Is the Quick coupling plug with GW BSPT valve, NITTO KOHKI SP CUPLA type A, AISI 304 steel suitable for steam at +150Â°C with Viton seals?

Yes . the Quick coupling plug with GW BSPT valve, NITTO KOHKI SP CUPLA type A, AISI 304 steel is suitable for steam at +150Â°C provided the coupler is fitted with Viton seals. The product data states compatibility with steam and an operating temperature range up to +180Â°C for Viton (vs. +80Â°C for NBR). AISI 304 construction is commonly used for steam applications, and the listed working pressures (depending on size) are ample for many steam systems; ensure the specific sizeâs maximum working pressure (75, 45, 30, or 20 bar) and BSPT thread fit your system. Also confirm system pressure, continuous exposure conditions, and any regulatory or safety requirements for your installation before use.

Quick coupling plug with GW BSPT valve, NITTO KOHKI SP CUPLA type A, AISI 304 steel

Q: Can the Quick coupling plug with GW BSPT valve, NITTO KOHKI SP CUPLA type A, AISI 304 steel be used for potable water systems?

Yes - Quick coupling plug with GW BSPT valve, NITTO KOHKI SP CUPLA type A, AISI 304 steel can be used for potable water systems, with reservations. AISI 304 stainless is broadly corrosionâresistant and compatible with water; the product description explicitly lists âwaterâ among suitable media. However, confirm the following before installation: (1) seals: NBR and Viton are listed - NBR is generally acceptable for potable water but may not meet all drinkingâwater regulatory approvals; Viton is less commonly approved for potable use. (2) any required national/regulatory approvals (WRAS, NSF/ANSI 61, ACS, etc.) for drinkingâwater applications. (3) ensure operating pressure and temperature ratings match system conditions. If approvals for potable water are required, obtain manufacturer certification or choose materials/ seal compounds certified for drinking water.

Q: Can the Quick coupling plug with GW BSPT valve, NITTO KOHKI SP CUPLA type A, AISI 304 steel be used with compressed gases at 75 bar?

Yes. but with conditions. Quick coupling plug with GW BSPT valve, NITTO KOHKI SP CUPLA type A, AISI 304 steel lists a working pressure of 75 bar for sizes 1/8", 1/4" and 3/8". For those sizes, the plug is rated for 75 bar and the product description explicitly includes gases among intended media, so it can be used with compressed gases at 75 bar provided all other system conditions are met. Important caveats: - Only sizes 1/8", 1/4" and 3/8" are rated to 75 bar. Larger sizes have lower maximum pressures (45, 30, 20 bar) and must not be used at 75 bar. - Ensure the seal material is appropriate: NBR rated -20Â°C to +80Â°C; Viton rated -20Â°C to +180Â°C. Choose Viton if gas temperature or chemical compatibility requires it. - Confirm compatibility of AISI 304 with the specific compressed gas (some gases or contaminants may cause corrosion or embrittlement). - Use correct BSPT thread sealing practice and torque; ensure mating components and system piping are rated for 75 bar. - Follow applicable safety standards and pressure testing procedures for compressed gas systems. If all the above are satisfied (correct size, appropriate seal, material compatibility and system rating), the Quick coupling plug with GW BSPT valve, NITTO KOHKI SP CUPLA type A, AISI 304 steel may be used with compressed gases at 75 bar.

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

Additional information

Material	SS – stainless steel

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: AISI 304 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), from -20°C to +180°C (Viton).

List of product variants

Article number	Product variant name	Nominal inner diameter	Working pressure [bar]
NK-10P-A-SS	SP-A CUPLA quick coupling plug, BSPT 1.1/4" thread, AISI 304	-	30
NK-12P-A-SS	SP-A CUPLA quick coupling plug, BSPT 1.1/2" thread, AISI 304	-	30
NK-16P-A-SS	SP-A CUPLA quick coupling plug, BSPT 2", AISI 304	-	20
NK-1P-A-SS	SP-A CUPLA quick coupling plug, BSPT 1/8" thread, AISI 304	-	75
NK-1P-A-SS-V	SP-A CUPLA quick coupling plug, BSPT 1/8" thread, AISI 304, viton	-	75
NK-2P-A-SS	SP-A CUPLA quick coupling plug, BSPT 1/4" thread, AISI 304	-	75
NK-3P-A-SS	SP-A CUPLA quick coupling plug, BSPT 3/8" thread, AISI 304	-	75
NK-3P-A-SS-V	SP-A CUPLA quick coupling plug, BSPT 3/8" thread, AISI 304, viton	-	75
NK-4P-A-SS	SP-A CUPLA quick coupling plug, BSPT 1/2" thread, AISI 304	-	45
NK-6P-A-SS	SP-A CUPLA quick coupling plug, BSPT 3/4" thread, AISI 304	-	45
NK-6P-A-SS-V	SP-A CUPLA quick coupling plug, BSPT 3/4" thread, AISI 304, viton	-	45
NK-8P-A-SS	SP-A CUPLA quick coupling plug, BSPT 1" thread, AISI 304	-	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: AISI 304 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), from -20°C to +180°C (Viton).