Flanged Spigot Pipe
Keylion® Flanged Spigot Pipe is an essential ductile iron fitting designed to bridge the gap between flanged equipment and socketed pipe sections. Also frequently referred to as a flange spigot or DI adapter, this component plays a vital role in municipal water distribution and sewage treatment systems. It operates on a simple principle: one end features a standard flange for bolting to valves, while the other is a smooth spigot that slides into a bell-end pipe or fitting. You will find these widely used in pump rooms, fire-fighting setups, and irrigation projects where rigid equipment must meet flexible underground piping.
Technical Specifications
| Product Name | Flanged Spigot Pipe |
| Brand | Keylion® |
| Flange Standard | ANSI/ASME/GB/BS/DIN |
| Diameter Range | DN50-DN2000(Custom sizes available) |
| Material | Ductile Iron |
| Pressure Rating | PN10/PN16/PN25 |
| Application Medium | Potable Water, Sewage, Neutral Liquids |
| Spigot Length | Standard lengths or customized per drawing |
FAQ
Q: How does a Flanged Spigot Pipe differ from a standard Flange Adapter?
A: A flange adapter is a mechanical coupling that clamps onto plain‑end pipe with bolts. The flanged spigot pipe is one solid ductile iron casting. Its spigot slips straight into bell‑end pipe sockets. Buried underground, this rigid joint holds tight against leaks across decades of service.
Q: Can I use these fittings for drinking water lines without safety concerns?
A: Yes. These fittings come with non‑toxic blue fusion‑bonded epoxy (FBE) coating that meets international potable‑water health standards. Applied at high temperature, the coating bonds firmly to ductile iron. You won't face risks of inner lining peeling or rust getting into drinking‑water supply.
Q: Does the spigot end require any special preparation before installation?
A: Not much extra work, but small field details can ruin the joint. Keylion® Flanged Spigot Pipe ships with factory‑cut chamfer at the tip. This bevel helps push past socket rubber gaskets without tearing them. On‑site, wipe off all grit and dirt from the spigot surface. Use only dedicated pipe lubricant. Dish soap is a bad substitute; it slowly erodes gasket material.
Q: Why should I pay more for Ductile Iron instead of using cheaper Grey Cast Iron?
A: Grey cast iron is too brittle for today's water infrastructure. Ground shifting or water hammer pressure shocks can snap grey iron parts right off. Ductile iron contains spheroidal graphite. Instead of breaking, it flexes slightly under stress. For high‑pressure networks and deeply buried pipelines, long‑term operational safety beats the small cost saving of grey iron.
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