - Socket sealing is NBR with an operating temperature range of â25Â°C to +100Â°C, compatible with typical hydraulic oil temperatures at 50 bar. - The couplingâs working pressure capability (up to 450 bar depending on size) and a 4:1 safety factor indicate 50 bar is well within safe limits. Notes/assumptions: - Ensure the specific size/version of type HS you have is assembled and maintained per manufacturer instructions. - Verify fluid temperature stays within the NBR range and that there are no aggressive additives incompatible with NBR. - Check thread compatibility and correct installation torque and that no damage or contamination is present.

Can the Bolt-on quick-connector, zinc-plated steel BSP GW plug, HOLMBURY, type HS be used for hydraulic oil applications with NBR seals at operating pressures up to 450 bar?

No. Bolt-on quick-connector, zinc-plated steel BSP GW plug, HOLMBURY, type HS cannot be assumed safe for hydraulic oil applications at operating pressures up to 450 bar when screwed under a maximum pressure of 50 bar. Although the overall socket family lists working pressures up to 450 bar (depending on size) and uses NBR seals suitable for hydraulic oil (-25Â°C to +100Â°C) with a 4:1 safety factor, the specific plug description states it can only be screwed on under a maximum pressure of 50 bar. That limitation means this specific plug installation is not rated for continuous operation at 450 bar. Use a size and configuration explicitly rated for 450 bar or consult the manufacturer for confirmation.

Can the Bolt-on quick-connector, zinc-plated steel BSP GW plug, HOLMBURY, type HS be used with hydraulic oil at varying temperatures from -25Â°C to +100Â°C?

Yes. The Bolt-on quick-connector, zinc-plated steel BSP GW plug, HOLMBURY, type HS is specified for hydraulic power (hydraulic oil) and uses NBR (nitrile) socket sealing with an operating temperature range of -25Â°C to +100Â°C. Therefore it is suitable for use with hydraulic oil across the stated temperature range. Notes and practical considerations: - Maximum coupling screw-in pressure is 50 bar; working pressure ratings up to 450 bar apply depending on the size of the quick couplingâensure the systemâs working pressure and chosen size are compatible. - NBR seals perform well with mineral-based hydraulic oils across -25Â°C to +100Â°C, but prolonged exposure near the temperature extremes or use with nonâstandard fluids (e.g., biodegradable oils, aggressive additives) may affect seal lifeâverify fluid compatibility if not using standard hydraulic oil. - Maintain proper installation and inspect seals regularly to ensure reliable operation under the stated temperature and pressure conditions.

Bolt-on quick-connector, zinc-plated steel BSP GW plug, HOLMBURY, type HS

All products, Hydraulic quick couplings/

Additional information

Material	CS – steel (cast iron)

Screw quick coupling – plug, type HS with internal BSP thread. Coupling can be screwed under a maximum pressure of 50 bar. Application: hydraulic power (hydraulic oil). Material: galvanized steel. Socket sealing: NBR (operating temperature from -25°C to +100°C). Working pressure: up to 450 bar (depending on the size of the quick coupling). Safety factor 4:1. Flow has been provided for a pressure drop of 3 bar.

List of product variants

Article number	Product variant name	DN	BAR	Availability	Actions
HQ-HS06-M-04G	HS 1/4" screw connector, 1/4" BSP female thread, nitrile seal	-	450	In stock	Enquiry
HQ-HS10-M-06G	HS 3/8" screw connector, 3/8" BSP female thread, nitrile seal	-	450	In stock	Enquiry
HQ-HS12-M-06G	HS 1/2" screw connector, 3/8" BSP female thread, nitrile seal	-	400	In stock	Enquiry
HQ-HS12-M-08G	HS 1/2" screw connector, 1/2" BSP female thread, nitrile seal	-	400	In stock	Enquiry
HQ-HS19-M-12G	HS 3/4" screw connector, 3/4" BSP female thread, nitrile seal	-	400	In stock	Enquiry
HQ-HS25-M-16G	HS 1" screw connector, 1" BSP thread, nitrile seal	-	300	In stock	Enquiry
HQ-HS32-M-20G	HS 1.1/4" screw connector, 1.1/4" BSP female thread, nitrile seal	-	300	In stock	Enquiry

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Screw quick coupling – plug, type HS with internal BSP thread. Coupling can be screwed under a maximum pressure of 50 bar. Application: hydraulic power (hydraulic oil). Material: galvanized steel. Socket sealing: NBR (operating temperature from -25°C to +100°C). Working pressure: up to 450 bar (depending on the size of the quick coupling). Safety factor 4:1. Flow has been provided for a pressure drop of 3 bar.