What is a King Nipple?
The Essential PipetoHose Transition Fitting
A King Nipple (also called KC Nipple or Combination Nipple) is a specialized industrial fitting that seamlessly bridges femalethreaded pipes and flexible hoses. Its unique dualended design solves connection challenges in liquid/gas transfer systems where space and compatibility matter.
| Pipe Size | 1/2 | 3/4 | 1 | 1 1/4 | 1 1/2 | 2 | 2 1/2 | 3 | 4 |
| A | 3.125 | 3.375 | 3.500 | 3.500 | 4.250 | 4.250 | 5.375 | 5.875 | 7.000 |
| C | 0.645 | 0.845 | 1.075 | 1.405 | 1.640 | 2.095 | 2.505 | 3.100 | 4.060 |
Key Features & Design
DualFunction Ends:
Male NPT Thread: Screws into standard femalethreaded pipes, valves, or equipment.
Smooth Hose Shank: Barbfree surface for secure hose + clamp attachment.
No Hex Nut: Streamlined body prevents snagging in tight spaces.
Material Versatility:
| Material | Best For |
| Carbon Steel | Cost-effective plumbing, compressed air, oil/gas |
| 304 Stainless | Chemical/water systems, moderate corrosion resistance |
| 316 Stainless | Food processing, marine, high-corrosion environments |
Critical Specifications:
Sizes: 1/4″ to 12″ (Standard) • Customizable
Thread: NPT (National Pipe Taper) or BSPT
Pressure: ❌ Not for steam systems • Varies by material/clamp
1/2″ Dimensions: Length (A): 3.125″ • Thread OD (C): 0.645″
Why Choose a King Nipple?
- Simplified Connections
Replaces multiple fittings – one solution for pipetohose transitions.
- SpaceSaving Design
Hexless body fits flush in cramped areas (e.g., machinery, irrigation).
- Material Flexibility
Optimize cost (carbon steel) or corrosion resistance (stainless steel).
- LeakProof Performance
Precision threads + clampsecured hose ensure reliable seals.
Applications
| Applications | |
| Carbon Steel | Stainless Steel (304/316) |
| – Compressed air lines | – Chemical transfer |
| – Fuel/oil pipelines | – Food/pharma processing (316 only) |
| – Low-pressure hydraulics | – Marine/offshore equipment |
| – General construction | – Water treatment plants |
| ! Never Use For: Steam systems, thermal shock, or gas >150 PSI. | |
⚠️ Never Use For: Steam systems, thermal shock, or gas >150 PSI.
Installation Guide
- Threaded End: Apply Teflon tape → screw into female NPT or BSPT port.
- Hose End: Slide hose over shank → secure with two clamps.
