Can Quick coupling plug with GW BSPT valve, NITTO KOHKI SP CUPLA type A, carbon steel be used with steam at the 45 bar rating?

Yes. Quick coupling plug with GW BSPT valve, NITTO KOHKI SP CUPLA type A, carbon steel can be used with steam at the 45 bar rating only if the connector size and sealing material meet the specified limits and application conditions. Key points: - The product specification lists steam among compatible media. - Working pressure for sizes 1/2", 3/4", 1" is 45 bar. so for those sizes the pressure rating matches your 45 bar steam requirement. - Operating temperature range is â20Â°C to +80Â°C with NBR seals. Steam at high pressure typically has temperatures well above +80Â°C; if steam temperature exceeds +80Â°C, NBR seals will degrade and the coupling is not suitable. - Material is chromeâplated carbon steel; this is generally acceptable for steam, but confirm compatibility with water chemistry and corrosion conditions. - For safe use you must ensure actual steam temperature at 45 bar and duty cycle do not exceed the couplingâs temperature limit, and verify seal material (NBR) is acceptable or replace with highâtemperature seal (e.g., FKM/PTFE) rated for steam. - Follow manufacturerâs installation, maintenance, and safety guidelines; if in doubt, consult Nitto Kohki technical support or provide detailed temperature/steam conditions for confirmation. Summary: Acceptable at 45 bar only for 1/2", 3/4", 1" sizes and only if steam temperature stays within the â20Â°C to +80Â°C (NBR) limit or a suitable highâtemperature seal is fitted.

Quick coupling plug with GW BSPT valve, NITTO KOHKI SP CUPLA type A, carbon steel

Q: Is the Quick coupling plug with GW BSPT valve, NITTO KOHKI SP CUPLA type A, carbon steel suitable for steam service at 75 bar?

Yes . the Quick coupling plug with GW BSPT valve, NITTO KOHKI SP CUPLA type A, carbon steel is suitable for steam service at 75 bar only for the sizes rated to that working pressure (1/8", 1/4", 3/8"). The product datasheet lists steam as a compatible medium and a working pressure of 75 bar for those three sizes. However, check these conditions before use: ensure the actual operating temperature does not exceed the NBR-rated range (â20Â°C to +80Â°C), confirm steam temperature at your pressure is within that limit, and verify chemical compatibility and seals for continuous highâtemperature steam. For sizes 1/2" and larger the maximum working pressure is lower (45 bar and below), so they are not suitable for 75 bar steam service.

Q: Can the Quick coupling plug with GW BSPT valve, NITTO KOHKI SP CUPLA type A, carbon steel be used with hydraulic oils at 75 bar?

Yes. The Quick coupling plug with GW BSPT valve, NITTO KOHKI SP CUPLA type A, carbon steel is rated for hydraulic oils at a working pressure of 75 bar for sizes 1/8", 1/4" and 3/8". It is specified for use with water, hydraulic oils, steam, chemicals, air and gases, made of chrome-plated steel, and has an operating temperature range of -20Â°C to +80Â°C (NBR). Ensure your system uses one of the 75âbar sizes and verify compatibility with seals and fluid temperature for safe, long-term operation.

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

Additional information

Material	CS – steel (cast iron)

Nitto Kohki series SP CUPLA type A plug with shut-off valve, featuring internal BSPT thread, excellent durability, designed for water, hydraulic oils, steam, chemicals, air, and gases. Material: chrome-plated 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	Nominal inner diameter	Working pressure [bar]
NK-10P-A-S	SP-A CUPLA quick coupling plug, BSPT 1.1/4" thread, nickel-plated steel	-	30
NK-12P-A-S	SP-A CUPLA quick coupling plug, BSPT 1.1/2" thread, nickel-plated steel	-	30
NK-16P-A-S	SP-A CUPLA quick coupling plug, BSPT 2" thread, nickel-plated steel	-	20
NK-2P-A-S	SP-A CUPLA quick coupling plug, BSPT 1/4" thread, nickel-plated steel	-	75
NK-3P-A-S	SP-A CUPLA quick coupling plug, BSPT 3/8" thread, nickel-plated steel	-	75
NK-4P-A-S	SP-A CUPLA quick coupling plug, BSPT 1/2" thread, nickel-plated steel	-	45
NK-6P-A-S	SP-A CUPLA quick coupling plug, BSPT 3/4" thread, nickel-plated steel	-	45
NK-8P-A-S	SP-A CUPLA quick coupling plug, BSPT 1" thread, nickel-plated steel	-	45

Nitto Kohki series SP CUPLA type A plug with shut-off valve, featuring internal BSPT thread, excellent durability, designed for water, hydraulic oils, steam, chemicals, air, and gases. Material: chrome-plated 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).