What are medium pressure pneumatic couplings up to 75 bar and where are they used industrially?

Medium pressure pneumatic couplings rated up to 75 bar are quick-disconnect fluid connectors designed for compressed air and pneumatic media applications requiring higher operating pressures than standard 10 bar systems. Nitto Kohki Multi Cupla Zerospill and TSP Cupla series serve automotive manufacturing, packaging machinery, hydraulic test equipment, and industrial automation where rapid connection changes are needed without system depressurization. These aluminum and stainless steel couplings with NBR, FKM, or EPDM seals enable efficient maintenance and reconfiguration of medium-pressure pneumatic circuits in production environments.

What technical specifications should I consider when selecting Nitto Kohki medium pressure couplings?

Critical selection criteria for Nitto Kohki medium pressure couplings include maximum working pressure of 75 bar, body material compatibility with your media and environment, and seal material selection based on temperature and chemical resistance requirements. The Multi Cupla Zerospill series uses aluminum construction with NBR seals for general compressed air, while SP-A and TSP Cupla series feature stainless steel bodies with NBR, FKM, or EPDM seals for enhanced chemical resistance. Port configurations range from 2S to 4S thread sizes, with specific models like MAM-A-4S8-CL and 16TSH offering different flow capacities and connection interfaces for your pneumatic system requirements.

Which international standards apply to Nitto Kohki medium pressure pneumatic couplings?

Nitto Kohki medium pressure pneumatic couplings comply with ISO 4414 for pneumatic fluid power systems and ISO 7241-1 for hydraulic quick-action couplings, ensuring proper safety factors and performance characteristics up to 75 bar operating pressure. The stainless steel construction in SP-A and TSP Cupla series meets material requirements for food-grade applications under relevant hygiene standards, while aluminum Multi Cupla components conform to pressure equipment directive requirements for industrial compressed air systems. Seal materials including NBR, FKM, and EPDM are selected to meet temperature and chemical compatibility standards for specific industrial applications requiring medium pressure operation.

What are the differences between Nitto Kohki Multi Cupla Zerospill, SP-A Cupla, and TSP Cupla series?

Multi Cupla Zerospill series features aluminum bodies with leak-free disconnection technology and NBR seals optimized for general compressed air applications, while SP-A Cupla series uses stainless steel construction with multiple seal options including NBR, FKM, and EPDM for enhanced chemical resistance. TSP Cupla series provides stainless steel bodies specifically designed for high-temperature and aggressive media applications with FKM or NBR seals, offering superior corrosion resistance compared to aluminum variants. The key distinction lies in material construction and seal compatibility, with aluminum Multi Cupla suitable for standard industrial air, while stainless steel SP-A and TSP series handle specialized media and harsh environmental conditions up to 75 bar working pressure.

What installation requirements and system compatibility considerations apply to 75 bar Nitto Kohki couplings?

Nitto Kohki medium pressure couplings require proper thread engagement with appropriate thread sealant or O-ring sealing depending on the specific model configuration, ensuring leak-tight connections at operating pressures up to 75 bar. System compatibility depends on matching coupling thread sizes like 2S, 3S, and 4S designations with existing pneumatic circuit connections, while considering flow capacity requirements for your application. Installation must account for pressure relief before disconnection on non-zerospill models, proper torque specifications for threaded connections, and adequate clearance for coupling operation in confined spaces typical of industrial machinery and automation equipment.

What safety ratings and operating parameters do Nitto Kohki medium pressure couplings provide?

Nitto Kohki medium pressure couplings are rated for continuous operation at 75 bar maximum working pressure with appropriate safety factors built into the design specifications. Operating temperature ranges vary by seal material, with NBR seals typically rated from -20°C to +80°C, FKM seals extending to +200°C for high-temperature applications, and EPDM seals offering enhanced low-temperature performance. The stainless steel TSP and SP-A series provide superior corrosion resistance for harsh industrial environments, while aluminum Multi Cupla variants offer cost-effective solutions for standard compressed air applications within the 75 bar pressure rating and specified temperature limits.

What maintenance intervals and service life expectations apply to Nitto Kohki 75 bar pneumatic couplings?

Nitto Kohki medium pressure couplings typically require visual inspection every 3-6 months for seal integrity, body wear, and proper locking mechanism function, with complete seal replacement recommended every 12-24 months depending on operating conditions and cycle frequency. Service life expectations range from 100,000 to 500,000 connection cycles for stainless steel TSP and SP-A series under normal industrial conditions, while aluminum Multi Cupla variants provide reliable service for 50,000-200,000 cycles at 75 bar operating pressure. Preventive maintenance includes regular cleaning of coupling faces, lubrication of moving parts with compatible pneumatic lubricants, and replacement of worn seals to maintain leak-free operation and system efficiency.

Medium Pressure up to 75 Bar Nitto Kohki

Nitto Kohki Pneumatic Solutions

Nitto Kohki medium-pressure quick couplings are rated to 75 bar working pressure and cover bore sizes from 2.5 mm to 15 mm, delivering leak-free connect/disconnect under full system pressure. The TSP Cupla series seals to <1 cm³/min air loss at 70 bar, while the Zero Spill Cupla retains fluid on both plug and socket sides - reducing hydraulic fluid spillage to virtually zero and meeting demanding fluid-handling standards. All bodies are precision-machined from carbon steel or stainless steel with NBR or FKM seals rated for continuous operation from -20 to +100 °C.

As an authorised distributor for Nitto Kohki pneumatic and hydraulic couplings, this catalogue lists 521 products across the medium-pressure range - including TSP, TSP-BV, SP Type A, and Zero Spill Cupla families - all compliant with ISO 7241 series B and ISO 16028 coupling standards. Same-day dispatch on stocked items with full technical datasheets available on request.

Nitto Kohki TSP-BV Cupla Push-to-connect, ball-valve lock, up to 75 bar, ISO 7241-B Nitto Kohki SP Cupla Type A Type A sleeve-lock coupling, 70 bar max, NBR/FKM seals Nitto Kohki TSP Cupla One-touch connect/disconnect, 75 bar, -20 to +100 °C Nitto Kohki Zero Spill Cupla Dual shut-off, <0.1 ml spill on disconnect, ISO 16028

Key technical advantages - Nitto Kohki Medium Pressure Couplings at a glance

⚡ 75 bar working pressure - full rated pressure on connect/disconnect, ISO 7241-B

↕ Bore range 2.5-15 mm - scalable flow capacity across all Cupla series

🛠 One-touch operation - single-handed connect under live pressure, no tools required

⚙ Carbon steel & stainless steel bodies - NBR/FKM seal options for fluid compatibility

🛡 Zero Spill <0.1 ml loss - dual shut-off valves, ISO 16028 compliant

✓ -20 to +100 °C rated - continuous duty, 521 products in stock for same-day dispatch

Nitto Kohki Medium-Pressure Cupla Series - Product Overview

Series	Max. Pressure	Connection Type	Spill Control	Standard
TSP Cupla	75 bar	One-touch push-to-connect	Single shut-off	ISO 7241-B
TSP-BV Cupla	75 bar	Push-to-connect with ball-valve lock	Single shut-off + valve lock	ISO 7241-B
SP Cupla Type A	70 bar	Sleeve-lock, Type A profile	Single shut-off	ISO 7241-A
Zero Spill Cupla	75 bar	Push-to-connect, dual shut-off	<0.1 ml on disconnect	ISO 16028

Typical applications: Hydraulic machinery and presses (ISO 7241, ISO 16028), industrial automation and pneumatic tooling (ISO 4414), semiconductor fab equipment fluid distribution (SEMI S2), mobile hydraulics and construction machinery (DIN EN ISO 6945), test bench and measurement systems requiring leak-free coupling (IEC 60068), medical device manufacturing fluid lines (ISO 13485), and automotive assembly plant hydraulic circuits (IATF 16949, VDA 6.3).

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Authorised Nitto Kohki Distributor TSP, TSP-BV, SP Type A, Zero Spill Cupla - full series stocked

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521 Products - Same-Day Dispatch Medium-pressure couplings up to 75 bar ready from stock

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ISO 7241 & ISO 16028 Compliant Certified coupling geometries, full technical documentation available