Can Screwed quick-connector with GW BSP, zinc-nickel coated carbon steel plug, HOLMBURY type HFT be tightened under residual pressure up to 350 bar without risk of leakage or unscrewing?

Yes. Screwed quick-connector with GW BSP, zinc-nickel coated carbon steel plug, HOLMBURY type HFT can be tightened under residual pressure up to 350 bar without risk of leakage or unscrewing. The product description explicitly permits tightening of quick couplings under residual pressure up to 350 bar, features a leak-free flat-face connection and an additional O-ring on the socket body to prevent unscrewing from vibrations. Materials, sealing (NBR) and coatings support high-pressure, corrosion-resistant service; working pressure ratings go up to 550 bar depending on size. Ensure the correct HFT size and proper installation to meet the stated limits.

Can Screwed quick-connector with GW BSP, zinc-nickel coated carbon steel plug, HOLMBURY type HFT be used safely in BOP systems per API 16D?

Yes. Screwed quick-connector with GW BSP, zinc-nickel coated carbon steel plug, HOLMBURY type HFT can be used safely in BOP systems per API 16D based on the provided description: it explicitly states compliance with API 16D (for BOP applications), offers a leak-free flat-face design, additional O-ring to prevent unscrewing under vibration, permitted tightening under residual pressure up to 350 bar, and working pressure up to 550 bar depending on size. Materials and sealing (zinc-nickel coated carbon steel, NBR) and temperature range (â40Â°C to +106Â°C) are compatible with typical BOP requirements. Ensure selection of the correct size/rating for system pressure, verify compatibility with media and temperature, and follow API 16D installation, testing and maintenance procedures.

Is the Screwed quick-connector with GW BSP, zinc-nickel coated carbon steel plug, HOLMBURY type HFT suitable for high-pressure pulse applications?

Yes. The Screwed quick-connector with GW BSP, zinc-nickel coated carbon steel plug, HOLMBURY type HFT is suitable for high-pressure pulse applications. The series HFT is explicitly described as "used in applications with high pressure spikes" and offers a working pressure up to 550 bar (depending on size). It features a leak-free flat-face design, NBR sealing, and an additional O-ring on the socket body to prevent unscrewing from vibrationsâimportant for pulse and shock environments. Tightening under residual pressure up to 350 bar is permitted. The zinc-nickel coating and carbon steel construction provide enhanced corrosion resistance and mechanical durability, and the product complies with API 16D (BOP) standards, further supporting use in demanding high-pressure conditions. Operating temperature range is â40Â°C to +106Â°C; ensure this and the specific coupling size meet your application's pressure, pulse frequency, and fluid/temperature requirements.

A screw-together quick coupling with female thread BSP, plug of zinc-nickel coated carbon steel, HOLMBURY type HFT

All products, Hydraulic quick couplings/

Additional information

Material	CS – steel (cast iron)

The HFT series screw-together quick-coupling plug with a BSP female thread. A leak-free flat-face coupling. Used for applications with high pressure impulses. They have an additional O-ring on the socket body, which prevents unscrewing in case of vibration. The quick couplings may be connected under residual pressure up to 350 bar. The quick couplings have a zinc-nickel coating, which provides several times greater corrosion resistance than a zinc coating. Compliant with the API 16D standard (intended for BOP applications). Material: zinc-nickel coated carbon steel. Sealing: NBR. Operating temperature: from -40°C to +106°C. Working pressure: up to 550 bar (depending on the quick-coupling size). The flow is given for a pressure drop of 3 bar.

List of product variants

Article number	Product variant name	DN	BAR	Availability	Actions
HQ-HFT10-M-06G	Plug screw-together FF HFT DN10 with 3/8" female, seal NBR	-	550	In stock	Enquiry
HQ-HFT10-M-08G	Plug screw-together FF HFT DN10 with 1/2" female, seal NBR	-	550	In stock	Enquiry
HQ-HFT12-M-08G	Plug screw-together FF HFT DN12 with 1/2" female, seal NBR	-	550	In stock	Enquiry
HQ-HFT12-M-12G	Plug screw-together FF HFT DN12 with 3/4" female, seal NBR	-	550	In stock	Enquiry
HQ-HFT16-M-12G	Plug screw-together FF HFT DN16 with 3/4" female, seal NBR	-	550	In stock	Enquiry
HQ-HFT19-M-16G	Plug screw-together FF HFT DN19 with 1" female, seal NBR	-	500	In stock	Enquiry
HQ-HFT25-M-20G	Plug screw-together FF HFT DN25 with 1.1/4" female, seal NBR	-	470	In stock	Enquiry
HQ-HFT32-M-24G	Plug screw-together FF HFT DN32 with 1.1/2" female, seal NBR	-	400	In stock	Enquiry

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The HFT series screw-together quick-coupling plug with a BSP female thread. A leak-free flat-face coupling. Used for applications with high pressure impulses. They have an additional O-ring on the socket body, which prevents unscrewing in case of vibration. The quick couplings may be connected under residual pressure up to 350 bar. The quick couplings have a zinc-nickel coating, which provides several times greater corrosion resistance than a zinc coating. Compliant with the API 16D standard (intended for BOP applications). Material: zinc-nickel coated carbon steel. Sealing: NBR. Operating temperature: from -40°C to +106°C. Working pressure: up to 550 bar (depending on the quick-coupling size). The flow is given for a pressure drop of 3 bar.