Is the Full-flow quick coupling plug with GZ BSPT, NITTO KOHKI TSP CUPLA, carbon steel suitable for lubricants and high-viscosity fluids?

Yes. The Full-flow quick coupling plug with GZ BSPT, NITTO KOHKI TSP CUPLA, carbon steel is suitable for lubricants and other highâviscosity fluids. Itâs explicitly recommended for highâviscosity media (such as lubricants) and is designed for water, hydraulic oils, steam, chemicals, air and gases. Constructed from carbon steel with robust durability, it supports working pressures up to 75 bar on smaller sizes and lower pressures on larger sizes (see spec), and an NBR sealing range of â20Â°C to +80Â°C.suitable for many lubricant applications. Ensure the chosen size meets your system pressure and temperature, and verify fluid compatibility with NBR at your operating temperature.

Can the Full-flow quick coupling plug with GZ BSPT, NITTO KOHKI TSP CUPLA, carbon steel be used with steam and aggressive chemicals?

Yes. The Full-flow quick coupling plug with GZ BSPT, NITTO KOHKI TSP CUPLA, carbon steel is specified for steam and chemicals. It is designed for water, hydraulic oils, steam, chemicals, air and gases, and is particularly suited for highâviscosity fluids. Operating limits: working pressure up to 75 bar (sizes 1/8", 1/4", 3/8") down to 20 bar (2"), and temperature range â20Â°C to +80Â°C with NBR seals. For aggressive chemicals or temperatures near limits, verify chemical compatibility with carbon steel and NBR seals and confirm required pressure/temperature ratings for your specific application.

Does the Full-flow quick coupling plug with GZ BSPT, NITTO KOHKI TSP CUPLA, carbon steel require specific seals for elevated temperatures?

Full-flow quick coupling plug with GZ BSPT, NITTO KOHKI TSP CUPLA, carbon steel requires consideration of seal material for elevated temperatures. Standard operating temperature listed is -20Â°C to +80Â°C using NBR (nitrile) seals. NBR performs well up to ~+80Â°C but degrades above that, especially with steam, certain chemicals or prolonged exposure to heat. If your application will exceed +80Â°C, or involves aggressive chemicals or high-temperature steam, you should specify alternative seal materials such as: - FKM/Viton: good to ~+200Â°C, chemical and heat resistant. - EPDM: suitable to ~+120Â°C, good for steam and hot water but poor with oils/solvents. - PTFE (with backup O-ring): excellent temperature and chemical resistance, low friction; may require special design or energizing rings for sealing with low pressures. Also verify compatibility of carbon steel body with your media and temperature cycles, and confirm working pressure ratings at elevated temperatures with the manufacturer. For critical or high-temperature steam service, consult Nitto Kohki or supplier to select the correct seal compound and any installation/maintenance notes.

Full-flow quick coupling plug with GZ BSPT, NITTO KOHKI TSP CUPLA, carbon steel

All products, General-purpose low-pressure quick couplings/

Additional information

Material	CS – steel (cast iron)

Full-flow quick coupling plug Nitto Kohki series TSP CUPLA with external BSPT thread, featuring excellent durability, designed for water, hydraulic oils, steam, chemicals, air, and gases. Particularly recommended for high-viscosity fluids such as lubricants. Material: carbon steel. Working pressure: 75 bar (1/8″, 1/4″, 3/8″), 45 bar (1/2″, 3/4″, 1″), 30 bar (1.1/4″, 1.1/2″), 20 bar (2″). Operating temperature: from -20°C to +80°C (NBR).

List of product variants

Article number	Product variant name	DN	BAR	Availability	Actions
NK-10TPM-S	TSP CUPLA quick coupling plug, GZ BSPT 1.1/4", nickel-plated steel	-	30	In stock	Enquiry
NK-12TPM-S	TSP CUPLA quick coupling plug, GZ BSPT 1.1/2", nickel-plated steel	-	30	In stock	Enquiry
NK-16TPM-S	TSP CUPLA quick coupling plug, GZ BSPT 2", nickel-plated steel	-	20	In stock	Enquiry
NK-2TPM-S	TSP CUPLA quick coupling plug, GZ BSPT 1/4", nickel-plated steel	-	75	In stock	Enquiry
NK-3TPM-S	TSP CUPLA quick coupling plug, GZ BSPT 3/8", nickel-plated steel	-	75	In stock	Enquiry
NK-4TPM-S	TSP CUPLA quick coupling plug, GZ BSPT 1/2", nickel-plated steel	-	45	In stock	Enquiry
NK-6TPM-S	TSP CUPLA quick coupling plug, GZ BSPT 3/4", nickel-plated steel	-	45	In stock	Enquiry
NK-8TPM-S	TSP CUPLA quick coupling plug, GZ BSPT 1", nickel-plated steel	-	45	In stock	Enquiry

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Full-flow quick coupling plug Nitto Kohki series TSP CUPLA with external BSPT thread, featuring excellent durability, designed for water, hydraulic oils, steam, chemicals, air, and gases. Particularly recommended for high-viscosity fluids such as lubricants. Material: carbon steel. Working pressure: 75 bar (1/8″, 1/4″, 3/8″), 45 bar (1/2″, 3/4″, 1″), 30 bar (1.1/4″, 1.1/2″), 20 bar (2″). Operating temperature: from -20°C to +80°C (NBR).