Iron Chrome Plated C-Type Quick Connector Quick Disconnect Air Hose Fitting

P-series (PF, PH, PM, PP) are plugs — the male half that inserts into a socket. S-series (SF, SH, SM, SP) are sockets — the female half that receives the plug. A complete coupling requires one matching plug and one socket of the same size code (e.g., PF20 mates with SF20).

The size code corresponds to the nominal port diameter: 20 ≈ 1/4" (6.5 mm), 30 ≈ 3/8" (9.5 mm), and 40 ≈ 1/2" (12.7 mm). Match the size code to your existing air hose inner diameter or tool inlet port size. When in doubt, check the markings on your current fittings or measure the hose bore.

The letter indicates the thread or port style of the fitting's connection end — for example, F typically denotes a female thread port, H a hose barb, M a male thread, and P a push-fit or panel-mount style. Confirm the specific thread standard (NPT, BSP, etc.) for your application by contacting us before ordering if you are unsure.

These fittings follow the standard C-type (industrial interchange) profile, which is widely compatible with C-type couplings from major brands. However, dimensional tolerances can vary between manufacturers. We recommend verifying fit with a test piece if mixing brands in a critical application.

The chrome plating creates a hard, smooth barrier over the iron body that slows oxidation when exposed to moisture in compressed air lines. It also reduces surface friction at the O-ring sealing zone, which helps maintain an airtight connection and extends the life of the internal seals over repeated use cycles.

Yes, C-type quick connectors are generally compatible with both dry and oil-lubricated compressed air systems. Ensure the internal O-rings are rated for oil exposure; if you notice seal degradation over time, replace the O-rings with oil-resistant equivalents suited to your compressor's lubricant type.

One complete coupling requires one plug (P-series) and one socket (S-series) of the same size code. If you need to outfit multiple drop lines, order the corresponding quantity of each. The 3-piece and 5-piece packs are cost-effective for stocking spares or setting up several workstations at once.