{"product_id":"kpl-nickel-plated-copper-pneumatic-quick-connector-bsp-air-compressor","title":"KPL Nickel-Plated Copper Pneumatic Quick Connector – 1\/8” to 1\/2” BSP Thread for Air Compressor \u0026 Hydraulic Systems","description":"\u003ch2\u003eKPL Nickel-Plated Copper Pneumatic Quick Connector – 1\/8” to 1\/2” BSP Thread\u003c\/h2\u003e\n\n\u003cp\u003eKPL-series nickel-plated copper pneumatic quick connectors combine a BSP-threaded body (for connection to valves, manifolds, and equipment ports) with a push-to-connect tube end (for tool-free hose insertion and release). The nickel-plated copper construction provides superior pressure resistance and corrosion resistance compared to plastic body fittings — rated to 1.5 MPa (218 PSI) — making these connectors suitable for industrial compressed air systems, hydraulic pilot circuits, and fluid control applications where plastic fittings are inadequate.\u003c\/p\u003e\n\n\u003ch3\u003eKey Specifications\u003c\/h3\u003e\n\u003cul\u003e\n  \u003cli\u003e\n\u003cstrong\u003eSeries:\u003c\/strong\u003e KPL (Push-to-connect with BSP male thread)\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eBody Material:\u003c\/strong\u003e Copper alloy, nickel-plated\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eThread Standard:\u003c\/strong\u003e BSP (BSPP parallel, ISO 228-1)\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eThread Sizes:\u003c\/strong\u003e 1\/8”, 1\/4”, 3\/8”, 1\/2” BSP (select above)\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eHose OD:\u003c\/strong\u003e 4mm, 6mm, 8mm, 10mm (select above)\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eWorking Pressure:\u003c\/strong\u003e 0–1.5 MPa (0–218 PSI)\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eTemperature Range:\u003c\/strong\u003e -20°C to +80°C\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eSeal Material:\u003c\/strong\u003e NBR O-ring\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eMedia:\u003c\/strong\u003e Compressed air, water, light oil, non-corrosive fluids\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch3\u003eKPL Naming Convention\u003c\/h3\u003e\n\u003cul\u003e\n  \u003cli\u003e\n\u003cstrong\u003eK\u003c\/strong\u003e = Copper (nickel-plated copper body)\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eP\u003c\/strong\u003e = Push-to-connect tube end\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eL\u003c\/strong\u003e = Male BSP thread (L = Locking \/ male thread end)\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eSize format:\u003c\/strong\u003e KPL[tube OD]-[BSP thread] — e.g., KPL6-02 = 6mm tube, G1\/4 (02 = 1\/4” BSP)\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch3\u003eNickel-Plated Copper vs Brass vs Plastic — Material Selection\u003c\/h3\u003e\n\u003cul\u003e\n  \u003cli\u003e\n\u003cstrong\u003ePlastic (POM\/PA):\u003c\/strong\u003e Lowest cost, lightest weight. Rated to 1.0 MPa. Suitable for instrument air and low-pressure circuits. Not suitable for hydraulic or high-pressure pneumatic systems.\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eBrass:\u003c\/strong\u003e Standard for most pneumatic and hydraulic fittings. Good machinability, adequate corrosion resistance. Susceptible to dezincification in high-chloride water. Rated to 1.5–2.0 MPa.\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eNickel-plated copper (this product):\u003c\/strong\u003e Higher corrosion resistance than brass (nickel plating resists oxidation and mild acids). Better appearance retention in visible installations. Rated to 1.5 MPa. Preferred for food processing, pharmaceutical, and clean-room pneumatic circuits where brass dezincification is a concern.\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eStainless steel (SUS304\/316):\u003c\/strong\u003e Maximum corrosion resistance. Required for aggressive chemical environments, marine, and food-grade wash-down. Highest cost.\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch3\u003eWhat Questions Does This Product Answer?\u003c\/h3\u003e\n\u003cul\u003e\n  \u003cli\u003e\n\u003cem\u003e\"What is the difference between KPL and PC-G pneumatic fittings?\"\u003c\/em\u003e — Both are push-to-connect fittings with male BSP thread. KPL has a nickel-plated copper body (higher pressure rating, better corrosion resistance). PC-G typically has a brass or stainless steel body. The functional design is identical — the difference is body material and pressure rating.\u003c\/li\u003e\n  \u003cli\u003e\n\u003cem\u003e\"Can I use KPL fittings for hydraulic oil circuits?\"\u003c\/em\u003e — Yes for light hydraulic oil (mineral oil) at pressures up to 1.5 MPa. For high-pressure hydraulic circuits (\u0026gt;1.5 MPa), use hydraulic-rated fittings (JIC, ORFS, or BSP with compression ferrule) rated for the system pressure.\u003c\/li\u003e\n  \u003cli\u003e\n\u003cem\u003e\"Do I need PTFE tape on the BSP thread of a KPL fitting?\"\u003c\/em\u003e — No. BSP parallel (BSPP) threads seal via the O-ring on the thread shoulder, not via thread interference. PTFE tape on BSPP threads does not improve the seal and can contaminate the pneumatic system. Use a bonded seal washer or verify the mating port has an O-ring face seal groove.\u003c\/li\u003e\n  \u003cli\u003e\n\u003cem\u003e\"What is the maximum operating temperature for KPL fittings?\"\u003c\/em\u003e — 80°C with standard NBR O-ring. For higher temperatures (up to 150°C), replace the NBR O-ring with a FKM (Viton) O-ring of the same dimensions.\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch3\u003eTypical Applications\u003c\/h3\u003e\n\u003cul\u003e\n  \u003cli\u003e\n\u003cstrong\u003eIndustrial compressed air:\u003c\/strong\u003e Cylinder connections, valve manifold ports, regulator outlets, filter-regulator-lubricator (FRL) unit connections\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eHydraulic pilot circuits:\u003c\/strong\u003e Low-pressure pilot air connections on hydraulic valves and actuators\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eFood \u0026amp; beverage:\u003c\/strong\u003e Pneumatic actuator connections where brass dezincification is a concern\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eCNC machining:\u003c\/strong\u003e Coolant mist system connections, air blow-off circuits, spindle air purge\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eAutomotive workshop:\u003c\/strong\u003e Air tool connections, tire inflation circuits, spray gun supply lines\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch3\u003ePackage Contents\u003c\/h3\u003e\n\u003cp\u003e1 × KPL nickel-plated copper pneumatic quick connector (tube OD and BSP thread size as selected above).\u003c\/p\u003e","brand":"Cable Parts Online","offers":[{"title":"KPL4-01 \/ 10 PCS","offer_id":47850755555573,"sku":"14:10#KPL4-01;183:202360806#10 PCS","price":38.5,"currency_code":"USD","in_stock":true},{"title":"KPL4-01 \/ 50 PCS","offer_id":47850755522805,"sku":"14:10#KPL4-01;183:202360807#50 PCS","price":134.79,"currency_code":"USD","in_stock":true},{"title":"KPL4-01 \/ 200 PCS","offer_id":47850755621109,"sku":"14:10#KPL4-01;183:202360808#200 PCS","price":485.17,"currency_code":"USD","in_stock":true},{"title":"KPL4-02 \/ 10 PCS","offer_id":47850755588341,"sku":"14:173#KPL4-02;183:202360806#10 PCS","price":55.16,"currency_code":"USD","in_stock":true},{"title":"KPL4-02 \/ 50 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