This end cap is designed with a female threaded connection. Connection 1 has Rp 1 inch threads. It is an end cap, so it has no output port. It is made out of cast iron (malleable) and is galvanic/electrolytic zinc plated for surface protection. At 20 °C (68 °F), it can handle a maximum pressure of 25 bar (363 psi).
FL1-F series
The FL1-F series consists of fittings with 1 female threaded connection port, so they are end caps. G, Rp, and NPT threads with a size range of 1/8 inch to 3 inches. Made out of brass, steel, stainless steel, or cast iron. They are designed to stop the media flow.
Specifications
Thread : 1 inch
Connection type : Inner thread cylindrical BSPT-Rp
Fitting features : Capped
Material : Cast iron
Max pressure at 20 °C (bar) : 25
Material connection 1 : Cast iron
Material quality connection 1 : Malleable cast iron
Surface protection connection 1 : Galvanic/electrolytic zinc plated
With drain : No
![Rp 1'' Zinc plated Cast iron End cap 25 Bar [5 Pieces]](https://www.coolgrittools.com/wp-content/uploads/2026/06/fl1-f-iz-100r-e_02.6b69c6f4.webp)




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