Quick couplings

Compact Zero Spill Cupla

The Nitto Kohki Compact Zero Spill Cupla is a compact stainless steel (SUS) quick coupling with EPDM seals and leak-free disconnection technology. The range covers four items in nominal sizes 1 and 2 as plug (PM) and socket (SM): CZL-1PM, CZL-2PM, CZL-1SM and CZL-2SM. The Zero Spill function prevents any fluid escape during disconnection or connection - no drips, no spray. EPDM seals are particularly suited to water, hot water, steam and polar media.

4 items
1 manufacturer
Net prices plus VAT

Buying guide

How to choose Compact Zero Spill Cupla

What matters when choosing: properties, comparison and typical applications.

Technical features

⚙ Stainless steel (SUS), EPDM seal - corrosion-resistant, for water, hot water and polar media

✓ Zero Spill technology - no fluid escape on disconnection or connection

⚡ Compact design - space-saving dimensions for confined installation situations

↕ Nominal sizes 1 and 2 - CZL-1PM/SM (size 1) and CZL-2PM/SM (size 2)

✦ PM/SM connections - plug (PM) and socket (SM) per nominal size

Product overview

Part number	Nominal size	Type	Body material	Seal
CZL-1PM	1	Plug (PM)	Stainless steel (SUS)	EPDM
CZL-1SM	1	Socket (SM)	Stainless steel (SUS)	EPDM
CZL-2PM	2	Plug (PM)	Stainless steel (SUS)	EPDM
CZL-2SM	2	Socket (SM)	Stainless steel (SUS)	EPDM

Typical applications

Typical applications: Cooling water and temperature-control circuits in laboratory and medical equipment, hot-water and steam lines (EPDM), cleanroom applications mandating stainless steel, any liquid-carrying system where drip losses during coupling changes are unacceptable (optical laboratory apparatus, analytical instruments, chromatography), and compact installations with confined space constraints.

FAQ

Frequently asked questions about Compact Zero Spill Cupla

What are Compact Zero Spill Cupla quick-disconnect couplings and their primary industrial applications?

Compact Zero Spill Cupla quick-disconnect couplings are precision-engineered pneumatic and hydraulic connectors designed to eliminate fluid spillage during connection and disconnection operations. These stainless steel couplings with EPDM sealing are extensively used in cleanroom environments, pharmaceutical manufacturing, food processing equipment, and semiconductor production lines where contamination control is critical. The zero-spill design prevents media loss and environmental contamination, making them essential for applications handling compressed air, inert gases, and clean hydraulic fluids in automotive assembly, medical device manufacturing, and precision instrumentation systems.

What are the key technical selection criteria for Nitto Kohki Compact Zero Spill Cupla couplings?

Technical selection of Nitto Kohki Compact Zero Spill Cupla couplings depends on port configuration, material compatibility, and sealing performance requirements. The CZL series offers both socket (SM) and plug (PM) configurations in sizes 1 and 2, with stainless steel construction providing corrosion resistance up to 150°C operating temperature. EPDM sealing elements ensure compatibility with compressed air, nitrogen, and water-based media while maintaining zero leakage performance. Connection thread specifications, flow coefficient values, and pressure drop characteristics must align with system requirements to optimize pneumatic circuit efficiency and prevent performance degradation in high-cycle applications.

Which international standards and certifications apply to Compact Zero Spill Cupla pneumatic couplings?

Compact Zero Spill Cupla pneumatic couplings comply with ISO 4414 pneumatic system safety standards and ISO 14743 pneumatic fluid power coupling specifications for industrial applications. The stainless steel construction meets ASTM A240 material standards while EPDM sealing components conform to FDA 21 CFR 177.2600 regulations for food contact applications. These couplings are designed to meet IP65 ingress protection requirements and comply with REACH regulation for chemical safety in European industrial environments. The zero-spill functionality aligns with ISO 14001 environmental management standards by preventing fluid contamination and workplace safety hazards during system maintenance operations.

What are the differences between CZL-1SM, CZL-2SM, CZL-1PM, and CZL-2PM Compact Zero Spill Cupla variants?

The Compact Zero Spill Cupla variants differ primarily in size designation and coupling configuration within the CZL series architecture. CZL-1SM and CZL-2SM models represent socket configurations with size 1 and size 2 port dimensions respectively, designed to receive the corresponding plug components. CZL-1PM and CZL-2PM variants are plug configurations that mate with their respective socket counterparts, with size 2 models providing higher flow rates and pressure handling capability. All variants feature identical stainless steel construction with EPDM sealing, but larger size 2 models offer reduced pressure drop and increased flow coefficient for high-demand pneumatic applications requiring maximum system efficiency.

What installation requirements and system compatibility considerations apply to Compact Zero Spill Cupla couplings?

Compact Zero Spill Cupla installation requires proper thread engagement torque specifications and system pressure testing to ensure leak-free operation in pneumatic circuits. The stainless steel couplings are compatible with compressed air systems operating up to 10 bar working pressure and require NPT or BSP threaded connections depending on regional standards. System compatibility includes verification of EPDM seal compatibility with process media, adequate clearance for coupling engagement, and proper hose routing to prevent mechanical stress on connection points. Installation must include provision for periodic inspection access and consideration of thermal expansion effects in systems experiencing temperature cycling between ambient and operating conditions.

What are the safety ratings, IP protection class, and operating parameter ranges for Compact Zero Spill Cupla systems?

Compact Zero Spill Cupla couplings operate safely within temperature ranges from -20°C to +150°C with working pressures up to 10 bar for pneumatic applications and higher ratings for hydraulic service. The stainless steel construction provides IP65 ingress protection against dust and water jets, ensuring reliable operation in industrial washdown environments. EPDM sealing elements maintain zero leakage performance across the full temperature range while resisting ozone degradation and chemical attack from standard pneumatic media. Safety factors are engineered to exceed 4:1 pressure rating margins, and the fail-safe design prevents accidental disconnection under system pressure, meeting industrial safety requirements for automated manufacturing equipment.

What maintenance schedule and service life expectations apply to Compact Zero Spill Cupla pneumatic couplings?

Compact Zero Spill Cupla maintenance schedules typically require visual inspection every 500 operating cycles or monthly intervals in continuous service applications to verify seal integrity and coupling engagement. The stainless steel construction provides service life exceeding 100,000 connection cycles under normal operating conditions, with EPDM sealing elements requiring replacement every 2-3 years depending on media compatibility and temperature exposure. Preventive maintenance includes periodic lubrication of coupling mechanisms with pneumatic-grade lubricants and pressure testing at 1.5 times working pressure annually. Inspection criteria focus on seal wear patterns, coupling body corrosion, and spring mechanism function to ensure continued zero-spill performance throughout the coupling's operational lifetime in industrial pneumatic systems.