1/2" Female-Female Ball Valve with flat handle and drain EZF29263 Ezfitt

FAQ 1/2" Female-Female Ball Valve with flat handle and drain EZF29263

Is this 1/2" FF valve compatible with BSP or NPT threading?

The designation does not specify the thread standard. In European industrial distribution, 1/2" on a FF valve most often refers to parallel BSP (ISO 228-1) or tapered (EN 10226-1) gas threads, though both coexist depending on the equipment's origin. Check the marking on the valve body and your network standard before installation: BSP and NPT are mechanically incompatible, and any forced connection will cause a leak.

What is the purpose of the drain function on this valve, and when should it be used?

The drain port allows for the evacuation of residual fluid trapped downstream of the valve after closure, without dismantling the entire assembly. This is useful during maintenance on downstream components, to prevent freezing risks in a decommissioned circuit, or to depressurise a section before works. Before opening the drain, ensure the valve is closed and wear the appropriate PPE for the fluid present.

What installation precautions should be taken for a FF (female-female) valve between two male components?

The FF connection means the valve fits directly between two male ends without an intermediate adapter; allow for its axial dimension when calculating the piping network length. Apply a sealant compatible with the fluid (PTFE, anaerobic paste) to the incoming male threads, never inside the valve body. Tighten gradually without excessive force to avoid distorting the body or damaging the ball seal.