KC Nipple
Designed to facilitate secure connections between hoses and pipelines, KC Nipples are essential components in a wide range of industries, including oil and gas, petrochemical, and manufacturing.
KC Nipple Supplier from China
The KC Nipple is a Japanese-standard hose coupling widely used across Asia-Pacific for connecting rubber and PVC hose in air, water, steam and light chemical service.
It consists of a male nipple with a matching female coupler locked by two lugs, giving a fast, tool-free connection that is more secure than a plain hose tail.
Technical Specifications
| Item | Specification |
|---|---|
| Product Type | KC Nipple / KC Coupling (Japanese hose coupling standard) |
| Material | Brass · Stainless Steel 304/316 · Galvanized Steel · Aluminium |
| Size Range | 1/4" to 6" (DN8 – DN150) |
| Thread Type | BSP / NPT / BSPT available on request |
| Connection Style | Two-lug bayonet lock with hose tail or threaded end |
| Working Pressure | Up to 10 bar (150 PSI) depending on material and size |
| Working Temperature | -20°C to +180°C (metal) |
| Gasket | NBR, EPDM or PTFE flat washer |
| Surface Finish | Natural, nickel-plated, or polished |
| MOQ | 200 pcs per size |
Key Features
- Two-lug bayonet lock connects and disconnects in seconds without tools.
- Deep hose tail with multiple barbs gives a strong grip when used with a hose clamp or ferrule.
- Brass, stainless and plated steel options cover air, water, steam and mild chemical duty.
- Standardised dimensions interchange with other KC-series couplings already in service.
- Precision-machined sealing face with gasket seat prevents weeping at the joint.
- Available as hose-to-hose, hose-to-thread and hose-to-flange configurations.
Application Scenarios
- Compressed air: workshop air lines, pneumatic tools and portable compressors.
- Water transfer: construction dewatering, tank filling and wash-down systems.
- Steam & hot water: brass and stainless grades for low-pressure steam cleaning.
- Agriculture: spraying equipment, slurry transfer and irrigation hose connections.
- Marine & shipyard: deck wash, bilge and general service water lines.
Customization & OEM Service
ShengYa supplies KC type hose nipples and couplings to distributors, hose assemblers and OEM equipment builders worldwide. We support full customization:
- Size & specification: non-standard bore, band width or thread pitch built to your drawing.
- Material selection: carbon steel, stainless steel 304/316, brass, aluminium, PP or nylon to match the medium.
- Sealing & gasket: NBR, EPDM, Viton, PTFE or silicone gaskets for chemical, oil or food contact.
- Branding: laser-engraved logo, stamped part number, custom label and retail/wholesale packaging.
- Documentation: material certificate, dimensional report and pressure-test report on request.
Packaging & Delivery
Standard packing is polybag + inner box + export carton, or bulk-packed on request. Typical MOQ is 500 pcs per size for customized orders and 100 pcs for stocked sizes. Lead time is 7–15 days for stock and 20–30 days for customized production. Samples are available for evaluation before bulk order.
Frequently Asked Questions
Is the KC coupling interchangeable with other brands?
KC dimensions follow the common Japanese standard used across the region, so our couplings interchange with most KC-series fittings already installed. Send us a sample or drawing if you need confirmation.
Which material should I use for steam?
For steam and hot water we recommend brass or stainless steel 304 with a PTFE or high-temperature gasket; plated steel is suitable for air and cold water only.
Do I need a clamp with the hose tail?
Yes. The barbed tail should be secured with a suitable hose clamp or swaged ferrule to achieve the rated pressure and prevent blow-off.
Can you supply the coupler and nipple separately?
Yes, male nipples, female couplers and gaskets are all available separately, so you can replace worn parts without discarding the whole assembly.
