Is the Nickel-plated steel quick coupling, socket with GW BSP and BSPT, 350 series CUPLA, NITTO KOHKI suitable for continuous use at +180Â°C without seal degradation?

Yes. Nickel-plated steel quick coupling, socket with GW BSP and BSPT, 350 series CUPLA, NITTO KOHKI is specified for operation from -20Â°C to +180Â°C and uses Viton (FKM) seals. Viton is generally suitable for continuous use at +180Â°C.its typical upper continuous service temperature is around 200Â°C depending on compound and application.so at +180Â°C it should maintain sealing performance without degradation under normal conditions. Caveats: actual life at +180Â°C depends on factors not fully specified here: exact Viton formulation, exposure to aggressive fluids, pressure cycles (up to 345 bar specified), pulsations, mechanical vibration, and installation conditions. For continuous high-temperature service under high pressure or aggressive media, confirm with NITTO KOHKI or supplier for the specific seal compound and recommended continuous-temperature rating and consider periodic inspection/replacement intervals.

Can the Nickel-plated steel quick coupling, socket with GW BSP and BSPT, 350 series CUPLA, NITTO KOHKI be autoclaved or steam-sterilized without damaging seals?

Nickel-plated steel quick coupling, socket with GW BSP and BSPT, 350 series CUPLA, NITTO KOHKI: Seals are Viton and the listed operating temperature range is -20Â°C to +180Â°C. Standard steam sterilization (autoclaving) uses saturated steam at ~121Â°Câ134Â°C, which falls within the couplingâs stated temperature limit, so brief autoclave cycles at those temperatures are unlikely to thermally degrade Viton. However, repeated autoclaving, higher temperatures, prolonged exposure, or aggressive chemicals/condensate could accelerate seal aging, embrittlement or loss of elasticity. Also consider nickel-plated steel corrosion risk from condensate and possible effects on lubrication. Recommendation: autoclaving at â¤134Â°C for limited cycles is generally acceptable but verify with manufacturer for your specific sterilization regimen and perform compatibility/aging tests before service use.

Does the Nickel-plated steel quick coupling, socket with GW BSP and BSPT, 350 series CUPLA, NITTO KOHKI resist vibration-induced leaks?

Yes. Nickel-plated steel quick coupling, socket with GW BSP and BSPT, 350 series CUPLA, NITTO KOHKI resists vibration-induced leaks. The product description specifies âexcellent durability, resistance to vibrations and pulsating pressureâ and highlights use in hydraulic systems of casting equipment where sudden pressure changes occur. Features that prevent vibration-related leakage include the flat-face leak-free design, Viton seals, a safety pin to prevent accidental disconnection, and a working pressure rating up to 345 bar. These characteristics together ensure low air inclusion and reliable sealing under vibration and pressure pulsation.

Quick coupling of nickel-plated steel, socket with female thread BSP and BSPT, 350 series CUPLA, NITTO KOHKI

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Additional information

Material	CS – steel (cast iron)

The NITTO KOHKI 350 CUPLA series socket with a BSP and BSPT female thread. Leak-free flat-face quick couplings, type IF. Manufactured in Japan from special alloy steel. It is characterized by excellent durability, resistance to vibration and pulsating pressure, and very low air inclusion. The socket has a stem to prevent accidental disconnection. Used, among others, in the hydraulic systems of foundry equipment, where sudden pressure changes occur. The quick coupling can be operated with one hand. A characteristic feature is the working pressure, which does not depend on the quick-coupling size. Material: nickel-plated steel. Operating temperature: from -20°C to +180°C. Sealing: viton. Working pressure: up to 345 bar. The flow is given for a pressure drop of 3 bar.

List of product variants

Article number	Product variant name	DN	BAR	Availability	Actions
NK-350-10S	Socket 350 CUPLA 1.1/2" with 1.1/4" BSPT female, seal Viton	-	345	In stock	Enquiry
NK-350-12S	Socket 350 CUPLA 1.1/2" with 1.1/2" BSPT female, seal Viton	-	345	In stock	Enquiry
NK-350-2S	Socket 350 CUPLA 1/4" with 1/4" BSPT female, seal Viton	-	345	In stock	Enquiry
NK-350-3S	Socket 350 CUPLA 1/4" with 3/8" BSPT female, seal Viton	-	345	In stock	Enquiry
NK-350-3S-3G	Socket 350 CUPLA 1/4" with 3/8" BSP female, seal Viton	-	345	In stock	Enquiry
NK-350-4S	Socket 350 CUPLA 1/2" with 1/2" BSPT female, seal Viton	-	345	In stock	Enquiry
NK-350-4S-4G	Socket 350 CUPLA 1/2" with 1/2" BSP female, seal Viton	-	345	In stock	Enquiry
NK-350-6S	Socket 350 CUPLA 3/4" with 3/4" BSPT female, seal Viton	-	345	In stock	Enquiry
NK-350-6S-6G	Socket 350 CUPLA 3/4" with 3/4" BSP female, seal Viton	-	345	In stock	Enquiry
NK-350-8S	Socket 350 CUPLA 1" with 1" BSPT female, seal Viton	-	345	In stock	Enquiry
NK-350-8S-8G	Socket 350 CUPLA 1" with 1" BSP female, seal Viton	-	345	In stock	Enquiry

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The NITTO KOHKI 350 CUPLA series socket with a BSP and BSPT female thread. Leak-free flat-face quick couplings, type IF. Manufactured in Japan from special alloy steel. It is characterized by excellent durability, resistance to vibration and pulsating pressure, and very low air inclusion. The socket has a stem to prevent accidental disconnection. Used, among others, in the hydraulic systems of foundry equipment, where sudden pressure changes occur. The quick coupling can be operated with one hand. A characteristic feature is the working pressure, which does not depend on the quick-coupling size. Material: nickel-plated steel. Operating temperature: from -20°C to +180°C. Sealing: viton. Working pressure: up to 345 bar. The flow is given for a pressure drop of 3 bar.