Milton S-505 Analog Tyre Inflator Gauge — 15" Hose, Single-Head Chuck, 10–60 PSI, Magnifying Dial

Milton S-505 is a rugged analog tire inflator with a 15-inch hose and single-head air chuck that reads 10–60 PSI for precise manual tire inflation.

This handheld inflator gauge combines heavy-duty construction with serviceable parts so you can measure and add air reliably whether you’re at home, on the road, or in a shop. The S-505’s full-swivel chuck and magnifying lens on the window make it easier to read and attach to hard-to-reach valves such as those on motorcycles and utility trailers. Milton’s replacement cartridge design also reduces downtime and extends instrument life.

How accurate and easy-to-read is the Milton S-505?

The S-505 is performance-tested and factory-calibrated to give repeatable readings across its 10–60 PSI range, with 2-psi increments for fine control. A magnifying glass window improves dial legibility and the clear scale helps avoid misreads during inflation.

• Range: 10–60 PSI with 2-psi graduations.
• Factory calibration for consistent readings.
• Magnifying lens on dial for clearer viewing.
• Replacement gauge cartridge available to maintain accuracy.

Can this inflator reach tight or awkward tire valves?

Yes — the S-505 is built with a full-swivel single-head chuck and a flexible 15-inch hose specifically to make connections easier on motorcycles, ATVs, and other hard-to-access valves. The single-head design provides a secure seal for smaller valve stems.

• Single-head air chuck ideal for motorcycles and tight stems.
• 15" hose for extended reach from compressor or air source.
• Full-swivel chuck prevents hose kinking while connected.
• Threaded 1/4" NPT inlet for common compressor fittings.

What maintenance or replacement parts are available?

>The S-505 was designed for serviceability: both the gauge cartridge and the valve cartridge can be replaced, extending the tool’s usable life rather than replacing the whole unit. Milton supplies specific replacement parts and hoses for the 500-series window inflator family.

• Replaceable gauge cartridge: Milton #507.
• Replaceable valve cartridge: Milton #512.
• Replacement hose whip: Milton #508; replacement chuck: Milton #P500-44.
• Standard air chuck threads: 7/16"-27 UNS for compatibility details.

How versatile is the S-505 for different vehicles and tasks?

The S-505 covers a broad set of everyday inflation needs from bicycles and golf carts to cars, trucks, and trailers. While great for single-valve applications, note that dual-head or large-bore gauges are recommended for duallys and extra-large truck tires.

• Suitable for cars, motorcycles, ATVs, bicycles, lawn tractors, trailers, and more.
• Not optimized for dual-wheel duallys — consider a large-bore dual-head gauge in that case.
• Threaded 3/8-24 and 1/4" NPT inlet options for workshop connectors.
• Durable construction for heavy use in garages and shops.

Who is this for? The Milton S-505 is aimed at motorists, home mechanics, motorcycle owners, and small shops that need a dependable, serviceable analog inflator for routine tire maintenance. If you want an easy-to-read, repairable tool that reaches tight valve stems and fits common air fittings, the S-505 is a practical, long-lasting choice. For very large or dual tires, pair it with a large-bore or dual-head gauge instead.

FAQ

Q: What PSI range does the Milton S-505 measure?

A: The S-505 reads 10–60 PSI with 2-psi graduations for precise manual inflation.

Q: Can I replace parts on the S-505?

A: Yes — both the gauge and valve cartridges are replaceable; Milton supplies specific replacement part numbers.