Is the Full-flow quick coupling socket with GZ BSPT, NITTO KOHKI TSP CUPLA, brass compatible with hydraulic oils of high viscosity?

Yes. The Full-flow quick coupling socket with GZ BSPT, NITTO KOHKI TSP CUPLA, brass is explicitly designed for hydraulic oils including highâviscosity fluids (e.g., lubricants). Its product description lists compatibility with hydraulic oils and specifically recommends it for highâviscosity media. Brass construction, fullâflow design and specified operating range (working pressures up to 50 bar depending on size; temperature range â20Â°C to +80Â°C with NBR seals) support use with viscous oils, though pressure limits vary by coupling size. For precise application verify oil temperature and viscosity against the coupling sizeâs pressure rating and consider seal compatibility if operating outside the stated temperature range.

Does the Full-flow quick coupling socket with GZ BSPT, NITTO KOHKI TSP CUPLA, brass resist corrosion from chemical exposure?

Full-flow quick coupling socket with GZ BSPT, NITTO KOHKI TSP CUPLA, brass Format: Brass offers good general corrosion resistance and is commonly used for fittings handling water, oils, steam, chemicals, air and gases. According to the product description, this coupling is designed for chemical exposure and a range of working pressures and temperatures (â20Â°C to +80Â°C with NBR seal), so it is suitable for many chemical applications. However, brass is not universally resistant to all chemicals. It resists water, hydraulic oils and many nonâoxidizing chemicals well, but is susceptible to dezincification in certain aggressive waters and can be attacked by strong acids, ammonia, some chlorides and other highly corrosive or oxidizing media. Compatibility also depends on temperature, pressure, the specific chemical, concentration, and exposure duration. Recommendation: For specific chemical exposure, verify compatibility by checking the chemicalâs corrosivity to brass (and NBR seals) or consult the manufacturerâs chemical compatibility chart. If the fluid is strongly acidic, alkaline, contains ammonia, high chloride content, or is known to cause dezincification, consider alternative materials (e.g., stainless steel) or confirm with Nitto Kohki technical support before use.

Full-flow quick coupling socket with GZ BSPT, NITTO KOHKI TSP CUPLA, brass

Q: Can Full-flow quick coupling socket with GZ BSPT, NITTO KOHKI TSP CUPLA, brass be used with steam at 80Â°C?

Yes. Full-flow quick coupling socket with GZ BSPT, NITTO KOHKI TSP CUPLA, brass is rated for use with steam up to +80Â°C (operating temperature range â20Â°C to +80Â°C with NBR seals) and is specified for steam service. Ensure the working pressure for your specific size does not exceed the listed limits (50â15 bar depending on size) and verify compatibility of NBR seals with your steam conditions; if thermal cycling, higher temperatures, or aggressive steam chemistry are expected, consider consulting manufacturer for seal/material confirmation.

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

Additional information

Material	B – brass (bronze)

Full-flow quick coupling socket 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: brass. Working pressure: 50 bar (1/8″, 1/4″, 3/8″), 30 bar (1/2″, 3/4″, 1″), 20 bar (1.1/4″, 1.1/2″), 15 bar (2″). Operating temperature: from -20°C to +80°C (NBR).

List of product variants

Article number	Product variant name	Nominal inner diameter	Working pressure [bar]
NK-10TSM-B	TSP CUPLA quick coupling socket, GZ BSPT 1.1/4", brass	-	20
NK-12TSM-B	TSP CUPLA quick coupling socket, GZ BSPT 1.1/2", brass	-	20
NK-16TSM-B	TSP CUPLA quick coupling socket, GZ BSPT 2", brass	-	15
NK-1TSM-B	TSP CUPLA quick coupling socket, GZ BSPT 1/8", brass	-	50
NK-2TSM-B	TSP CUPLA quick coupling socket, GZ BSPT 1/4", brass	-	50
NK-3TSM-B	TSP CUPLA quick coupling socket, GZ BSPT 3/8", brass	-	50
NK-4TSM-B	TSP CUPLA quick coupling socket, GZ BSPT 1/2", brass	-	30
NK-6TSM-B	TSP CUPLA quick coupling socket, GZ BSPT 3/4", brass	-	30
NK-8TSM-B	TSP CUPLA quick coupling socket, GZ BSPT 1", brass	-	30

Full-flow quick coupling socket 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: brass. Working pressure: 50 bar (1/8″, 1/4″, 3/8″), 30 bar (1/2″, 3/4″, 1″), 20 bar (1.1/4″, 1.1/2″), 15 bar (2″). Operating temperature: from -20°C to +80°C (NBR).